Launch X-431 PROS V4.0 User manual

Version: V1.00.000
Revised date: 06-11-2021
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 PROS V4.0 User Manual
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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.

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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
the engine is running.
 Put blocks in front of the drive wheels and never leave the vehicle unattended

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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.

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TABLE OF CONTENTS
1 Introduction .......................................................................................... 1
1.1 Product Profile .......................................................................................... 1
1.2 Package List ............................................................................................. 2
1.3 Components & Controls ........................................................................... 3
1.3.1 Display Tablet .................................................................................... 3
1.3.2 VCI Connector (Only applies to 12V cars) ......................................... 4
1.4 Technical Parameters ............................................................................... 5
2 Initial Use .............................................................................................. 7
2.1 Charging ................................................................................................... 7
2.2 Power on/off ............................................................................................. 7
2.3 Basic Gestures ......................................................................................... 7
2.4 Screen layout ........................................................................................... 8
2.5 Adjust brightness ...................................................................................... 8
2.6 Set standby time ....................................................................................... 8
2.7 Change System Language ....................................................................... 9
2.8 Network Setup .......................................................................................... 9
2.8.1 Connect to a Wi-Fi network ............................................................... 9
2.8.2 Disconnect from a Wi-Fi network....................................................... 9
3 Getting Started .................................................................................... 10
3.1 Diagnosis Flowchart ............................................................................... 10
3.2 Register & Download Diagnostic Software ............................................. 10
3.3 Job menu ............................................................................................... 13
3.4 Diagnostics toolbar ................................................................................. 14
4 Connections ....................................................................................... 16
4.1 Preparation ............................................................................................. 16
4.2 Vehicle connection ................................................................................. 16
5 Diagnosis............................................................................................ 19
5.1 Intelligent Diagnosis ............................................................................... 19
5.2 Local Diagnosis ...................................................................................... 23

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5.2.1 Health Report (Quick Test) .............................................................. 25
5.2.2 System Scan ................................................................................... 28
5.2.3 System Selection ............................................................................ 28
5.3 Remote Diagnosis .................................................................................. 37
5.3.1 Interface Layout .............................................................................. 38
5.3.2 Add Friends ..................................................................................... 39
5.3.3 Start Instant Messaging ................................................................... 41
5.3.4 Launch Remote Diagnosis (Device-To-Device) ............................... 42
5.3.5 Launch Remote Diagnosis (Device-To-PC) ..................................... 45
5.4 Feedback ............................................................................................... 48
5.5 Diagnostic History................................................................................... 48
6 Service (Reset) Function ..................................................................... 50
6.1 Oil Reset Service .................................................................................... 50
6.2 Electronic Parking Brake Reset .............................................................. 51
6.3 Steering Angle Calibration ...................................................................... 51
6.4 ABS Bleeding ......................................................................................... 51
6.5 Tire Pressure Monitor System Reset ...................................................... 51
6.6 Gear Learning ........................................................................................ 51
6.7 IMMO Service ......................................................................................... 52
6.8 Injector Coding ....................................................................................... 52
6.9 Battery Maintenance System Reset........................................................ 52
6.10 Diesel Particulate Filter (DPF) Regeneration ........................................ 52
6.11 Electronic Throttle Position Reset ......................................................... 53
6.12 Gearbox Matching ................................................................................ 53
6.13 AFS (Adaptive Front-lighting System) Reset ........................................ 53
6.14 Sunroof Initialization ............................................................................. 53
6.15 Suspension Calibration ......................................................................... 53
6.16 IMMO Programming ............................................................................. 54
7 Software Update .................................................................................. 55
7.1 Update Diagnostic Software & APP ........................................................ 55
7.2 Set Frequently Used software ................................................................ 56
7.3 Renew Subscription................................................................................ 56

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8 Add-on Modules .................................................................................. 59
8.1 ADAS (Calibration) ................................................................................. 59
8.2 TPMS ..................................................................................................... 60
8.3 BST360 (Battery Tester) ......................................................................... 61
8.4 Videoscope............................................................................................. 61
9 User Info ............................................................................................. 62
9.1 My Report ............................................................................................... 62
9.2 VCI ......................................................................................................... 64
9.3 VCI Management ................................................................................... 64
9.4 Activate VCI............................................................................................ 64
9.5 Firmware Fix........................................................................................... 65
9.6 Profile ..................................................................................................... 65
9.7 Change password................................................................................... 65
9.8 Settings .................................................................................................. 65
9.8.1 Units of Measurement ..................................................................... 65
9.8.2 Shop Information ............................................................................. 66
9.8.3 Printer Set ....................................................................................... 66
9.8.4 Orientation ...................................................................................... 67
9.8.5 Clear Cache .................................................................................... 67
9.8.6 About ............................................................................................... 67
9.8.7 Login/Logout ................................................................................... 68
9.9 Diagnostic Software Clear ...................................................................... 68
10 Others ............................................................................................... 69
10.1 Synchronization .................................................................................... 69
10.1.1 Connect to PC ............................................................................... 69
10.1.2 Run on PC .................................................................................... 69
10.1.3 Install an application ...................................................................... 69
10.2 Clear Cache ......................................................................................... 69
11 FAQ ................................................................................................... 70

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1 Introduction
1.1 Product Profile
X-431 PROS V4.0 adopts a higher performance-price ratio display tablet, which
is equipped with Android operating system and 8” HD capacitive touch screen. It
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 communication 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 has the following features:
 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,
eliminating guesswork and step-by-step manual menu selection.
 Local Diagnose: Follow the on-screen prompts to start diagnostic session
step by step.
 Remote Diagnose: This option aims to help repair shops or technicians
launch instant messaging and remote diagnosis, making the repair job getting
fixed faster.
 Service Function: All kinds of common maintenance and reset items including
Oil Reset Service, Electronic Parking Brake Reset, Steering Angle Calibration,
ABS Bleeding, TPMS (Tire Pressure Monitor System) Reset, Gear Learning,
IMMO Service, Injector Coding, Battery Maintenance System, Diesel
Particulate Filter (DPF) Regeneration, Electronic Throttle Position Reset,
Gearbox Matching, AFS (Adaptive Front-lighting System) Reset, Sunroof
Initialization, Suspension Calibration etc.
 One-click Update: Lets you update your diagnostic software online.
 ADAS calibration: Allows you to perform Advanced Driver Assistance System
(ADAS) calibration operations. This function needs to be activated before
normal use and only works with the specific ADAS calibration tool.

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 TPMS: Configures the tool as a professional Tire Pressure Monitoring
System (TPMS) service tool. It needs to work with the TSGUN device (sold
separately) to perform all kinds of various TPMS functions.
 Mall: Enables you to subscribe some extra software or service functions that
are not integrated in the tool 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.
 Vehicle Coverage: Quick dial to view the vehicle models that the tool covers.
 Add-on modules (Optional): BST 360 Battery Tester and Videoscope are
available as add-on modules, extending the functions of the tool.
1.2 Package List
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. 1
6 USB/Charging
cable
Connect the power adaptor to charge
the tablet. 1

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7 Cigarette lighter
cable
To supply power to the non-16pin
connector from the vehicle’s cigarette
lighter receptacle.
(Optional)
8 Battery clamps
cable
To supply power to the non-16pin
connector from the vehicle’s battery. (Optional)
9 OBD I adaptor box
For connecting th
e 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)
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 connector – 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 connector and then output the test
result.

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1 Slot for VCI
connector
For housing the VCI.
The VCI is pre-installed in this slot on the top of
the display tablet. Use the hand to press the
VCI once, it will be automatically ejected from
the docking slot.
When the VCI is not in use, please insert it into
this slot to avoid loss.
2
Ambient light
sensor
3
Front camera
4
VOLUME +/
-
K
ey
To adjust the volume.
5 POWER Key
In Off mode, press it for 3 seconds to turn the
tablet on.
In On mode:
• Press it to wake it up if the screen is black.
• Press it to enter sleep mode if the screen
lights up.
• Press it for 3 seconds to turn it off.
• Press it for 8 seconds to perform forced
shutdown.
6
LCD Screen
7
Rear
C
ame
ra
8
Audio
Speakers
9 USB/Charging
Port
• To connect to AC outlet for charging.
• To connect to PC for data exchange.
1.3.2 VCI Connector (Only applies to 12V cars)
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

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Bluetooth.
It is pre-installed in the docking slot on the back of the display tablet. Use the
hand to press the VCI once, it will be automatically ejected from the docking slot.
When it is not in use, please insert it into the slot to avoid loss.
1
OBD
-
16
diagnostic
connector To connect on vehicle’s OBD II DLC socket.
2 Mode indicator
 It illuminates red when the VCI connector is
connected to the vehicle’s DLC.
 Blue indicates the VCI connector is working
in wireless (BT) communication mode.
1.4 Technical Parameters
Display tablet:
Operating system Android
Memory 3GB
Storage 32GB
Screen 8 inch high-definition capacitive touch screen
with a resolution of 1280 x 800 pixels

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Camera Front-facing 2.0MP camera + Rear-facing
5.0MP camera
Working temperature 0℃ ~ 50℃
Storage temperature -20 ~ ℃70℃
VCI connector:
Working voltage 9 ~18V
Working temperature 0℃ ~ 50℃
Relative humidity 20% ~ 90%

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2 Initial Use
2.1 Charging
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
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.
Press [POWER] for 3 seconds, an option menu will pop up on the screen. Tap
“Power off” to turn the tool off.
2.3 Basic Gestures
Single-tap: To select an item or launch a program.

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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 four 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.
2. Drag the slider to adjust it.
2.6 Set Standby Time
If no activities are made within the defined standby period, the screen will be
locked automatically and the system enters sleep mode to save power.

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1. On the home screen, tap Settings -> Display -> Advanced -> Sleep.
2. Choose the desired sleep time.
2.7 Change System Language
The tool supports multiple system languages. To change the language of the
tool, please do the following:
1. On the home screen, tap Settings -> System -> Language & input ->
Languages.
2. Tap Add a language, and then choose the desired language from the list.
3. Tap and hold the desired language and drag it to the top of the screen and
then release it, the system will change into the target language.
2.8 Network Setup
The tablet has built-in Wi-Fi that can be used to get online. Once you’re online,
you can register your tool, surf the Internet, get apps, send email, launch the
remote diagnosis, and check for software updates etc.
2.8.1 Connect to a Wi-Fi network
1. On the home screen, tap Settings -> Network & Internet -> WLAN.
2. Slide the Wi-Fi switch to ON, the tablet starts searching for available wireless
networks.
3. Select a wireless network,
 If the chosen network is open, the tablet will connect automatically.
 If the selected network is encrypted, a network password will need to be
entered.
4. When Connected appears, it indicates the Wi-Fi connection is complete.
Note: When Wi-Fi is not required, this should be disabled to conserve battery
power.
2.8.2 Disconnect from a Wi-Fi network
1. On the home screen, tap Settings -> Network & Internet -> WLAN.
2. Tap the network with a Connected status, then tap Disconnect.

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3 Getting Started
3.1 Diagnosis Flowchart
For new users, please follow the operation chart shown below to get familiar with
and start using this tool.
3.2 Register & Download Diagnostic Software
Tap the application icon on the home screen to launch it, and then tap “Login” to
enter the login interface of diagnosis software.

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(If you are a new user, follow A to proceed.)
(If you have registered to be a member, go to B to login the system directly.)
(In case you forgot password, refer to C to reset a new password.)
A. If you are a new user, tap “New Registration” to enter registration page.
Enter the information in each field (Items with * must be filled). After inputting,
tap “Register”, a screen similar to the following will appear:

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Input the Serial Number and Activation Code, which can be found in the
password envelope.
Note: To exit and activate it later, tap “Skip”. In this case, please activate the VCI
by tapping “User Info” -> “Activate VCI”. For details, please refer to Chapter 9.4
Activate VCI.
Tap “Activate” to finish your registration.
Tap “Yes” to navigate to the update center to update all available software. Tap
“No” to ignore it. In this case, follow Chapter 7 to check for updates.

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After the registration is successfully complete, the wireless communication
between the tablet and the VCI connector is automatically established and user
has no need to configure it again.
B. If you have registered to be a member, input your name and password, and
then tap the “Login” button to enter the main menu screen directly.
Note: The tablet has an auto-save function. Once the username and password are
correctly entered, the system will automatically store it. Next time you login the system,
you will not be asked to input the account manually.
C. If you forgot the password, tap “Retrieve password” and then follow
on-screen instructions to set a new password.
3.3 Job menu
It mainly includes the following items:
Name
Description
Intelligent
Diagnose
• Obtain vehicle data from the cloud server to perform
quick test via reading VIN, to avoid various defects
resulting from step-by-step menu selection.
• Check the historical repair records online.
Local
Diagno
s
e
To diagnose a vehicle manually.
TPMS Configure the tool as a professional Tire Pressure
Monitoring System (TPMS) service tool.
ADAS Perform ADAS (Advanced Driver Assistance System)
calibration operations.