Traxxas Slash 4x4 Ultimate 68077 User manual

owner’s manual
MODEL 68077
MODEL 6809L

2 •SLASH 4X4 ULTIMATE
INTRODUCTION
This manual contains the instructions you will need to operate and
maintain your model so that you can enjoy it for years to come. We want
you to feel confident that you own one of the best-performing models
in the market and that it is backed by a team of professionals who aim to
provide the highest level of factory support possible. Traxxas models are
about experiencing total performance and satisfaction, not just with your
model, but also with the company that stands behind it.
We know you’re excited about getting your new model on the road, but
it’s very important that you take some time to read through the Owner’s
Manual. This manual contains all the necessary set-up and operating
procedures that will allow you to unlock the performance potential that
Traxxas engineers designed into your model. Also be sure to read and
follow the precautions and warnings in this manual and on any labels or
tags attached to your model. They are there to educate you on how to
operate your model safely and also get maximum life and performance
from your model.
Even if you are an experienced R/C enthusiast, it’s important to read
and follow the procedures in this manual.
Thank you again for going with Traxxas. We work hard every day to
ensure you receive the highest level of customer satisfaction possible.
We truly want you to enjoy your new model!
Quick Start
This manual is designed with a Quick Start path
that outlines the necessary procedures to get
your model up and running in the shortest time possible. If you are an
experienced R/C enthusiast you will find it helpful and fast. Be sure and
read through the rest of the manual to learn about important safety,
maintenance, and adjustment procedures. Turn to page 8 to begin.
BEFORE YOU PROCEED
Carefully read and follow all instructions in this and any accompanying
materials to prevent serious damage to your model. Failure to follow
these instructions will be considered abuse and/or neglect.
Before running your model, look over this entire manual and examine
the model carefully. If for some reason you decide it is not what you
wanted, then do not continue any further. Your hobby dealer absolutely
cannot accept a model for return or exchange after it has been run.
SUPPORT
If you have any questions about your model or its
operation, call the Traxxas Technical Support Line toll-free
at: 1-888-TRAXXAS (1-888-872-9927)*
Technical support is available Monday through Friday
from 8:30am to 9:00pm central time. Technical assistance
is also available at Traxxas.com/support. You may also e-mail customer
support with your question at [email protected]. Join thousands of
registered members in our online community at Traxxas.com.
Traxxas offers a full-service, on-site repair facility to handle any of your
Traxxas service needs. Maintenance and replacement parts may be
purchased directly from Traxxas by phone or online at BuyTraxxas.com.
You can save time, along with shipping and handling costs, by purchasing
replacement parts from your local dealer.
Do not hesitate to contact us with any of your product support needs.
We want you to be thoroughly satisfied with your new model!
*Toll-free support is available to U.S. residents only.
2BEFORE YOU
PROCEED
4SAFETY
PRECAUTIONS
6ANATOMY OF THE
SLASH 4x4 ULTIMATE
7TOOLS, SUPPLIES, AND
REQUIRED EQUIPMENT
8QUICK START:
GETTING UP TO SPEED
9TRAXXAS TQ
i RADIO
AND VELINEON
BRUSHLESS POWER
SYSTEM
17 ADJUSTING THE
ELECTRONIC SPEED
CONTROL
19 DRIVING YOUR MODEL
22 BASIC TUNING
ADJUSTMENTS
24 MAINTAINING
YOUR MODEL
26 ADVANCED TUNING
ADJUSTMENTS
32 TQ
i ADVANCED
TUNING GUIDE
TABLE OF CONTENTS
WARNINGS, HELPFUL HINTS, & CROSS-REFERENCES
Throughout this manual, you’ll notice warnings and helpful hints
identified by the icons below. Be sure to read them!
An important warning about personal safety or avoiding
damage to your model and related components.
Special advice from Traxxas to make things easier
and more fun.
Refers you to a page with a related topic.
REGISTERING YOUR MODEL
In order to serve you better as our customer, please register your
product within 10 days of your purchase online at Traxxas.com/register.
Traxxas.com/register

WHY IT’S THE ULTIMATE
The next-generation Slash 4X4 Ultimate represents Ready-To-Race® performance at the
highest level. The Slash 4X4 Ultimate pushes the performance envelope; its new Low-CG
chassis delivers superior handling and maximum corner speed and new 13mm bore GTR
hard-anodized aluminum shocks provide consistent damping and smooth suspension
action lap-after-lap. The result is lightning-fast steering response and smooth, consistent
damping that raises the bar even higher on Slash 4X4 handling and precise control.
The TQi Radio System with Docking Base and Slash 4X4 Ultimate’s factory-installed
telemetry enable real-time data capture and set the standard for tuning ease and versatility.
To truly make this the Ultimate Slash 4X4, the specs are completed with nearly every
factory option available, from aluminum suspension components to a sealed, silicone filled
differential. Simply put, it’s the best of the best.
Front and Rear Sway Bars
68077: Series 4 4200mAh NiMH Battery
6809L: 2-cell 5000mAh LiPo battery
SCT Tires with
S1 Racing Compound
(Style varies by model)
Optional Included
Center Differential
Traxxas
6200 Traxxas Way
McKinney, TX 75070
Phone: [phone]
Toll-free 1-888-TRAXXAS
Internet:
Traxxas.com
E-mail:
[email protected]
Entire contents ©2014 Traxxas. Traxxas, Ready-To-Race, Ready-To-Win, Slash, Velineon, and ProGraphix are trademarks or registered trademarks of
Traxxas. Other brand names and marks are the property of their respective holders and are used only for purposes of identification. No part of this
manual may be reproduced or distributed in print or electronic media without the express written permission of Traxxas. Specifications are subject to
change without notice.
Hard-Anodized PTFE
Coated GTR Shocks
Aluminum Rear Hub Carriers
Aluminum C-hubs and Steering Blocks Aluminum Wheel nuts
FCC Compliance
This device contains a module that complies with the limits for a Class B digital device as described in part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
The limits for a Class B digital device are designed to provide reasonable protection against harmful interference in residential settings. This product generates, uses and can radiate radio frequency energy, and, if not operated in accordance with the instructions, may cause
harmful interference to radio communications. The user is cautioned that changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Canada, Industry Canada (IC)
This Class B digital apparatus complies with Canadian ICES-003 and RSS-210. This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the following two conditions: This device may not cause interference, and This device must accept
any interference, including interference that may cause undesired operation of the device.
Radio Frequency (RF) Exposure Statement
This equipment complies with radio frequency exposure limits set forth by FCC and Industry Canada for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body or
bystanders and must not be co-located or operating in conjunction with any other antenna or transmitter.

4 •SLASH 4X4 ULTIMATE
This model is not intended
for use by children under
14 years of age without the
supervision of a responsible
and knowledgeable adult.
Gearing and battery choice
(see LiPo Batteries, right)
affect the skill level of the
model. See chart below.
All instructions and
precautions outlined in this
manual should be strictly
followed to ensure safe
operation of your model.
SAFETY PRECAUTIONS
All of us at Traxxas want you to safely enjoy your new model. Operate your
model sensibly and with care, and it will be exciting, safe, and fun for you and
those around you. Failure to operate your model in a safe and responsible
manner may result in property damage and serious injury. The precautions
outlined in this manual should be strictly followed to help ensure safe
operation. You alone must see that the instructions are followed and the
precautions are adhered to.
Important Points to Remember
• Your model is not intended for use on public roads or congested areas where
its operation can conflict with or disrupt pedestrian or vehicular traffic.
• Never, under any circumstances, operate the model in crowds of people. Your
model is very fast and could cause injury if allowed to collide with anyone.
• Because your model is controlled by radio, it is subject to radio interference
from many sources that are beyond your control. Since radio interference can
cause momentary losses of radio control, always allow a safety margin in all
directions around the model in order to prevent collisions.
• The motor, battery, and speed control can become hot during use. Be careful
to avoid getting burned.
• Don’t operate your model at night, or anytime your line of sight to the model
may be obstructed or impaired in any way.
• Most importantly, use good common sense at all times.
Speed Control
Your model’s electronic speed control (ESC) is an extremely powerful
electronic device capable of delivering high current. Please closely follow these
precautions to prevent damage to the speed control or other components.
• Disconnect the Battery: Always disconnect the battery or batteries from the
speed control when not in use.
• Insulate the Wires: Always insulate exposed wiring with heat shrink tubing to
prevent short circuits.
• Water and Electronics Do Not Mix: The speed control is waterproof for use
in mud, snow, puddles, and other wet conditions. Make certain the other
components of your model are waterproof or have sufficient water resistance
before driving in wet conditions.
• Transmitter on First: Switch on your transmitter first before switching on the
speed control to prevent runaways and erratic performance.
• Don’t Get Burned: The ESC and motor can become extremely hot during use,
so be careful not to touch them until they cool. Supply adequate airflow for
cooling.
• Use the Factory-Installed Stock Connectors: Do not change the battery and
motor connectors. Improper wiring can cause fire or damage to the ESC.
Please note that modified speed controls can be subject to a rewiring fee
when returned for service.
• No Reverse Voltage: The ESC is not protected against reverse polarity voltage.
• Always adhere to the minimum and maximum limitations of the speed
control as stated in the specifications table on page 17. If your ESC operates on
two batteries, do not mix battery types and capacities. Use the same voltage
and capacity for both batteries. Using mismatched battery packs could
damage the batteries and electronic speed control.
LiPo Batteries
Lithium Polymer (LiPo) batteries are becoming popular for use in R/C models
due to their compact size, high energy density, and high-current output;
however, these types of batteries require special care and handling procedures
for long life and safe operation. WARNING: LiPo batteries are intended
only for advanced users that are educated on the risks associated with
LiPo battery use. Traxxas does not recommend that anyone under the
age of 14 use or handle LiPo battery packs without the supervision of a
knowledgeable and responsible adult.
Your model is able to use LiPo batteries. LiPo batteries have a minimum safe
discharge voltage threshold that should not be exceeded. The electronic speed
control is equipped with built-in Low-Voltage Detection, which alerts the
driver when LiPo batteries have reached their minimum voltage (discharge)
threshold. It is the driver’s responsibility to stop immediately to prevent the
battery pack from being discharged below its safe minimum threshold.
Gearing: Stock Pinion
Battery: 7-Cell NiMH
Voltage*: 8.4V
mAh: 3000+mAh
Gearing: Opt. Pinion
Battery: 7-Cell NiMH
Voltage*: 8.4V
mAh: 3000+mAh
Gearing: Stock Pinion
Battery: 3S 20C LiPo
Voltage*: 11.1V
mAh: 5000+ mAh
Gearing: Opt. Gearing
Battery: 3S 20C LiPo
Voltage*: 11.1V
mAh: 5000+ mAh
*Nominal
1
See the gearing chart on
page 26 for more information.
WARNING! CAUTION! DANGER!
FIRE HAZARD! Charging and discharging batteries has the potential for
fire, explosion, serious injury, and property damage if not performed per the
instructions. In addition, Lithium Polymer (LiPo) batteries pose a SEVERE risk of
fire if not properly handled per the instructions. Before use, read and follow all
manufacturer’s instructions, warnings, and precautions. Never allow children under 14 years old
to charge or use LiPo batteries without the supervision of a responsible, knowledgeable adult.
• While charging or discharging, ALWAYS place the battery (all types of batteries) in a fire
retardant/fire proof container and on a non-flammable surface such as concrete.
• ALWAYS charge batteries in a well-ventilated area.
• REMOVE flammable items and combustible materials from the charging area.
• ONLY use a LiPo balance charger with a balance adapter to charge LiPo batteries.
• If any battery or cell is damaged in any way, DO NOT charge, discharge, or use the battery.
• BEFORE you charge, ALWAYS confirm that the charger settings exactly match the battery
type (chemistry), specification, and configuration to be charged.
• DO NOT exceed the maximum manufacturer recommended charge rate.
• DO NOT disassemble, crush, short circuit, or expose the batteries to flame or other sources
of ignition.
• NEVER leave batteries unattended while charging.

SLASH 4X4 ULTIMATE •5
Low-Voltage Detection on the speed control is just one part of a
comprehensive plan for safe LiPo battery use. It is critical for you,
the user, to follow all other instructions supplied by the battery
manufacturer and the charger manufacturer for proper charging,
use, and storage of LiPo batteries. Make sure you understand
how to use your LiPo batteries. Be aware that Traxxas shall not
be liable for any special, indirect, incidental, or consequential
damages arising out of the installation and/or use of LiPo batteries
in Traxxas models. If you have questions about LiPo battery usage,
please consult with your local hobby dealer or contact the battery
manufacturer. As a reminder, all batteries should be recycled at the
end of their useful life.
TERMS OF USE - The buyer assumes all risk associated with using this
product. Traxxas, its affiliates, manufacturers, distributors, and retail
partners cannot control the use, application, charging, or installation
of this product and shall not be held responsible for any accident,
injury to persons, or damage to property resulting from the use of
this product.
After reading all, if you do not agree with these terms and conditions
and are not prepared to accept complete liability for the use of this
product, return this product immediately in new/unused condition
to your place of purchase. Your retailer absolutely cannot accept
product for return or exchange if it has been used in any way.
If you have any questions, call Traxxas Customer Support at
1-888-TRAXXAS (1-888-872-9927). Outside the US, call +1-972-265-
8000 or e-mail [email protected].
Important Warnings for users of Lithium Polymer (LiPo)
batteries: Lithium Polymer (LiPo) batteries are significantly
more volatile than other rechargeable batteries.
ONLY use a Lithium Polymer (LiPo) balance charger with a balance
adapter to charge LiPo batteries, such as the Traxxas EZ-Peak Plus
Charger, part #2933, or the 2-Cell/3-Cell LiPo Balance Charger.
Never use NiMH or NiCad-type chargers or charge modes to charge
LiPo batteries. The use of a NiMH or NiCad charger or charge mode
will damage the batteries and may cause fire and personal injury.
Never charge LiPo battery packs in series or parallel with this
charger. Charging packs in series or parallel may result in improper
charger cell recognition and an improper charging rate that may
lead to overcharging, cell imbalance, cell damage, and fire.
• ALWAYS inspect your LiPo batteries carefully before charging.
Look for any loose leads or connectors, damaged wire insulation,
damaged cell packaging, impact damage, fluid leaks, swelling (a
sign of internal damage), cell deformity, missing labels, or any other
damage or irregularity. If any of the above conditions are observed,
do not charge or use the battery pack.
• Do not store or charge LiPo batteries with or around other batteries
or battery packs of any type, including other LiPos.
• Store and transport your LiPo batteries in a cool, dry place. Do not
store in direct sunlight. Do not allow the storage temperature to
exceed 140°F or 60°C or the cells may be damaged and risk of fire
created.
• DO NOT disassemble LiPo batteries or cells.
• DO NOT attempt to build your own LiPo battery pack from loose
cells.
• ALWAYS proceed with caution and use good common sense at all
times.
Charging and Handling Precautions/Warnings
• ALWAYS proceed with caution and use good common sense at all
times.
• Children require adult supervision while using this charger.
• DO NOT let any exposed battery contacts or wires touch each other.
This will cause the battery to short circuit and create the risk of fire.
• While charging, ALWAYS place the battery (all types of batteries) in
a fire retardant/fire proof container and on a non-flammable surface
such as concrete.
• NEVER charge batteries on wood, cloth, carpet, or on any other
flammable material.
• ALWAYS charge batteries in a well-ventilated area.
• REMOVE flammable items and combustible materials from the
charging area.
• DO NOT operate the charger in a cluttered space or place objects on
top of the charger or battery.
• If any battery or battery cell is damaged in any way, DO NOT charge,
discharge, or use the battery.
• Keep a Class D fire extinguisher nearby in case of fire.
• BEFORE you charge, ALWAYS confirm that the charger settings
exactly match the type (chemistry), specification, and configuration
of the battery to be charged.
• DO NOT use the 2-3 cell LiPo charger, part #2935, to charge NiMH
batteries.
• DO NOT exceed the battery manufacturer’s maximum
recommended charge rate.
• DO NOT disassemble, crush, short circuit, or expose the batteries or
cells to flame or any other source of ignition.
• If a battery gets hot to the touch (temperature greater than
110°F/43°C) during the charging process, immediately disconnect
the battery from the charger and discontinue charging.
• DO NOT leave the charger and battery unattended while charging,
discharging, or anytime the charger is ON with a battery connected.
If there are any signs of a malfunction, unplug the power source
and/or stop the charging process immediately.
• ALWAYS unplug the charger from the wall outlet and disconnect
the battery when not in use.
• DO NOT operate the charger inside of an automobile.
• AVOID short-circuits by always connecting the charge cable to
the charger first and then to the battery to charge or discharge.
Remember to always reverse this procedure when disconnecting
the battery.
• NEVER connect more than one battery at a time to the charger.
• DO NOT disassemble the charger.
• REMOVE the battery from your model or device before charging.
• DO NOT expose the charger to water or moisture.
• ALWAYS store battery packs safely out of the reach of children and
pets.
• DO NOT charge batteries if you observe ANY of the following
conditions:
- Batteries that are fully charged or have been only slightly
discharged.
- Batteries that are hot (temperature greater than 110°F/43°C)
- Batteries that are not expressly stated by the manufacturer to be
suitable to accept the power output (voltage and amperage) the
charger delivers during the charging process.
- Batteries that are damaged or defective in any way. Examples of
damage or defects include, but are not limited to: batteries with
dented cells, damaged or frayed wires, loose connections, fluid
leaks, corrosion, plugged vents, swelling, cell deformity, impact
damage, missing labels, melted components, or any other signs of
damage.
- Battery packs that have been altered from original manufacturer
configuration.
- Non-rechargeable batteries (explosion hazard)
- Batteries that have an internal charge circuit or a protection circuit.
SAFETY PRECAUTIONS

Motor
(Velineon 3500)
Rear Hub
Carrier
Rear Bumper
Slipper Clutch
RPM Sensor Wire
Motor Temperature Sensor Battery Voltage Sensor Wire
Electronic Speed
Control (VXL-3s)
Battery Compartment
Nerf Bar
LED Light
Pipe
Battery Hold-Down
Battery
(LiPo battery standard on
Model 6809L only. 68077
includes Series 4 NiMH battery)
Receiver Box
Antenna
Mount
Front Suspension
Arm
Front Bumper
Steering
Servo
Shock
(Damper)
Turnbuckle (Toe Link)
Turnbuckle
(Front Camber Link)
Turnbuckle
(Rear Camber Link)
Rear Shock Tower
Traxxas High-Current
Connector
Rear Body Mount
Rear Sway Bar
Chassis
Steering Block
(Axle Carrier)
Caster Block
(C-Hub)
Front Body Mount
Front
Sway Bar
Front
Shock Tower
Drive
Shaft
Half Shaft
Rear Suspension Arm
Half Shaft
6 •SLASH 4x4 ULTIMATE
ANATOMY OF THE SLASH 4X4 ULTIMATE

SLASH 4X4 ULTIMATE •7
TOOLS, SUPPLIES, AND REQUIRED EQUIPMENT
Recommended Equipment
These items are not required
for the operation of your
model, but are a good idea to
include in any R/C toolbox:
• Safety glasses
• Traxxas Ultra Premium Tire
Glue, Part #6468 (CA glue)
• Hobby knife
• Side cutters and/or needle
nose pliers
• Philips screwdriver
• Soldering iron
For more information on
batteries, see Use the Right
Batteries on page 12.
Body clips and
body washers
Optional
pinion gear
Foam battery spacer
for use with
LiPo batteries
Suspension multi-tool Optional center
differential
Shock wrench
Your model comes with a set of specialty metric tools. You’ll need to purchase other items, available from your hobby dealer, to operate
and maintain your model.
2.0mm “L” wrench 1.5mm “L” wrench 4-way wrenchU-joint wrench
Supplied Tools and Equipment
Required Equipment #68077; #6809L
Battery charger*
LiPo battery*
Batteries packaged separately.
Ask your dealer for details.
#6809L#68077
*Battery and charger style are subject to change and may vary from images.
7-cell NiMH battery pack* NiMH battery charger*
2.5mm “L” wrench 8mm/4mm wrench

8 •SLASH 4X4 ULTIMATE
QUICK START: GETTING UP TO SPEED
The following guide is an overview of the procedures for getting your model running. Look for the Quick Start logo on the bottom
corners of Quick Start pages.
1. Read the safety precautions on page 4 6. Check servo operation • See page 15
For your own safety, understand where carelessness and misuse
could lead to personal injury and product damage.
Make sure the steering servo is working correctly.
2. Charge the battery pack • See pages 12 & 13 7. Range test the radio system • See page 15
Fully charge the included battery pack. Begin charging
your battery right away.
Follow this procedure to make sure your radio system works properly at
a distance and that there is no interference from outside sources.
3. Install batteries in the transmitter • See page 12 8. Detail your model • See sidebar, page 9
The transmitter requires 4 AA alkaline batteries (sold separately). Apply other decals if desired.
4. Install the battery pack in the model • See page 13 9. Drive your model • See page 19
Your model requires a fully charged battery pack. Driving tips and adjustments for your model.
5. Turn on the radio system • See page 14 10. Maintaining your model • See page 24
Make a habit of turning the transmitter on first and off last. Follow these critical steps to maintain the performance
of your model and keep it in excellent running condition.
The Quick Start Guide is
not intended to replace the
full operating instructions
available in this manual.
Please read this entire
manual for complete
instructions on the proper
use and maintenance of
your model.
Look for the Quick Start
logo at the bottom of
Quick Start pages.

SLASH 4X4 ULTIMATE •9
8
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
INTRODUCTION
Your model includes the latest Traxxas TQi 2.4GHz transmitter with
Traxxas Link™ Model Memory. The transmitter’s easy-to-use design
provides instant driving fun for new R/C enthusiasts, and also offers
a full compliment of pro-level tuning features for advanced users
– or anyone interested in experimenting with the performance of
their model. The steering and throttle channels feature adjustable
Exponential, End Points, and Sub-Trims. Steering and braking Dual
Rate are also available. Many of the next-level features are controlled
by the Multi-Function knob, which can be programmed to control
a variety functions. The detailed instructions (page 32) and Menu
Tree (page 35) included in this manual will help you understand and
operate the advanced functions of the new TQi radio system. For
additional information and how-to videos, visit Traxxas.com.
RADIO AND POWER SYSTEM TERMINOLOGY
Please take a moment to familiarize yourself with these radio and
power system terms. They will be used throughout this manual.
A detailed explanation of the advanced terminology and features of
your new radio system begins on page 32.
2.4GHz Spread Spectrum – This model is equipped with the latest
R/C technology. Unlike AM and FM systems that require frequency
crystals and are prone to frequency conflicts, the TQi system
automatically selects and locks onto an open frequency and offers
superior resistance to interference and “glitching.”
BEC (Battery Eliminator Circuit) - The BEC can either be in the
receiver or in the ESC. This circuit allows the receiver and servos
to be powered by the main battery pack in an electric model. This
eliminates the need to carry a separate pack of 4 AA batteries to
power the radio equipment.
Brushless Motor - A D/C brushless motor replaces the brushed motor’s
traditional commutator and brush arrangement with intelligent
electronics that energize the electromagnetic windings in sequence
to provide rotation. Opposite of a brushed motor, the brushless
motor has its windings (coils) on the perimeter of the motor can and
the magnets are mounted to the spinning rotor shaft.
Cogging - Cogging is a condition sometimes associated with
brushless motors. Typically it is a slight stutter noticed when
accelerating from a stop. It happens for a very short period as the
signals from the electronic speed control and the motor synch
with each other. The VXL-3s electronic speed control is optimized
to virtually eliminate cogging.
Current - Current is a measure of power flow through the
electronics, usually measured in amps. If you think of a wire as a
garden hose, current is a measure of how much water is flowing
through the hose.
ESC (Electronic Speed Control) - An electronic speed control is the
electronic motor control inside the model. The VXL-3s electronic
speed control uses advanced circuitry to provide precise, digital
proportional throttle control. Electronic speed controls use power
more efficiently than mechanical speed controls so that the
batteries run longer. An electronic speed control also has circuitry
that prevents loss of steering and throttle control as the batteries
lose their charge.
Frequency band - The radio frequency used by the transmitter to
send signals to your model. This model operates on the 2.4GHz
direct-sequence spread spectrum.
kV Rating - Brushless motors are often rated by their kV number. The
kV rating equals no-load motor rpm with 1 volt applied. The kV
increases as the number of wire turns in the motor decreases. As the
kV increases, the current draw through the electronics also increases.
The Velineon 3500 motor is a 3500 kV motor optimized for the best
speed and efficiency in lightweight 1/10 scale models.
LiPo - Abbreviation for Lithium Polymer. Rechargeable LiPo battery
packs are known for their special chemistry that allows extremely
high energy density and current handling in a compact size. These
are high-performance batteries that require special care and
handling. For advanced users only.
mAh – Abbreviation for milliamp hour. A measure of the capacity of
the battery pack. The higher the number, the longer the battery
will last between recharges.
Neutral position - The standing position that the servos seek when
the transmitter controls are at the neutral setting.
NiCad - Abbreviation for nickel-cadmium. The original rechargeable
hobby pack, NiCad batteries have very high current handling, high
capacity, and can last up to 1000 charging cycles. Good charging
procedures are required to reduce the possibility of developing a
“memory” effect and shortened run times.
Applying the Decals
The main decals for your
model have been applied at
the factory. Additional decals
are printed on self-adhesive
clear mylar and are die-cut for
easy removal. Use a hobby
knife to lift the corner of a decal
and lift it from the backing.
To apply the decals, place one
end down, hold the other end
up, and gradually smooth the
decal down with your finger
as you go. This will prevent air
bubbles. Placing both ends of
the decal down and then trying
to smooth it out will result in
air pockets. Look at the photos
on the box for typical decal
placement.

10 •SLASH 4X4 ULTIMATE
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
NiMH - Abbreviation for nickel-metal hydride. Rechargeable NiMH
batteries offer high current handling and much greater resistance
to the “memory” effect. NiMH batteries generally allow higher
capacity than NiCad batteries. They can last up to 500 charge
cycles. A peak charger designed for NiMH batteries is required for
optimal performance.
Receiver - The radio unit inside your model that receives signals from
the transmitter and relays them to the servos.
Resistance - In an electrical sense, resistance is a measure of how an
object resists or obstructs the flow of current through it. When flow
is constricted, energy is converted to heat and is lost. The Velineon
power system is optimized to reduce electrical resistance and the
resulting power-robbing heat.
Rotor - The rotor is the main shaft of the brushless motor. In a
brushless motor, the magnets are mounted to the rotor, and the
electromagnetic windings are built into the motor housing.
Sensored - Sensored refers to a type of brushless motor that
uses an internal sensor in the motor to communicate rotor position
information back to the electronic speed control. The VXL-3s electronic
speed control is able to use sensored motors when applications benefit
from them (such as some sanctioned racing classes).
Sensorless - Sensorless refers to a brushless motor that uses
advanced instructions from an electronic speed control to provide
smooth operation. Additional motor sensors and wiring are not
required. The VXL-3s electronic speed control is optimized for
smooth sensorless control.
Servo - Small motor unit in your model that operates the steering
mechanism.
Solder Tabs - Accessible, external contacts on the motor that allows
for easy wire replacement. The Velineon 3500 is equipped with
solder tabs.
Transmitter - The hand-held radio unit that sends throttle and
steering instructions to your model.
Trim - The fine-tuning adjustment of the neutral position of the
servos made by adjusting the throttle and steering trim knobs on
the face of the transmitter. Note: The Multi-Function knob must be
programmed to serve as a throttle trim adjustment.
Thermal Shutdown Protection - Temperature sensing electronics
used in the VXL-3s electronic speed control detect overloading and
overheating of the transistor circuitry. If excessive temperature is
detected, the unit automatically shuts down to prevent damage to
the electronics.
2-channel radio system - The TQi radio system, consisting of
the receiver, the transmitter, and the servos. The system uses
two channels: one to operate the throttle and one to operate
the steering.
Voltage - Voltage is a measure of the electrical potential difference
between two points, such as between the positive battery terminal
and ground. Using the analogy of the garden hose, while current is
the quantity of water flow in the hose, voltage corresponds to the
pressure that is forcing the water through the hose.
IMPORTANT RADIO SYSTEM PRECAUTIONS
• Do not kink the receiver’s antenna wire. Kinks in the antenna wire
will reduce range.
• DO NOT CUT any part of the receiver’s antenna wire. Cutting the
antenna will reduce range.
• Extend the antenna wire in the model as far as possible for
maximum range. It is not necessary to extend the antenna wire out
of the body, but wrapping or coiling the antenna wire should be
avoided.
• Do not allow the antenna wire to extend outside the body without
the protection of an antenna tube, or the antenna wire may get
cut or damaged, reducing range. It is recommended to keep the
wire inside the body (in the antenna tube) to prevent the chance
of damage.
To prevent loss of radio range
do not kink or cut the black wire,
do not bend or cut the metal tip,
and do not bend or cut the white
wire at the end of the metal tip.
Correct NoNo No

SLASH 4X4 ULTIMATE •11
ESC/Motor Wiring Diagram
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
Your model is equipped with the newest TQi 2.4GHz transmitter
with Traxxas Link™ Model Memory. The transmitter has two
channels for controlling your throttle and steering. The receiver
inside the model has 5 output channels. Your model is equipped
with one servo and an electronic speed control.
MODEL WIRING DIAGRAM
to Motor
LED
EZ-Set Button
(On/Off Button)
Heat Sink
VXL-3s ELECTRONIC SPEED CONTROL
Traxxas High-Current
Connector (Male)
to Battery
Receiver cable
(RX wire)
Cooling Fan
Connector
(for optional use)
TRANSMITTER AND RECEIVER
Steering
Trim
Multi-Function
Knob
Throttle
Trigger
Throttle Neutral
Adjust Steering Wheel
Power Switch Battery Compartment
Set Button
Menu Button
Red/Green Status LED
see page 30 for more info
Link
Button
LED
Sensor Expansion
Port**
Traxxas High-Current
Connector (Male)
to Battery
Brushless Motor
(see sidebar for proper
motor wiring)
Channel 1
Steering Servo
Telemetry
Voltage Wire
Telemetry
Temperature Wire
Channel 2
Electronic Speed Control
Cooling Fan
Connector
(for optional use)
RPM
Sensor
Antenna Motor Cap
V/T - Voltage/Temp Sensor
RPM - RPM Sensor
B AT T/
CH5 - Battery/Channel 5*
CH4 - Channel 4*
CH3 - Channel 3*
CH2 - Speed Control
CH1 - Steering Servo
CH1 - Steering Servo*
*Not used
** Accessory sensor port for use with the Telemetry Expander Module (see Traxxas.com and included materials for more information)

12 •SLASH 4X4 ULTIMATE
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
INSTALLING TRANSMITTER BATTERIES
Your TQi transmitter uses 4 AA batteries. The battery compartment is
located in the base of the transmitter.
1. Remove the battery
compartment door by
pressing the tab and sliding
the door open.
2. Install the batteries in the correct orientation as indicated in the
battery compartment.
3. Reinstall the battery door and snap it closed.
4. Turn on the transmitter and check the status
LED for a solid green light.
If the status LED flashes red, the transmitter
batteries may be weak, discharged, or possibly
installed incorrectly. Replace with new
batteries. The status LED does not indicate
the charge level of the battery pack installed
in the model. Refer to the Troubleshooting
section on page 30 for more information on the
transmitter status LED codes.
CHARGING THE NiMH BATTERY PACK
(Model #68077)
The included charger can be used to charge the provided battery pack.
The battery pack should be removed from the vehicle before charging. Do
not leave the battery unattended while charging. For faster charging, the
optional Traxxas EZ-Peak Plus (part #2933) can charge at 4 amps to reduce
charging time to only 45 minutes! It is normal for the battery to become
slightly warm as it nears full-charge, but the battery should never
become hot. If the battery becomes hot, disconnect it from the charger
immediately. NEVER charge a LiPo battery using a NiMH charger.
1. Plug the charger into the wall. The LED on the charger will glow green.
2. Connect the provided battery pack to the charger output cord. The
LED will glow red, indicating the battery is charging.
3. The battery should charge for approximately 8 ½ hours. The LED
will turn green when the battery is fully charged. Disconnect the
battery from the charger after charging.
2, 3
23
1
Using Other Batteries
Your model is equipped with a state of the art, high-performance power system.
It is designed to be able to flow large amounts of power with the least amount
of restriction. The benefits are drastically increased speed and acceleration; however,
this places extra demands on the battery and electrical system connections. For best
performance, your model requires the use of battery packs that have cells rated for
high discharge and use high-quality, low-resistance assembly techniques, such as the
included Traxxas Power Cell Battery Pack. Cheaply made battery packs do not retain their
performance characteristics after repeated uses in high-powered electric applications.
They will lose their punch and run time and may require frequent replacement. In
addition, poor-quality, high-resistance cell connectors could fail, requiring disassembly
and repair. The main goal is to reduce all sources of high resistance in the pack. This
includes the connector, the wire, and the bars attaching the cells together. High pack
resistance will create additional heat and rob you of the full power the cells are capable of
producing. We recommend using Traxxas Power Cell batteries for best performance. For
a complete list of the Power Cell packs for your model visit: Traxxas.com/powercell
Use the Right Batteries
Your transmitter uses AA
batteries. Use new alkaline
batteries. Do not use
rechargeable AA cells to
power the TQi transmitter,
as they will not provide
sufficient voltage for
optimum transmitter
performance.
Caution: Discontinue
running your model at the
first sign of weak batteries
(flashing red light on the
transmitter) to avoid losing
control.
If the status LED doesn’t light
green, check the polarity
of the batteries. Check
rechargeable batteries for
a full charge. If you see any
other flashing signal from the
LED, refer to the chart on page
30 to identify the code.
Disconnected Connected Charged

SLASH 4X4 ULTIMATE •13
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
4
CHARGING THE LiPo BATTERY PACK
(Model #6809L)
Before charging the provided 2-Cell LiPo battery, please read and
understand all safety precautions at the beginning of this manual.
The included charger can be used to charge the provided battery
pack. The supplied charger has an output rate of 800mAh (0.8 amps),
and may require up to seven hours to fully charge a battery. For faster
charging, the optional Traxxas EZ-Peak Plus (part #2933) can charge
at up to 6 amps to reduce charging time to an hour or less. WARNING:
ONLY use a charger designed for LiPo batteries. NEVER charge a
LiPo battery using a NiMH charger or a NiMH charging mode.
1. Insert the AC power cord into the charger.
2. Insert the AC cord into a wall socket (110-240V). All three LEDs
will light steady green and flash red to indicate the charger is ready
to charge.
3. Plug your Traxxas Power Cell 2-cell LiPo into the charger using
its balance plug. LEDs 1 and 2 will glow steady red, indicating
charging is underway. Do not leave battery and charger
unattended while charging.
4. This charger is not designed to charge two packs simultaneously.
If two batteries are plugged into the charger at the same time,
the charger will shut down. Unplug the charger and remove any
installed batteries to reset it.
5. When a cell is completely charged, its corresponding LED will glow
steady green. The 2-cell pack is fully charged when LEDs 1 and 2
are steady green.
Note: If the charger detects any of the battery’s cells are already fully
charged when you plug it into the charger, the LEDs corresponding to the
charged cells will not glow steady red and will default to steady green to
indicate those cells are fully charged.
INSTALLING THE BATTERY PACK
Install the battery pack with the battery
wires facing the rear of the model.
Insert the tabs of the battery hold-
down into the slots in the rear hold-
down retainer (A). Swing the battery
hold down towards the chassis and
snap (lock) the end into the front hold-
down retainer (B).
Using a Different Battery Configurati
on
The battery hold-down is capable of
accommodating either side-by-side
racing style packs or the more common
stick packs. The battery compartment
is configured for stick packs from the
factory. The number on each side of the
hold-down indicates the battery height
in millimeters that the hold-down can
accommodate. Note that one side is
labeled “25” and the other side is labeled “23”. The 25mm side is for
use with typical stick type battery packs. If you are using side-by-side
racing packs, simply flip the hold-down over to the 23mm side and
use it on the opposite side of the chassis. Note: For taller batteries,
an extended battery hold-down, part #7426X, is available (sold
separately). For shorter batteries (6-cell), use the included foam block
in the front of the battery compartment.
The following Traxxas High-
Current Connector packages
are available from your
hobby dealer. When using
adapters, be careful not to
exceed the current rating of
the Molex connector.
Battery Compartment Specs:
• 166mm (6.54") long
x 49.5mm (1.95") wide
• Height with stock strap:
23mm (.91") or 25mm (.94")
• Height with Part #7426X
options battery standoffs:
Up to 44mm (1.73")
Note: There is some flex with
the battery strap. It is possible
to fit slightly taller batteries in
the compartment.
Part #3060
Single Male/Female
Part #3080
2-Pack Female
Part #3070
2-Pack Male
Part #3061
Male Charge Adapter
Part #3062
Female Charge Adapter
25mm side: Standard NiMH stick pack setup
23mm side: Side-by-side NiMH pack setup

14 •SLASH 4X4 ULTIMATE
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
5
Remember, always turn the
TQi transmitter on first and
off last to avoid damage to
your model.
Automatic Fail-Safe
The TQi transmitter and
receiver are equipped with
an automatic fail-safe system
that does not require user
programming. In the event
of signal loss or interference,
the throttle will return to
neutral and the steering will
hold its last commanded
position. If Fail-Safe activates
while you are operating
your model, determine the
reason for signal loss and
resolve the problem before
operating your model again.
When rechargeable batteries
begin to lose their charge,
they will fade much faster
than alkaline dry cells. Stop
immediately at the first sign
of weak batteries. Never turn
the transmitter off when the
battery pack is plugged
in. The model could run out
of control.
RADIO SYSTEM RULES
• Always turn your TQi transmitter on first and off last. This procedure
will help to prevent your model from receiving stray signals from
another transmitter, or other source, and running out of control. Your
model has electronic fail-safes to prevent this type of malfunction,
but the first, best defense against a runaway model is to always turn
the transmitter on first and off last.
• Always use new or freshly charged batteries for the radio system.
Weak batteries will limit the radio signal between the receiver
and the transmitter. Loss of the radio signal can cause you to lose
control of your model.
•
In order for the transmitter and receiver to bind to one another,
the receiver in the model must be turned on within 20 seconds
of turning on the transmitter. The transmitter LED will flash fast
red, indicating a failure to link. If you miss it, simply turn off the
transmitter and start over.
• Always turn on the transmitter before plugging in the battery.
RADIO SYSTEM BASIC ADJUSTMENTS
Throttle Neutral Adjustment
The throttle neutral adjustment is located
on the transmitter face and controls the
forward/reverse travel of the throttle trigger.
Change the adjustment by pressing the
button and sliding it to the desired position.
There are two settings available:
50/50: Allows equal travel for both acceleration and reverse.
70/30: Allows more throttle travel (70%) and less reverse travel (30%).
Note: We strongly recommend to leave this control in its factory
location until you become familiar with all the adjustments and
capabilities of your model. To change the throttle neutral adjust
position, turn the transmitter off before adjusting the neutral
position. You will need to reprogram your electronic speed control
to recognize the 70/30 setting. Turn to VXL-3s Setup Programming
on page 17 for instructions.
Steering Trim
The electronic steering trim located on the
face of the transmitter adjusts the neutral
(center) point of the steering channel.
Multi-Function Knob
The Multi-Function knob can be
programmed to control a variety of functions.
From the factory, the Multi-Function knob
controls steering sensitivity, also known as exponential or “expo.”
When the knob is turned counterclockwise all the way to the left
(default position), expo is off and steering sensitivity will be linear
(the most commonly used setting). Turning the knob clockwise will
“add expo” and decrease the steering sensitivity in the initial range
of steering wheel travel left or right from center. For more detail on
steering exponential, refer to page 16.
RADIO SYSTEM CONTROLS
Forward
Neutral
Brake/Reverse
T
U
R
N
R
I
G
H
T
T
U
R
N
L
E
F
T
Always turn your
transmitter on first. Turn on the model.
12
Plug in the battery.
3

SLASH 4X4 ULTIMATE •15
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
6, 7
USING THE RADIO SYSTEM
The TQi Radio System has been pre-adjusted at the factory. The
adjustment should be checked before running the model, in case of
movement during shipping. Here’s how:
1. Turn the transmitter switch on. The status LED on the transmitter
should be solid green (not flashing).
2.
Elevate the model on a block or a stand so that all the tires are
off the ground. Make sure your hands are clear of the moving
parts of the model.
3. Plug the battery pack in the model into the speed control.
4. The on/off switch is integrated into the speed control. With the
transmitter on, press and release the EZ-Set button (.25 seconds).
The LED will shine RED (see note, below). This turns the model
on. To turn the VXL-3s off, press and hold the EZ-Set button
until the LED turns off (.5 seconds). Note: If the LED shines
green, Low-Voltage Detection is activated. This will cause erratic
performance from the included NiMH battery pack. The default
factory setting is for Low-Voltage Detection to be disabled
(LED shines red). Make sure to turn the low voltage detection
on when using LiPo batteries. Never use LiPo batteries while
Low-Voltage Detection is turned off. See page 17 for more
information.
5. Turn the steering wheel on the transmitter back and forth and
check for rapid operation of the steering servo. Also, check that
the steering mechanism is
not loose or binding. If the
steering operates slowly,
check for weak batteries.
6. When looking down at the
model, the front wheels
should be pointing straight ahead. If the wheels are turned
slightly to the left or right, slowly adjust the steering trim control
on the transmitter until they are pointing straight ahead.
7. Gently operate the throttle trigger to ensure that you have
forward and reverse operation, and that the motor stops when
the throttle trigger is at neutral. WARNING: Do not apply full
throttle in forward or reverse while the model is elevated.
8. Once adjustments are made, turn off the receiver on your model,
followed by the hand-held transmitter.
Range-Testing the Radio System
Before each running session with your model, you should range-test
your radio system to ensure that it operates properly.
1. Turn on the radio system and check its operation as described in
the previous section.
2. Have a friend hold the model. Make sure hands and clothing are
clear of the wheels and other moving parts on the model.
3. Walk away from the model with the transmitter until you reach
the farthest distance you plan to operate the model.
4. Operate the controls on the transmitter once again to be sure
that the model responds correctly.
5. Do not attempt to operate the model if there is any problem
with the radio system or any external interference with your
radio signal at your location.
Higher Speeds Require Greater Distance
The faster you drive your Slash 4X4 Ultimate, the more quickly
it will near the limit of radio range. At 60mph, a model can
cover 88 feet every second! It’s a thrill, but use caution to keep
your model in range. If you want to see your Slash 4X4 Ultimate
achieve its maximum speed, it is best to position yourself in
the middle of the truck’s running area, not the far end, so you
drive the truck towards and past your position. In addition to
maximizing the radio’s range, this technique will keep your
model closer to you, making it easier to see and control.
No matter how fast or far you drive your Slash 4X4 Ultimate,
always leave adequate space between you, the model, and others.
Never drive directly toward yourself or others.
TQi Binding Instructions
For proper operation, the transmitter and receiver must be
electronically “bound.” This has been done for you at the factory.
Should you ever need to re-bind the system or bind to an additional
transmitter or receiver, follow these instructions. Note: The receiver
must be connected to a 4.8-6.0v (nominal) power source for binding
and the transmitter and receiver must be within 5 feet of each other.
1. Press and hold the transmitter’s SET button as you switch the
transmitter on. The transmitter’s LED will flash red slowly.
Using Reverse: While driving,
push the throttle trigger
forward to apply brakes.
Once stopped, return the
throttle trigger to neutral.
Push the throttle trigger
forward again to engage
proportional reverse.

16 •SLASH 4X4 ULTIMATE
TRAXXAS TQ i RADIO & VELINEON POWER SYSTEM
2. Press and hold the receiver’s LINK button as you switch on the
speed control by pressing the EZ-Set button.
3. When the transmitter and receiver’s LEDs turn solid green, the
system is bound and ready for use. Confirm that the steering and
throttle operate properly before driving your model.
Steering Sensitivity (Exponential)
The Multi-Function knob on the TQi transmitter has been
programmed to control Steering Sensitivity (also known as
exponential). The standard setting for Steering Sensitivity is
“normal (zero exponential),” with the dial full left in its range of
travel. This setting provides linear servo response: the steering
servo’s movement will correspond exactly with the input from
the transmitter’s steering wheel. Turning the knob clockwise from
center will result in “negative exponential” and decrease steering
sensitivity by making the servo less responsive near neutral, with
increasing sensitivity as the servo nears the limits of its travel range.
The farther you turn the knob, the more pronounced the change
in steering servo movement will be. The term “exponential” comes
from this effect; the servo’s travel changes exponentially relative
to the input from the steering wheel. The exponential effect is
indicated as a percentage—the greater the percentage, the greater
the effect. The illustrations below show how this works.
Normal Steering Sensitivity (0% exponential)
In this illustration, the steering servo’s travel (and with it, the steering
motion of the model’s front wheels) corresponds precisely with the
steering wheel. The ranges are exaggerated for illustrative purposes.
Decreased Steering Sensitivity (Negative Exponential)
By turning the Multi-Function knob clockwise, the steering sensitivity
of the model will be decreased. Note that a relatively large amount
of steering wheel travel results in a smaller amount of servo travel.
The farther you turn the knob, the more pronounced the effect
becomes. Decreased steering sensitivity may be helpful when driving
on low-traction surfaces, when driving at high speed, or on tracks
that favor sweeping turns where gentle steering inputs are required.
The ranges are exaggerated for illustrative purposes.
Experiment! Try varying degrees of exponential. It’s easy to go back
to “zero” if you don’t like the effect. There’s no wrong way to adjust
exponential. Any setting that makes you more comfortable with
your car’s handling is the “right setting.”
SETTING UP THE ANTENNA
The receiver antenna has been set up and
installed from the factory. The antenna is
secured by a 3x4mm set screw. To remove
the antenna tube, simply remove the set
screw with the included 1.5mm wrench.
When reinstalling the antenna, first slide
the antenna wire into the bottom of the
antenna tube until the white tip of the
antenna is at the top of the tube under
the black cap. Next insert the antenna
tube into the mount while making sure
that antenna wire is in slot in the antenna
mount, then install the set screw next to
the antenna tube. Use the supplied 1.5mm wrench to tighten the
screw just until the antenna tube is securely in place. Do not over
tighten.
Do not bend or kink the antenna wire! See the side bar for
more information. Do not shorten the antenna tube.
To prevent loss of radio
range do not kink or cut the
black wire, do not bend or
cut the metal tip, and do not
bend or cut the white wire at
the end of the metal tip.
Correct NoNo No
Turning Range
at Transmitter
Effective Turning
Range on Model
Antenna
Tip
Antenna
Tube
Antenna
Mount

TRAXXAS •17
ADJUSTING THE ELECTRONIC SPEED CONTROL
VXL-3s Specifications
Input voltage:
4.8-11.1V (4 to 9 cells
NiMH or 2S to 3S LiPo)
Supported Motors:
Brushless
Motor limit:
None
Continuous current:
200A
Peak current :
320A
BEC voltage:
6.0V DC
Transistor type:
MOSFET
Battery connector:
Traxxas High-Current
Connector
Motor connectors:
TRX 3.5mm bullet
connectors
Motor/Battery Wiring:
12-gauge Maxx® Cable
Thermal Protection:
2-stage thermal shutdown
See page 27 for advanced
VXL-3s features and setup.
VXL-3s Battery Settings (Low-Voltage Detection Setting)
The Velineon VXL-3s electronic speed control is equipped with built-in Low-Voltage
Detection. The Low-Voltage Detection circuitry constantly monitors the battery
voltage. When the battery voltage begins to reach the minimum recommended
discharge voltage threshold for LiPo battery packs, the VXL-3s will limit the power
output to 50% throttle. When the battery voltage attempts to fall below the
minimum threshold, the VXL-3s will shut down all motor output. The LED on the
speed control will slowly blink red, indicating a low-voltage shutdown. The VXL-3s
will stay in this mode until a fully charged battery is connected.
The VXL-3s speed control’s Low-Voltage Detection has been set up for best
performance with the batteries supplied with your model. If factory-equipped with
NiMH batteries, the speed control’s LED will glow red when it is turned on, indicating
Low-Voltage Detection is disabled. If factory-equipped with LiPo batteries, the LED
will glow green when it is turned on, indicating Low-Voltage Detection is activated.
Never use LiPo batteries while Low-Voltage Detection is disabled.
To verify the Low-Voltage Detection setting:
1. Turn on the transmitter (with the throttle at neutral).
2. Connect a fully charged battery pack to the VXL-3s.
3. Press and release the EZ-Set button to turn the VXL-3s on. If the LED is solid red,
then the Low-Voltage Detection is DISABLED (not safe to use LiPo batteries). If
the LED is solid green, then Low-Voltage Detection is ACTIVATED.
To activate Low-Voltage Detection (LiPo setting):
1. Make sure the LED on the VXL-3s is on and red.
2. Press and hold the EZ-Set button for ten seconds. The LED will
turn off and then light green. Also, a “rising” musical tone will be
emitted from the motor.
3. Low-Voltage Detection is now ACTIVATED.
To disable Low-Voltage Detection (NiMH setting):
1. Make sure the LED on the VXL-3s is on and green.
2. Press and hold the EZ-Set button for ten seconds. The LED will
turn off and then light red. Also, a “falling” musical tone will be
emitted from the motor.
3. Low-Voltage Detection is now DISABLED.
Transmitter Adjustments for the VXL-3s ESC
Before attempting to program your VXL-3s ESC, it is important to make sure that
your transmitter is properly adjusted (set back to the factory defaults). Otherwise,
you may not get the best performance from your speed control.
The transmitter should be adjusted as follows:
If the transmitter settings have been adjusted, reset them to the factory defaults.
1. Turn the transmitter off.
2. Hold both MENU and SET.
3. Turn the transmitter on.
4. Release MENU and SET. The transmitter LED will blink red.
5. Press SET to clear settings. The LED will turn solid green and the transmitter is
restored to default.
VXL-3s Setup Programming (Calibrating your ESC and transmitter)
Read through all of the programming steps before you begin. If
you get lost during programming or receive unexpected results,
simply unplug the battery, wait a few seconds, plug the battery
back in, and start over.
1. Connect a fully charged battery pack to the VXL-3s.
2. Turn on the transmitter (with the throttle at neutral).
3. Press and hold the EZ-Set button (A). The LED will first
turn green and then red. Release the EZ-Set button.
4. When the LED blinks RED ONCE, pull the throttle trigger
to the full throttle position and hold it there (B).
5. When the LED blinks RED TWICE, push the throttle
trigger to the full reverse and hold it there (C).
6. When the LED blinks GREEN ONCE, programming is
complete. The LED will then shine green or red (depending on
Low-Voltage Detection setting), indicating the VXL-3s is on and
at neutral (D).
VXL-3s Operation
To operate the speed control and test programming, place the vehicle on a stable
block or stand so that all of the drive wheels are off the ground. Disconnect motor
wires “A” and “C” (see page 11), this will ensure the motor does not drive the wheels
during testing. Do not test programming without disconnecting the motor wires.
Note that in steps 1-7 below, Low-Voltage Detection is DISABLED (factory default)
and the LED shines red. If Low-Voltage Detection is ACTIVATED, the LED will shine
green instead of red in steps 1-7 below. Never use LiPo batteries while Low-Voltage
Detection is disabled.
1. With the transmitter on, press and release the EZ-Set button. The LED will shine
red. This turns the VXL-3s on.
2. Apply forward throttle. The LED will turn off until full throttle power is reached.
At full throttle, the LED will illuminate red.
3. Move the trigger forward to apply the brakes. Note that braking control is fully
proportional. The LED will turn off until full braking power is reached. At full
brakes, the LED will illuminate red.
4. Return the throttle trigger to neutral. The LED will shine red.
5. Move the throttle trigger forward again to engage reverse (Profile #1).
The LED will turn off. Once full reverse power is reached, the LED
will illuminate red.
6. To stop, return the throttle trigger to neutral. Note that there is a programmed
delay when changing from reverse to forward. This prevents damage to the
transmission on high-traction surfaces.
7. To turn the VXL-3s off, press the EZ-Set button until the LED turns
off (.5 seconds).
Green then Red
A
Once Green
D
Once Red
B
Twice Red
C

18 •SLASH 4X4 ULTIMATE
ADJUSTING THE ELECTRONIC SPEED CONTROL
Patent-Pending Training
Mode (Profile #3) reduces
forward and reverse throttle
by 50%. Training Mode
is provided to reduce the
power output, allowing
beginning drivers to better
control the model. As driving
skills improve, simply change
to Sport or Race Mode for
full-power operation.
Tip For Fast Mode Changes
The VXL-3s is set to Profile 1
(Sport Mode) as the default.
To quickly change to Profile 3
(Training Mode), with the
transmitter on, press and
hold the SET button until the
light blinks red three times
and then release.
For full power, quickly change
back to Profile 1 (Sport Mode)
by pressing and holding the
SET button until the light
blinks red one time and
then releasing.
The VXL-3s has built-in
programming that prevents
accidental activation of
reverse while in forward
motion and vice-versa. You
must come to a complete
stop, release the throttle
trigger, then apply opposite
throttle to engage the motor
in the desired direction.
VXL-3s Profile Selection
The speed control is factory set to Profile #1 (100% forward, brakes, and reverse).
To disable reverse (Profile #2) or to allow 50% forward and 50% reverse (Profile
#3), follow the steps below. The speed control should be connected to the
receiver and battery, and the transmitter should be
adjusted as described previously. The profiles are selected by entering the
programming mode.
Profile Description
Profile #1 (Sport Mode): 100% Forward, 100% Brakes, 100% Reverse
Profile #2 (Race Mode): 100% Forward, 100% Brakes, No Reverse
Profile #3 (Training Mode): 50% Forward, 100% Brakes, 50% Reverse
Selecting Sport Mode (Profile #1: 100% Forward, 100% Brakes, 100% Reverse)
1. Connect a fully charged battery pack to
the VXL-3s and turn on your transmitter.
2. With the VXL-3s off, press and hold
the EZ-Set button until the LED turns solid green,
then solid red and then begins blinking red
(indicating the Profile numbers).
3. When the LED blinks red once, release
the EZ-Set button.
4. The LED will blink and then turn solid green
(Low-Voltage Detection ACTIVE) or red (Low-
Voltage Detection DISABLED). The model is ready to drive.
Selecting Race Mode (Profile #2: 100% Forward, 100% Brakes, No Reverse)
1. Connect a fully charged battery pack to
the VXL-3s and turn on your transmitter.
2. With the VXL-3s off, press and hold
the EZ-Set button until the LED turns solid green,
then solid red and then begins blinking red
(indicating the Profile numbers).
3. When the LED blinks red twice, release
the EZ-Set button.
4. The LED will blink and then turn solid green
(Low-Voltage Detection ACTIVE) or red (Low-
Voltage Detection DISABLED). The model is ready to drive.
Selecting Training Mode (Profile #3: 50% Forward, 100% Brakes, 50% Reverse)
1. Connect a fully charged battery pack to the VXL-
3s and turn on your transmitter.
2. With the VXL-3s off, press and hold the EZ-Set
button until the LED turns solid green, then solid
red and then begins blinking red (indicating the
Profile numbers).
3. When the LED blinks red three times, release the EZ-Set button.
4. The LED will blink and then turn solid green
(Low-Voltage Detection ACTIVE) or red (Low-
Voltage Detection DISABLED). The model is
ready to drive.
Note: If you missed the mode you wanted, keep
the EZ-Set button pressed down and the blink cycle will repeat until the button is
released and a Mode is selected.
LED Codes and Protection Modes
• Solid Green: VXL-3s power-on light. Low-Voltage Detection is
ACTIVATED (LiPo setting).
• Solid Red: VXL-3s power-on light. Low-Voltage Detection is
DISABLED (NiCad/NiMH setting). Never use LiPo batteries while Low-
Voltage Detection is disabled.
• Slow Blinking Red (with Low-Voltage Detection on): The VXL-3s has
entered Low-Voltage Protection. When the battery voltage begins
to reach the minimum recommended discharge voltage threshold
for LiPo battery packs, the VXL-3s will limit the power output to
50% throttle. When the battery voltage attempts to fall below the
minimum threshold, the VXL-3s will shut down all motor output.
The LED on the speed control will slowly blink red, indicating a
low-voltage shutdown. The VXL-3s will stay in this mode until a fully
charged battery is connected.
• Fast Blinking Red: Thermal Shutdown Protection Stage 1. If the
motor has lower than normal power and the VXL-3s is hot, the VXL-3s
has entered Stage 1 Thermal Shutdown Protection to guard against
overheating caused by excessive current flow. If the motor has no
power and the VXL-3s is very hot, the VXL-3s has entered Stage 2
Thermal Shutdown Protection and has automatically shut down.
Let the VXL-3s cool. Make sure your model is properly geared for the
conditions (see page 25).
• Very Fast Blinking Red: Thermal Shutdown Protection and Low
Voltage Protection (see above) have occurred at the same time.
• Alternating; Blinks Red then Green: If the motor has no power,
the VXL-3s has entered Over Voltage Protection. If a battery with
too high voltage is used, the VXL-3s will go into a fail-safe mode.
WARNING: If input voltage exceeds approximately 20-volts,
the ESC may be damaged. Do not exceed 12.6 maximum peak input
voltage.
• Blinking Green: The VXL-3s is indicating the transmitter
Throttle Trim (see page 26) is incorrectly set. If the Multi-Function
knob is set to throttle trim, then adjust the Throttle Trim to the
middle “0” setting.
B
One blink Red
A
Green to Red to Off
D
Solid
C
Release
B
Two blinks Red
A
Green to Red to Off
D
Solid
C
Release
B
Three blinks Red
A
Green to Red to Off
D
Solid
C
Release

SLASH 4X4 ULTIMATE •19
DRIVING YOUR MODEL
Now it’s time to have some fun! This section contains instructions on
driving and making adjustments to your model. Before you go on, here
are some important precautions to keep in mind.
• Allow the model to cool for a few minutes between runs. This is
particularly important when using high capacity battery packs that
allow extended periods of running. Monitoring temperatures will
extend the lives of the batteries and motors. See page 28 for advanced
user information on monitoring temperatures.
• Do not continue to operate the model with low batteries or you
could lose control of it. Indications of low battery power include slow
operation, sluggish servos (slow to return to center), or ESC shutdown
due to the Low-Voltage Detection circuitry. Stop immediately at the
first sign of weak batteries. When the batteries in the transmitter
become weak, the power light will begin to flash red. Stop immediately
and install new batteries.
• Do not drive the model at night, on public streets, or in large crowds of
people.
• If the model becomes stuck against an object, do not continue to run
the motor. Remove the obstruction before continuing. Do not push or
pull objects with the model.
• Because the model is controlled by radio, it is subject to radio
interference from many sources beyond your control. Since radio
interference can cause momentary losses of control, allow a safety
margin of space in all directions around the model in order to prevent
collisions.
• Use good, common sense whenever you are driving your model.
Intentionally driving in an abusive and rough manner will only result in
poor performance and broken parts. Take care of your model so that
you can enjoy it for a long time to come.
• When using the supplied optional pinion for top-speed running, limit
your driving to paved surfaces only. Running in grass and off-road
could cause excessive loads on the electrical system in the model.
• High-performance vehicles produce small vibrations that may loosen
hardware over time. Frequently check wheel nuts and other screws on
your vehicle to ensure that all hardware remains properly tightened.
About Run Time
A large factor affecting run time is the type and condition of your
batteries. The milliamp hour (mAh) rating of the batteries determines
how large their “fuel tank” is. A 3000mAh battery pack will theoretically
run twice as long as a 1500mAh sport pack. Because of the wide
variation in the types of batteries that are available and the methods
with which they can be charged, it’s impossible to give exact run times
for the model.
Another major factor that affects run time is how the model is driven.
Run times may decrease when the model is driven repetitively from a
stop to top speed and with repetitive hard acceleration.
Tips for Increasing Run Time
• Use batteries with the highest mAh rating you can purchase.
• Use a high-quality peak-detecting charger.
• Read and follow all maintenance and care instructions provided by the
manufacturer of your batteries and charger.
• Keep the VXL-3s cool. Get plenty of airflow across the ESC heat sink.
• Use the correct Low-Voltage Detection setting for your battery (see
page 17). Low-Voltage Detection can be off for maximum NiMH battery
runtime. Never use LiPo batteries while Low-Voltage Detection is
turned off.
• Maintain your model. Do not allow dirt or damaged parts to cause
binding in the drivetrain. Keep the motor clean.
• Lower your gear ratio. Installing a smaller pinion or larger spur gear
will lower your gear ratio, causing less power draw from the motor and
battery and reducing overall operating temperatures.
mAh Ratings and Power Output
The mAh rating of the battery can effect your top-speed performance.
The higher capacity battery packs experience less voltage drop under
heavy load than low mAh rated packs. The higher voltage potential
allows increased speed until the battery begins to become discharged.
9

20 •SLASH 4X4 ULTIMATE
RUNNING IN WET CONDITIONS
Your new Traxxas model is designed with water-resistant features to
protect the electronics in the model (receiver, servos, electronic speed
control). This gives you the freedom to have fun driving your model
through puddles, wet grass, snow, and through other wet conditions.
Though highly water resistant, the model should not be treated as
though it is submersible or totally 100% waterproof. Water resistance
applies only to the installed electronic components. Running in wet
conditions requires additional care and maintenance for the mechanical
and electrical components to prevent corrosion of metal parts and
maintain their proper function.
Precautions
• Without proper care, some parts of your model can be seriously
damaged due to contact with water. Know that additional
maintenance procedures will be required after running in wet
conditions in order to maintain the performance of your model. Do
not run your model in wet conditions if you are not willing to accept
the additional care and maintenance responsibilities.
• Not all batteries can be used in wet environments. Consult your battery
manufacturer to see if their batteries can be used in wet conditions. Do
not use LiPo batteries in wet conditions.
• The Traxxas TQi transmitter is not water resistant. Do not subject it to
wet conditions such as rain.
• Do not operate your model during a rain storm or other inclement
weather where lightning may be present.
• Do NOT allow your model to come in contact with salt water (ocean
water), brackish water (between fresh water and ocean water), or
other contaminated water. Salt water is highly conductive and highly
corrosive. Use caution if you plan to run your model on or near a beach.
Before Running Your Vehicle in Wet Conditions
1. Consult the section “After Running Your Vehicle in Wet Conditions”
before proceeding. Make sure you understand the additional
maintenance required with wet running.
2. The wheels have small holes molded in to allow air to enter and exit
the tire during normal running. Water will enter these holes and get
trapped inside the tires if holes are not cut in the tires. Cut two small
holes (3mm or 1/8” diameter) in each tire. Each hole should be near the
tire center-line, 180° apart.
3. Confirm that the RX box O-ring and cover are installed correctly and
secure. Make sure the screws are tight and the blue O-ring is not visibly
protruding from the edge of the cover.
4. Confirm that your batteries can be used in wet conditions.
5. Use lower gearing (smaller pinion gears, as low as 9T or spur gear as
large as 54T) when running in mud, deep puddles, snow, or other
similar situations that will restrict the tires and put much higher loads
on the motor.
Motor Precautions
• Velineon motor life can be greatly reduced in mud and water. If the
motor gets excessively wet or submerged, use very light throttle (run the
motor slowly) until the excess water can run out. Applying full throttle to
a motor full of water can cause rapid motor failure. Your driving habits
will determine motor life with a wet motor. Do not submerge the motor
under water.
• Do not gear the motor by temperature when running in wet conditions.
The motor will be cooled by water contact and will not give an accurate
indication of appropriate gearing.
• Use special care when operating your model in muddy conditions. Stop
operating your model if it appears to be straining due to the tackiness of
the mud or build-up of mud on the chassis. Do not allow mud to collect
on the motor or pack around the motor.
After Running Your Vehicle in Wet Conditions
1. Drain the tires by spinning the tires at high speed to “sling” the water
out. One way to do this is to make several high-speed passes on a flat,
dry surface, if possible.
2. Remove the batteries.
3.
Rinse excess dirt and mud off the truck with low-pressure water, such
as from a garden hose. Do NOT use a pressure washer or other high-
pressure water. Avoid directing water into the bearings, differentials, etc.
4. Blow off the truck with compressed air (optional, but recommended).
Wear safety glasses when using compressed air.
5. Remove the wheels from the truck.
6. Spray all the bearings, drivetrain, and fasteners with WD-40® or similar
water displacing light oil.
DRIVING YOUR MODEL