Launch X-431 PRO3S+ User manual

Version: V1.00.000
Revised date: March 19, 2021
Statement: LAUNCH owns the complete intellectual property rights for the
software used by this product. For any reverse engineering or cracking actions
against the software, LAUNCH will block the use of this product and reserve the
right to pursue their legal liabilities.

LAUNCH X-431 PRO3S+ V2.0 User Manual
i
Copyright Information
Copyright © 2021 by LAUNCH TECH CO., LTD. All rights reserved. No part of
this publication may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording or
otherwise, without the prior written permission of LAUNCH. The information
contained herein is designed only for the use of this unit. LAUNCH is not
responsible for any use of this information as applied to other units.
Neither LAUNCH nor its affiliates shall be liable to the purchaser of this unit or
third parties for damages, losses, costs, or expenses incurred by purchaser or
third parties as a result of: Accident, misuse, or abuse of this unit, or
unauthorized modifications, repairs, or alterations to this unit, or failure to strictly
comply with LAUNCH operating and maintenance instructions. LAUNCH shall
not be liable for any damages or problems arising from the use of any options or
any consumable products other than those designated as Original LAUNCH
Products or LAUNCH Approved Products by LAUNCH.
Trademark Information
LAUNCH is a registered trademark of LAUNCH TECH CO., LTD. (LAUNCH) in
China and other countries. All other LAUNCH trademarks, service marks,
domain names, logos, and company names referred to in this manual are either
trademarks, registered trademarks, service marks, domain names, logos,
company names of or are otherwise the property of LAUNCH or its affiliates. In
countries where any of the LAUNCH trademarks, service marks, domain names,
logos and company names are not registered, LAUNCH claims other rights
associated with unregistered trademarks, service marks, domain names, logos,
and company names. Other products or company names referred to in this
manual may be trademarks of their respective owners. You may not use any
trademark, service mark, domain name, logo, or company name of LAUNCH or
any third party without permission from the owner of the applicable trademark,
service mark, domain name, logo, or company name. You may contact LAUNCH
by visiting the website at www.cnlaunch.com, or writing to LAUNCH TECH CO.,
LTD., Launch Industrial Park, North of Wuhe Avenue, Banxuegang, Bantian,
Longgang, Shenzhen, Guangdong, P.R.China, to request written permission to
use Materials on this manual for purposes or for all other questions relating to
this manual.

LAUNCH X-431 PRO3S+ V2.0 User Manual
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Important Safety Precautions
Important: To avoid personal injury, property damage, or accidental damage to
the product, read all of the information in this section before using the product.
 Never collide, throw, or puncture the tool, and avoid falling, extruding and
bending it.
 Do not insert foreign objects into or place heavy objects on your device.
Sensitive components inside might cause damage.
 Do not use the tool in exceptionally cold or hot, dusty, damp or dry
environments.
 In places using the tool may cause interference or generate a potential risk,
please turn it off.
 This tool is a sealed unit. There are no end-user serviceable parts inside. All
internal repairs must be done by an authorized repair facility or qualified
technician. If there is any inquiry, please contact the dealer.
 Never place the tool into apparatus with strong electromagnetic field.
 Keep the tool far away from magnetic devices because its radiations can
damage the screen and erase the data stored on the tool.
 DANGER: Do not attempt to replace the internal rechargeable lithium battery.
Contact the dealer for factory replacement.
 CAUTION: Please use the included battery and charger. Risk of explosion if
the battery is replaced with an incorrect type.
Precautions on Using this tool
Before using this tool, please read the following safety information carefully.
 Always perform automotive testing in a safe environment.
 If the VCI (Vehicle Communication Interface) device is not in use for a long
period of time, it is suggested to unplug the connector from vehicle’s DLC to
conserve battery power.
 Wear an ANSI-approved eye shield when testing or repairing vehicles.
 The vehicle shall be tested in a well-ventilated work area, as engines produce
various poisonous compounds (hydrocarbon, carbon monoxide, nitrogen
oxides, etc.)
 Do not connect or disconnect any test equipment while the ignition is on or

LAUNCH X-431 PRO3S+ V2.0 User Manual
iii
the engine is running.
 Put blocks in front of the drive wheels and never leave the vehicle unattended
while testing.
 Keep the tool dry, clean, free from oil, water or grease. Use a mild detergent
on a clean cloth to clear the outside of the equipment as necessary.
 Do not drive the vehicle and operate the tool at the same time. Any distraction
may cause an accident.
 Keep clothing, hair, hands, tools, test equipment, etc. away from all moving or
hot engine parts.
 Before starting the engine, put the gear lever in the Neutral position (for
manual transmission) or in the Park (for automatic transmission) position to
avoid injury.
 To avoid damaging the tool or generating false data, please make sure the
vehicle battery is fully charged and the connection to the vehicle DLC (Data
Link Connector) is clear and secure.
 Automotive batteries contain sulfuric acid that is harmful to skin. In operation,
direct contact with the automotive batteries should be avoided. Keep the
ignition sources away from the battery at all times.
Precautions on Operating Vehicle’s ECU
 Do not disconnect battery or any wiring cables in the vehicle when the ignition
switch is on, as this could avoid damage to the sensors or the ECU.
 Do not place any magnetic objects near the ECU. Disconnect the power
supply to the ECU before performing any welding operations on the vehicle.
 Use extreme caution when performing any operations near the ECU or
sensors. Ground yourself when you disassemble PROM, otherwise ECU and
sensors can be damaged by static electricity.
 When reconnecting the ECU harness connector, be sure it is attached firmly,
otherwise electronic elements, such as ICs inside the ECU, can be damaged.

LAUNCH X-431 PRO3S+ V2.0 User Manual
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FCC Statement
Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This device complies with 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.
Note: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio
frequency energy, and if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.

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TABLE OF CONTENTS
1 INTRODUCTION .......................................................................................... 1
1.1 PRODUCT PROFILE .................................................................................. 1
1.2 PACKAGE LIST (ONLY FOR PASSENGER VEHICLE CONFIGURATION) ........... 2
1.2 PACKAGE LIST (ONLY FOR DIESEL & GASOLINE CONFIGURATION) ............. 3
1.3 COMPONENTS & CONTROLS .................................................................... 4
1.3.1 Display tablet ................................................................................. 4
1.3.2 VCI connector (Only for Passenger Vehicle Configuration) ............ 6
1.3.2 VCI module (Only for Diesel & Gasoline Configuration) ................. 6
1.4 TECHNICAL PARAMETERS ........................................................................ 8
1.4.1 Display tablet ................................................................................. 8
1.4.2 VCI device (Only for Passenger Vehicle Configuration) ................. 8
1.4.2 VCI module (Only for Diesel & Gasoline Configuration) ................. 9
2 INITIAL USE ............................................................................................... 10
2.1 CHARGING THE TABLET ......................................................................... 10
2.2 POW ER ON/OFF ..................................................................................... 10
2.2.1 Power on ...................................................................................... 10
2.2.2 Power off ...................................................................................... 10
2.3 BASIC GESTURES .................................................................................. 11
2.4 SCREEN LAYOUT ................................................................................... 11
2.5 ADJUST BRIGHTNESS ............................................................................ 11
2.6 CHANGE SYSTEM LANGUAGE ................................................................. 12
2.7 SET STANDBY TIME ............................................................................... 12
3 NETWORK SETUP .................................................................................... 13
3.1 CONNECT TO A WI-FI NETWORK ............................................................ 13
3.2 DISCONNECT FROM A WI-FI NETWORK ................................................... 13
4 GETTING STARTED .................................................................................. 14
4.1 REGISTER & DOWNLOAD DIAGNOSTIC SOFTWARE .................................. 14
4.2 JOB MENU ............................................................................................ 17

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4.3 DIAGNOSTICS TOOLBAR......................................................................... 18
4.4 CONNECTIONS ...................................................................................... 19
4.4.1 Preparation .................................................................................. 19
4.4.2 DLC location ................................................................................ 19
4.4.3 Vehicle connection (For Passenger Vehicle Configuration) .......... 19
4.4.3 Vehicle connection (Only for Diesel & Gasoline Configuration) .... 21
5 DIAGNOSE................................................................................................. 22
5.1 INTELLIGENT DIAGNOSE......................................................................... 22
5.2 LOCAL DIAGNOSE .................................................................................. 26
5.2.1 Health Report (Quick Test) ........................................................... 32
5.2.2 System Scan ................................................................................ 35
5.2.3 System Selection ......................................................................... 36
5.3 REMOTE DIAGNOSE ............................................................................... 47
5.3.1 Interface Layout ........................................................................... 47
5.3.2 Add Friends .................................................................................. 48
5.3.3 Start Instant Messaging ................................................................ 49
5.3.4 Launch Remote Diagnosis (Device-To-Device) ............................ 51
5.3.5 Launch Remote Diagnosis (Device-To-PC) .................................. 54
5.4 FEEDBACK ............................................................................................ 56
5.5 DIAGNOSTIC HISTORY ........................................................................... 57
5.6 MY REPORT .......................................................................................... 58
6 SPECIAL (RESET) FUNCTION .................................................................. 60
6.1 OIL RESET SERVICE .............................................................................. 61
6.2 ELECTRONIC PARKING BRAKE RESET..................................................... 61
6.3 STEERING ANGLE CALIBRATION ............................................................. 62
6.4 ABS BLEEDING ..................................................................................... 62
6.5 TIRE PRESSURE MONITOR SYSTEM RESET ............................................. 62
6.6 GEAR LEARNING ................................................................................... 62
6.7 IMMO SERVICE..................................................................................... 63
6.8 INJECTOR CODING................................................................................. 63

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6.9 BATTERY MAINTENANCE SYSTEM RESET................................................ 64
6.10 DIESEL PARTICULATE FILTER (DPF) REGENERATION ............................ 64
6.11 ELECTRONIC THROTTLE POSITION RESET ............................................ 65
6.12 GEARBOX MATCHING .......................................................................... 65
6.13 AFS (ADAPTIVE FRONT-LIGHTING SYSTEM) RESET ............................... 65
6.14 SUNROOF INITIALIZATION ..................................................................... 65
6.15 SUSPENSION CALIBRATION .................................................................. 65
7 SOFTWARE UPDATE ................................................................................ 66
7.1 UPDATE DIAGNOSTIC SOFTWARE & APP ................................................ 66
7.2 UPDATE FREQUENTLY USED SOFTWARE ................................................ 67
7.3 RENEW SOFTWARE SUBSCRIPTION ........................................................ 68
8 USER INFO ................................................................................................ 70
8.1 VCI ...................................................................................................... 70
8.2 VCI MANAGEMENT (ONLY FOR PASSENGER VEHICLE CONFIGURATION) ... 70
8.2 VCI MANAGEMENT (ONLY FOR DIESEL & GASOLINE CONFIGURATION) ..... 70
8.3 ACTIVATE VCI ....................................................................................... 72
8.4 FIRMWARE FIX ...................................................................................... 73
8.5 DATA STREAM SAMPLE.......................................................................... 73
8.6 MY ORDER ........................................................................................... 73
8.7 SUBSCRIPTION RENEWAL CARD ............................................................. 73
8.8 PROFILE ............................................................................................... 74
8.9 CHANGE PASSWORD ............................................................................. 74
8.10 SETTINGS ........................................................................................... 74
8.10.1 Units ........................................................................................... 74
8.10.2 Shop Information ........................................................................ 75
8.10.3 Printer Set .................................................................................. 75
8.10.4 Orientation ................................................................................. 78
8.10.5 Clear Cache ............................................................................... 79
8.10.6 About .......................................................................................... 79
8.10.7 Diagnostic Software Auto Update ............................................... 79

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8.10.8 Device Account Management ..................................................... 79
8.10.9 Login/Logout .............................................................................. 81
8.11 DIAGNOSTIC SOFTWARE CLEAR ........................................................... 81
9 TPMS.......................................................................................................... 82
10 FAQ .......................................................................................................... 83

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1 Introduction
1.1 Product Profile
X-431 PRO3S+ V2.0 inherits from LAUNCH’s advanced diagnosing technology
and is characterized by covering a wide range of vehicles, featuring powerful
functions, and providing precise test result. Through the simple Bluetooth (for
Passenger Vehicle configuration) / Bluetooth or Wi-Fi communication (for Diesel
& Gasoline configuration) between VCI (Vehicle Communication Interface)
device and the display tablet, it achieves full car model and full system vehicle
trouble diagnosis, which include Reading DTCs, Clearing DTCs, Reading Data
Stream, Actuation Test and Special Functions.
It supports the following functions:
 Intelligent Diagnose: This module allows you to use the VIN information of the
currently identified vehicle to access its data (including vehicle information,
historical diagnostic records) from the cloud server to perform quick test.
 Local Diagnose: Follow the on-screen prompts to start diagnostic session
step by step. Diagnosis functions include: Read DTCs, Clear DTCs, Read
Data Stream, Special Functions etc.
 Remote Diagnose: This option aims to help repair shops or technicians
launch instant messaging and remote diagnosis, making the repair job getting
fixed faster.
 Reset: All kinds of common maintenance and reset items including Oil lamp
reset, DPF regeneration, ABS bleeding etc. can be done.
 TPMS: This module allows you to configure the tablet as TPMS activation &
diagnostic tool, which provides the ability to trigger TPMS sensor, program
TPMS sensor, perform the relearning procedure. It needs to work with the
X-431 TSGUN device (sold separately).
 One-click Update: Lets you update your diagnostic software online.
 Diagnostic History: This function provides a quick access to the tested
vehicles and users can choose to view the test report or resume from the last
operation, without starting from scratch.
 Feedback: Enables you to submit the vehicle issue to us for analysis and
troubleshooting.

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 Vehicle Coverage: Quick dial to view the vehicle models that the tool covers.
1.2 Package List (Only for Passenger Vehicle Configuration)
Common accessories are same, but for different destinations, the accessories
(such as diagnostic software, testing connectors) may vary. Please consult from
the local agency or check the package list supplied with this tool together.
No.
Item
Descriptions
Q
t.
1 Display tablet Indicates the test result. 1
2 VCI connector Collects the vehicle data and sends it
to the tablet for analysis. 1
3 OBD II extension
cable
To connect the VCI connector to the
OBD II vehicle’s DLC. 1
4 Password envelope
A piece of paper bearing the product
Serial Number and Activation Code for
product registration.
1
5 Power adaptor For charging the tablet via AC outlet. (Optional)
6 Battery clamps
cable
To supply power to the non-
16pin
connector from the vehicle’s battery. (Optional)
7 Cigarette lighter
cable
To supply power to the non-
16pin
connector from the vehicle’
s cigarette
lighter receptacle.
(Optional)
8 USB cable 1
9 OBD I adaptor box
For connecting the VCI connector and
non-16pin adaptor cable. (Optional)
10
Non-16pin adaptor
cable kit
To connect to the vehicle equipped
with non-OBD II management system.
(Optional)

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1.2 Package List (Only for Diesel & Gasoline Configuration)
Common accessories are same, but for different destinations, the accessories
(such as diagnostic software, testing connectors) may vary. Please consult from
the local agency or check the package list supplied with this tool together.
No.
Item
Descriptions
Q
t.
1 Display tablet
The central processor and monitor
for analyzing vehicle data and
showing test results.
1
2 VCI module A device for accessing vehicle live
data. 1
3 Password
envelope
A piece of paper bearing Product
S/N and Activation Code, which is
required for your registration.
1
4 Diagnostic cable To connect the VCI module to
vehicle’s DLC. 1
5 Cigarette lighter
cable
To supply power to the VCI module
through connection to cigarette
lighter receptacle.
(optional)
6 Battery clamps
cable
To supply power to the VCI module
through connection to vehicle’s
battery.
(optional)
7 OBD I adaptor
cable
A adaptor cable for connecting
non-16pin connector of passenger
vehicle.
(optional)
8 Power adaptor To charge the tablet through
connection to AC outlet. 1
9 USB cable with
B-shaped terminal
To connect the VCI module and
diagnostic tool to perform vehicle
diagnosis.
1

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10
Non-16pin
adaptor cable kit
for passenger
vehicles
For different vehicle diagnostic
socket, it may be necessary to use
one of the adaptor cables included
within the kit.
For detailed non-16pin adaptor
cables, please check the package
box.
(optional)
11
Non-16pin
adaptor cable kit
for commercial
vehicles
For detailed non-16pin adaptor
cables, please check the package
box.
(optional)
1.3 Components & Controls
There are two main components to the diagnostic system:
 Display Tablet – the central processor and monitor for the system (See
Chapter 1.3.1).
 VCI Device – the device for accessing vehicle data (See Chapter 1.3.2).
1.3.1 Display tablet
The tablet acts as the central processing system, which is used to receive and
analyze the live vehicle data from the VCI device and then output the test result.

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1
LCD
s
creen
Indicates the test results.
2 POWER key
In Off mode, press it for 3 seconds to turn the
tablet on.
In On mode:
 Press it once to activate the LCD if the LCD is
off.
 Press it once to turn off the LCD if the LCD
lights up.
 Press and hold it for 3 seconds to turn it off.
 Press and hold it for 8 seconds to perform
forced shutdown.
3
Volume +/
-
Adjusts the system volume.
4 Speakers
5 Front camera
6 USB/Charging
port
 To connect to AC outlet for charging.
 To connect to PC for data exchange.
7 Microphone
8 Rear camera

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9 Adjustable stand Flip it out to any angle and work comfortable at
your desk, or hang it on steering wheel.
1.3.2 VCI connector (Only for Passenger Vehicle Configuration)
The VCI works as a vehicle communication interface device, which is used to
connect to the vehicle’s DLC (Data Link Connector) socket directly or via OBD II
extension cable to read the vehicle data and then send it to the tablet via
Bluetooth.
1
OBD
-
16
diagnostic
connector Connects to vehicle’s OBD II DLC port.
2 Mode indicator
 It illuminates red when the VCI device is
connected to the vehicle’s DLC.
 Blue indicates the VCI device is working in
wireless (BT) communication mode.
1.3.2 VCI module (Only for Diesel & Gasoline Configuration)
Compatible with commercial & passenger vehicles, the VCI module works as a
vehicle communication interface device. It is used to read the vehicle data and

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7
then send it to the tablet via Bluetooth/Wi-Fi communication. The LEDs enable
you to easily identify the working status of the module.
1
DC
-
IN power jack
Connects the power adaptor.
2
Diagnostic socket
Connects the diagnostic cable.
3 LEDs
It is defined as follows:
 Vehicle: While communicating with the
vehicle, the indicator lights up and flashes.
Otherwise, it will not illuminate.
 Power: It illuminates solid red when the
module is powered on.
 BT: Blue indicates the module is working in
Bluetooth mode.
 I/O: It lights up when the module is
connected to the diagnostic tool via USB
cable (Currently disabled and only reserved for

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subsequent function extension).
 Wireless: It lights up when the module works
as a Wi-Fi hotspot or wireless adaptor.
4 USB port Currently disabled and only reserved for
subsequent function extension.
1.4 Technical Parameters
1.4.1 Display tablet
Operating system Android
Memory 3GB
Storage 32GB
Screen 10.1 inch FHD IPS capacitive touch screen with
a resolution of 1920 x 1200 pixels
Camera Front-facing 5.0MP camera + rear-facing 8.0MP
camera
Connectivity
 Wi-Fi (802.11a/b/g/n/ac)
 Bluetooth
Working temperature 0℃ ~ 50℃
Storage temperature -20 ~ ℃70℃
1.4.2 VCI device (Only for Passenger Vehicle Configuration)
Working voltage 9 ~18V
Working temperature 0℃ ~ 50℃
Relative humidity 20% ~ 90%

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1.4.2 VCI module (Only for Diesel & Gasoline Configuration)
Working voltage DC 9 ~36V
Power consumption ≤ 3W
Communication Via Bluetooth/Wi-Fi or USB connection
Working temperature 0 to 50℃

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2 Initial Use
2.1 Charging the Tablet
1. Plug one end of the included charging port of the tool, and the other end to
the power adaptor.
2. Connect the other end to the AC outlet.
If appears on the screen, it indicates it is being charged. If the logo changes
into , it indicates that the battery is fully charged. Unplug the power adaptor
from the tablet.
Caution: Please use the included power adaptor to charge your tool. No
responsibility can be assumed for any damage or loss caused as a result of using power
adaptors other than the one supplied.
Notes:
 If the battery remains unused for a long period of time or the battery is completely
discharged, it is normal that the tool will not power on while being charged. Please
charge it for a period of 5 minutes and then turn it on.
 While the tablet has low battery, a beep will sound. If it is very low, the tablet will be
switched off automatically.
2.2 Power on/off
2.2.1 Power on
Press [POWER] to turn the tool on.
Note: If it is the first time you have used this tool or the tool remains idle for a
long period of time, the tool could fail to turn on. Please charge the tool for a minimum
of 5 minutes and attempt to turn on again.
2.2.2 Power off
Press [POWER] for 3 seconds, an option menu will pop up on the screen. Tap
Power off to turn the tool off.

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2.3 Basic Gestures
Single-tap: To select an item or launch a program.
Double-tap: To zoom in so that the text on a webpage appears in a
column that fits your device’s screen.
Long press: Tap and hold on the current interface or area until a
contextual menu pops up on the screen, and then release it.
Slide: To jump to different pages.
Drag: Tap the application icon and drop it to other location.
Spread apart/pinch together: To zoom in manually, place two
fingers on the screen and then spread them apart. To zoom out,
place two fingers apart on the screen and then pinch them together.
2.4 Screen Layout
There are five on-screen buttons available on the bottom of the screen.
BACK Tap it to return to the previous screen.
HOME Tap it to navigate to the Android’s home screen.
Recent Apps Tap it to view the recently launched applications.
Screenshot Tap it to capture the current screen.
2.5 Adjust Brightness
Note: Reducing the brightness of the screen is helpful to conserve the battery
power.
1. On the home screen, tap Settings -> Display -> Brightness level.