Launch X431 V User manual

Version: V1.00.000
Revised date: 11-16-2020
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.

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Copyright Information
Copyright © 2020 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 vehicleshall 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 sametime. 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 .......................................................................2
1.3.1 Display Tablet....................................................................................3
1.3.2 VCI (Only applies to 12V cars) ..........................................................4
1.4 TECHNICAL PARAMETERS...........................................................................5
2 INITIAL USE....................................................................................................7
2.1 CHARGING THE TABLET ..............................................................................7
2.2 POWER ON/OFF..........................................................................................7
2.2.1 Power on...........................................................................................7
2.2.2 Power off...........................................................................................7
2.3 BASIC GESTURES.......................................................................................8
2.4 SCREEN LAYOUT........................................................................................8
2.5 ADJUST BRIGHTNESS .................................................................................8
2.6 SET STANDBY TIME....................................................................................9
2.7 CHANGE SYSTEM LANGUAGE......................................................................9
3 NETWORK SETUP .......................................................................................10
3.1 CONNECT TO A WLAN NETWORK..............................................................10
3.2 DISCONNECT FROM A WLAN NETWORK....................................................10
4 GETTING STARTED .....................................................................................11
4.1 DIAGNOSIS FLOWCHART...........................................................................11
4.2 REGISTER &DOWNLOAD DIAGNOSTIC SOFTWARE.....................................11
4.3 JOB MENU ...............................................................................................14
4.4 DIAGNOSTICS TOOLBAR............................................................................16
4.5 CONNECTIONS .........................................................................................16
4.5.1 Preparation .....................................................................................16

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4.5.2 DLC location ...................................................................................16
4.5.3 Vehicle connection..........................................................................17
4.6 COMMUNICATION SETUP...........................................................................18
4.7 DIAGNOSTIC TROUBLE CODES (DTCS)......................................................18
5 DIAGNOSIS...................................................................................................21
5.1 INTELLIGENT DIAGNOSIS...........................................................................21
5.2 LOCAL DIAGNOSIS....................................................................................25
5.2.1 Health Report (Quick Test)..............................................................27
5.2.2 System Scan...................................................................................30
5.2.3 System Selection ............................................................................30
5.3 REMOTE DIAGNOSIS.................................................................................39
5.3.1 Interface Layout ..............................................................................40
5.3.2 Add Friends.....................................................................................41
5.3.3 Start Instant Messaging...................................................................43
5.3.4 Launch Remote Diagnosis (Device-To-Device)...............................44
5.3.5 Launch Remote Diagnosis (Device-To-PC).....................................47
5.4 DIAGNOSTIC HISTORY ..............................................................................50
6 SPECIAL (RESET) FUNCTION.....................................................................52
6.1 OIL RESET SERVICE.................................................................................53
6.2 ELECTRONIC PARKING BRAKE RESET........................................................53
6.3 STEERING ANGLE CALIBRATION ................................................................54
6.4 ABS BLEEDING ........................................................................................54
6.5 TIRE PRESSURE MONITOR SYSTEM RESET................................................54
6.6 GEAR LEARNING ......................................................................................54
6.7 IMMO SERVICE........................................................................................55
6.8 INJECTOR CODING....................................................................................55
6.9 BATTERY MAINTENANCE SYSTEM RESET...................................................56
6.10 DIESEL PARTICULATE FILTER (DPF) REGENERATION...............................56
6.11 ELECTRONIC THROTTLE POSITION RESET ...............................................56
6.12 GEARBOX MATCHING .............................................................................57

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6.13 AFS (ADAPTIVE FRONT-LIGHTING SYSTEM)RESET..................................57
6.14 SUNROOF INITIALIZATION........................................................................57
6.15 SUSPENSION CALIBRATION.....................................................................57
7 SOFTWARE UPDATE...................................................................................58
7.1 UPDATE DIAGNOSTIC SOFTWARE &APP...................................................58
7.2 SET FREQUENTLY USED SOFTWARE..........................................................59
7.3 RENEW SUBSCRIPTION.............................................................................59
8 FEEDBACK...................................................................................................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 MY NEWS ................................................................................................65
9.7 MY ORDER ..............................................................................................65
9.8 SUBSCRIPTION RENEWAL CARD................................................................65
9.9 PROFILE ..................................................................................................65
9.10 CHANGE PASSWORD ..............................................................................66
9.11 SETTINGS ..............................................................................................66
9.11.1 Units of Measurement ...................................................................66
9.11.2 Shop Information...........................................................................66
9.11.3 Printer Set .....................................................................................66
9.11.4 Orientation.....................................................................................68
9.11.5 Clear Cache ..................................................................................68
9.11.6 About.............................................................................................68
9.11.7 Login/Logout..................................................................................68
10 OTHERS......................................................................................................69
10.1 SYNCHRONIZATION.................................................................................69

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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 V 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 the 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.
Moreover, taking advantage of the mobile Internet, it also integrates One-click
Update, Remote Diagnosis and Repair Data, which helps to diagnose vehicle
issues more efficiently, and greatly increase customer’s retention and boost
shop revenue.
It supports the following functions and advantages:
Intelligent Diagnosis: 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 Diagnosis: 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 Diagnosis: 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 can be done.
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 the necessity of starting from scratch.
Diagnostic 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.

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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
Qt.
1
Display tablet
Indicates the test result.
1
2
VCI device
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
Cigarette lighter
cable
To supply power to the non-16pin
connector from the vehicle’s cigarette
lighter receptacle.
(Optional)
7
Battery clamps
cable
To supply power to the non-16pin
connector from the vehicle’s battery.
(Optional)
8
USB/Charging
cable
Connect the power adaptor to charge
the tablet.
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)
1.3 Components & Controls
There are two main components to the X-431 V V4.0 system:

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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.
1
Slot for VCI device
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 +/- Key
To adjust the volume.

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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 Camera
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 (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
Bluetooth.
It is pre-installed in the docking 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 it is not in use, please insert it into the slot to avoid loss.

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1
OBD-16 diagnostic
connector
To connect on vehicle’s OBD II DLC(Data Link
Connector) socket.
2
Mode LED
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.
1.4 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
Camera
Front-facing 2.0MP camera + Rear-facing

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5.0MP camera
Working temperature
0℃~ 50℃
Storage temperature
-20℃~ 70℃
VCI device:
Working voltage
9 ~18V
Working temperature
0℃~ 50℃
Relative humidity
20% ~ 90%

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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 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.

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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.
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.

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3 Network Setup
Note: If you don’t need to use WLAN for a while, you can turn it off to conserve
battery life.
The tablet has built-in WLAN module 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.
3.1 Connect to a WLAN Network
1. On the home screen, tap Settings -> Network & Internet -> WLAN.
2. Slide the WLAN 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 WLAN connection is complete.
Once it is connected successfully, tap the desired network from the list to view
its name, link speed, security type, IP address etc.
When this tablet is in range, it will connect to the previously linked network
automatically.
3.2 Disconnect from a WLAN 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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4 Getting Started
4.1 Diagnosis Flowchart
For new users, please follow the operation chart shown below to get familiar with
and start using this tool.
Tap “Diagnostic”
Select vehicle
Select test system
Select test function
Select diagnostic
software version
Tap “Login” to
register
Is connector
activated ?
No
Tap “Update” to
update software
Yes
…… (Refer to
Chapter 4.2)
Register & Activate
OK
4.2 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 Ato proceed.)
(If you have registered to be a member, go to Bto login the system directly.)
(In case you forgot password, refer to Cto 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: