Transfer Flow TRAX 3 User manual

Fuel Management System for
Transfer Flow Auxiliary Fuel Tanks
NEW
FEATURE:
Display Fuel
Levels in
Gallons
(See Page 5)
Owner’s Manual
™

TRAX 3™Fuel Management System......................................................................... 1
• Fuel System Overview........................................................................................... 1
• Liquid Crystal Display Overview........................................................................... 1
• Fuel Transfer Operation ....................................................................................... 2
Computer Module Overview ..................................................................................... 3
Frequently Asked Questions ..................................................................................... 4
Maintenance and Troubleshooting .......................................................................... 6
TRAX 3™ Troubleshooting Table............................................................................... 7
Important Safety Information ................................................................................... 8
Transfer Flow Replacement Parts............................................................................. 9
Warranty ...................................................................................................................... 9
Table of Contents
1444 Fortress Street, Chico, CA 95973
[phone] • [phone]
Fax [phone]
www.TransferFlow.com

TRAX 3™ is a computer-controlled, self-diagnosing auxiliary fuel system that
automatically transfers fuel from the auxiliary tank to the main tank using
our exclusive AutoTrans® technology. The TRAX 3™ system also monitors the
vehicle’s fuel system status and the fuel levels of each tank. TRAX 3™ transfers
fuel as needed with an electric fuel pump at a rate of one gallon every three
minutes.
Fuel System Overview
The TRAX 3™ system will transfer fuel at predetermined fuel levels while the
vehicle is in use, based on the individual vehicle fuel system calibration and
size of the Transfer Flow auxiliary fuel tank. The fuel level in the main tank and
auxiliary tank will decrease at similar rates and the LCD will display the fuel
level percentages or gallons in each tank and the operational status of the
system.
When the system is not transferring fuel and all is normal, the System Indicator
(in bottom left corner of LCD), will ash on and o. When the fuel system is
transferring fuel, the message, “PUMP ON” will ash on the right side of the LCD.
If there is an issue with the fuel system, the LCD will display a Diagnostic Trouble
Code (DTC). The TRAX 3™ computer module works independent of the LCD. If
the LCD is disconnected, the computer module will still monitor and transfer fuel
normally.
TRAX 3™Fuel Management System
Liquid Crystal Display Overview
= Each black bar is equivalent to 10% fuel capacity.
= Each 1/2 black bar is equivalent to 5% fuel capacity.
Page 1
Left Button Right Button
System
Indicator
(Flashes)
Main Tank
Fuel Level
Auxiliary Tank
Fuel Level
Fuel Level Percentage
or Gallons

Fuel Transfer Operation
When the main and auxiliary fuel tanks are at or near full, the
LCD displays “Full” for both tanks.
During fuel transfers, “PUMP ON” will ash. The system main-
tains balanced fuel levels in both tanks until each tank reaches
25%.
When both tanks reach 25%, fuel is transferred to the main
tank, keeping it 25% full until the auxiliary tank is empty.
When either tank falls below 10%, the display will read “LOW”.
When the main tank falls below 85%, the system automatically
transfers fuel from the auxiliary to keep the main tank at 85%
until both tanks are equal.
Page 2
Note: Once the auxiliary tank reaches its nal 1 gallon of remaining
fuel, the pump will run for 10. min. consecutively. If the power is
disconnected (e.g., the vehicle is shut o) during this period, the 10
min. period will start over when the power is restored.

Computer Module Overview
Page 3

How accurate is my main tank fuel gauge after installing TRAX 3™?
The accuracy of the main fuel gauge will not change. The TRAX 3™ computer
module is wired into the truck’s main wire harness, in between the main fuel
tank and the fuel gauge. The TRAX 3™ module monitors the level of fuel in the
main tank, and then sends that same information to the fuel gauge on the
dash. The stock in-dash fuel gauge displays the level of fuel in the main tank as
it did before installing the TRAX 3™ auxiliary fuel system.
How do I adjust the contrast and brightness of my screen?
The two buttons on the front of the TRAX 3™ LCD module can be used to
adjust the contrast and backlight of the LCD display.
Steps to adjust the contrast or backlight setting:
1. With the ignition in the On position, the TRAX 3™ module should be
operational. Press the Right button on the front of the display until you
reach “Contrast” or “Brightness” screen.
2. Press “OK” to enter, then press the up or down button to adjust the
contrast or backlight, respectively.
3. To exit the “LCD Adjust” mode and save your settings, do not press any
more buttons; the display will automatically default back to the fuel level
screen in approximately 3 to 4 seconds.
I previously bought a Transfer Flow auxiliary tank. Can I transfer it
to my new truck?
It depends on the truck you are buying. You may need to purchase a re-
installation kit. Call us at [phone] x2 or [phone] x2 for more
information.
Why do I see my fuel level percentage uctuate ±10% in the rst
two minutes of operation?
The module is rapidly calculating the fuel level in each tank to determine
the most accurate value. Fluctuations should slow after a few minutes of
operation.
Why is the TRAX 3™ LCD displaying “CHK FLTR” when my system is
brand new or the lter is clean?
This may be due to an individual’s driving habits, driving conditions, or fuel
sloshing in the main or auxiliary tank. The “Check Filter” condition will reset
after 20 minutes or by cycling the ignition (turning it o then on again).
Frequently Asked Questions
Page 4

The fuel levels displayed on the LCD change when cornering hard
or during other rapid motions. Is this normal?
Yes, your Transfer Flow fuel tank system has been designed to keep fuel
sloshing to a minimum. However, it is not possible to completely eliminate all
fuel sloshing. Many times, you will nd that fuel sloshing will be greater in the
main tank compared to the Transfer Flow tank. This is because the Transfer
Flow tank is fully baed while most main tanks are not. In either case, you
should not see a fuel level change of more than ±10%, except under periods
of high cornering, braking, or acceleration loads. If your main tank is close to
empty, you may see the low fuel light turn On and O.
If the TRAX 3™ system develops a problem, what do I do?
Consult the troubleshooting table on Page 7 or deactivate the system by
disconnecting the power to the computer module, located on the top or side
of the auxiliary tank. Reference the “TRAX 3™ Computer Module Overview”
diagram on Page 4; disconnect the three pin connector with the red and black
wire that goes to the Transfer Flow wire harness. The LCD will display, “TRAX
3™ Connecting.....” when the power is disconnected and the ignition is cycled.
The vehicle will now operate from the main tank only and the main tank
gauge will read the fuel level in the main tank just as though the Transfer Flow
system was never installed. Please call Technical Support at [phone] x2
or [phone] x2 if you ever have this issue.
How do I program the LCD to display fuel levels in gallons?
1. Press and hold Right button when turning the system on.
2. Release the button once the serial number is displayed.
3. When system is showing fuel levels, press the Right button until
“Show Gallons” is displayed.
4. Press the Left button to turn the “Show Gallons” feature on.
5. Press the Left button for on, and Right button for o.
Note: Fuel level readings are only approximate. To toggle back to
percentages, repeat these steps, pressing the Right button to turn “Show
Gallons” o.
Page 5
Gallons in Main Tank
Gallons in Auxiliary Tank

Filter Maintenance
To replace the auxiliary fuel tank lter, remove the cover box to access the
in-line lter and fuel hoses. Be certain that the lter is in the right direction.
Replace the lter with one listed in Filter Replacement Options below.
Replacement after initial installation:
The fuel lter should be replaced within 3 to 6 months after installation.
Transfer Flow includes an extra lter with your initial purchase.
Routine filter replacement:
Transfer Flow recommends the lter be replaced every 12 months on vehicles
that see normal use. If the vehicle is operated in dusty conditions or driven
more than 20,000 miles per year, the lter should be changed every 6 months.
Vehicles traveling outside the United States and Canada may be exposed to
lling stations containing elevated levels of contaminants. It may be wise to
carry spare lters when traveling outside of the country.
Filter Replacement Options:
Use NAPA 3270, WIX 33270 or Transfer Flow part no. 070-FL-33617.
If the LCD still displays “CHK FLTR” after replacing the lter, please call
technical support at [phone] x2 or [phone] x2.
“Critical Failure/Disconnect Power”
If the LCD displays, “CRITICAL FAILURE/DISCONNECT POWER” the user should
deactivate the system by disconnecting the power to the computer module,
located on the top or side of the auxiliary tank. Reference the “TRAX 3™
Computer Module Overview” diagram on Page 4; disconnect the three pin
connector with the red and black wire that goes to the TFI wire harness. The
LCD will display, “TRAX 3™ Connecting.....” when the power is disconnected and
the ignition is cycled. The vehicle will now operate from the main tank only and
the main tank gauge will read the fuel level in the main tank just as though the
Transfer Flow system was never installed. Please call technical support at (800)
442-0056 x2 or [phone] x2 if you experience this issue.
Maintenance and Troubleshooting
Page 6

TRAX 3™Troubleshooting Table
Symptom TRAX 3™
Display DTC Denition/Possible Cause Possible Remedy/Repair
OEM fuel
gauge
uctuates
Aux pump on, outside of
transfer range
Disconnect main
power at module/
call Transfer Flow
Technical Support
OEM fuel
gauge at
empty
MSL (MAIN
& AUX fuel
level at 0%)
Main sender low/sending unit bad
or a wire shorted to ground
Call Transfer Flow
Technical Support
OEM fuel
gauge at
empty
MSH (MAIN
& AUX fuel
level at 0%)
Main sender high/malfunctioning
sender
Call Transfer Flow
Technical Support
OEM fuel
gauge at
empty
MSO (MAIN
& AUX fuel
level at 0%)
Main sender open/severed main
sender wire, defective sender,
improper electrical connection
Call Transfer Flow
Technical Support
Pump not
transferring
ASL & AUX
fuel level at
0%
Aux sender low/sending unit bad
or a wire shored to ground
Call Transfer Flow
Technical Support
Pump not
transferring
ASH & AUX
fuel level at
0%
Aux sender high/malfunctioning
sender
Call Transfer Flow
Technical Support
Pump not
transferring
ASO & AUX
fuel level at
0%
Aux sender open/severed auxiliary
sender wire, defective sender,
improper electrical connection
Call Transfer Flow
Technical Support
Pump not
staying on CHK FLTR
Filter clogged/ow rate not adequate,
kinked line, broken electrical
connection, or excessive fuel sloshing
Replace lter/call
Technical Support
Display not
turning on Blank Display not getting power
Check for 12V
@ TRAX 3™ LCD,
check fuse/call
Technical Support
Page 7
CRITICAL
FAILURE
DISCONNECT
POWER
Transfer Flow Technical Support: [phone] x2 or [phone] x2

Manual operation of the TRAX 3™ Liquid Crystal Display (LCD)
while driving could lead to unsafe driving conditions which can
cause an accident or a serious injury. Observing the screen
should only be done when it is safe to do so. Mounting the TRAX
3™ LCD and routing the wire harness should be done where the
driver’s view or operation of the vehicle cannot be obstructed.
Important Safety Information
Page 8
Filling Fuel Tank:
• Never ll a fuel tank near a ame or ignition source which might ignite the
fuel vapors.
• Never ll the OEM or Transfer Flow auxiliary fuel tank with the engine or
ignition turned on.
• Avoid breathing fuel vapors or allowing fuel to contact the skin.
• Always ll fuel tanks while the vehicle is on a at level surface.
• Always open the fuel cap slowly to allow any pressure to escape.
• Never overll or “top-o” any fuel tank. Overlling the fuel tank may cause
damage to the emissions system, cause dangerous spills and possibly result
in a re. The Transfer Flow TRAX 3™ system may also shut down in the event
of a “top o” condition.
• Never siphon fuel using the mouth, as this practice is dangerous and
potentially fatal. Use an appropriate pump.
• Never allow fuel to contaminate soil or waterways. Properly contain and
dispose of spilled fuels and cleanup materials.
Other Important Safety Information:
• Use only Transfer Flow replacement parts. Many parts of our fuel system
appear common, but are actually special parts which are critical for safe
operation. See Page 9 for more information.
• Disconnect the battery before working on Transfer Flow fuel systems.
• Never modify or over-pressurize a fuel tank.
• Do not grind, torch, weld, cut, or modify a fuel tank.
• Do not sleep or let pets stay in a pickup with a camper shell that contains an
in-bed fuel tank system.
• Do not smoke near a fuel tank.
• Never connect a TRAX 3™ system to a previously modied fuel system.
TRAX 3™ is designed to work only with Transfer Flow auxiliary fuel tanks.
Under no circumstance should TRAX 3™ be used in conjunction with a
modied fuel tank system or other aftermarket fuel tank systems.

Transfer Flow fuel systems are designed to work only with specic
components which have been selected for their unique properties. Years of
design work have produced the nest auxiliary fuel system available that relies
on relatively few, but critical parts. The components used in Transfer Flow fuel
systems are not generic or “o the shelf” parts and cannot be replaced with
parts that appear to be similar.
For example, the in-line fuel pump used with our TRAX 3™ system appears to
be a normal fuel pump, but it is actually a high-quality solenoid pump with a
critical forward and reverse check feature. Under no condition should any
other pump be substituted for the provided pump.
This auxiliary fuel system has been outtted with a replaceable fuel lter
that requires periodic service. The lter is available though automotive parts
retailers and is not covered by Transfer Flow’s warranty. The lter should be
inspected/replaced every 3–6 months depending on the conditions that the
vehicle is operated in and the quality of fuel purchased. Transfer Flow will not
honor warranty claims from diagnosis or replacement of obstructed lters.
24-Hour Emergency Technical Help:
Contact Transfer Flow at [phone] x9 or [phone] X9 if your
Transfer Flow auxiliary fuel system fails to operate properly, or if you have any
questions regarding parts replacement.
Transfer Flow Replacement Parts
6 Year, Unlimited Mile Warranty
Transfer Flow fuel systems and vehicle accessories
are covered by a six year, unlimited mile warranty
against defects in material and workmanship
throughout the U.S. and Canada from the unit
purchase date by the original purchaser for the
original vehicle the unit was installed in.
For specic information regarding part exceptions,
exclusions and limitations, warranty claim
procedures, and federal regulatory provisions, please see our full
warranty details on our website at www.TransferFlow.com/warranty.
Page 9

© Transfer Flow Printed in USA REV 4/19/2018
1444 Fortress Street, Chico, CA 95973
[phone] • [phone]
Fax [phone]
www.TransferFlow.com