Launch X-431 PRO Series User manual

Version: V1.00.001
Revised date: 10-15-2019
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 PRO Series User Manual
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Copyright Information
Copyright © 2019 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 LAUNCHApproved 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.
X-431 PRO 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 X-431 PRO
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 Features.................................................................................................... 1
1.3 Knowledge of X-431 PRO......................................................................... 2
1.3.1 X-431 PRO V3.0 Tablet.....................................................................2
1.3.1 X-431 PRO V4.0 Tablet.....................................................................3
1.3.2 X-431 PRO V3.0 VCI Connector (Only applies to 12V cars) ............ 5
1.3.2 X-431 PRO V4.0 VCI Connector (Only applies to 12V cars) ............ 6
1.4 Technical Parameters............................................................................... 6
1.5 Package List.............................................................................................. 8
2 Preparations.................................................................................................. 10
2.1 Charging the tablet..................................................................................10
2.2 Using your battery............................................................................10
2.3 Power on/off............................................................................................10
2.3.1 Power on.......................................................................................... 10
2.3.2 Power off.......................................................................................... 10
2.4 Tips on finger operations ........................................................................ 11
2.5 Screen layout (For X-431 PRO V3.0 Tablet).......................................... 11
2.5 Screen layout (For X-431 PRO V4.0 Tablet).......................................... 11
2.6 Adjust brightness..................................................................................... 12
2.7 Set standby time .....................................................................................12
3 Network Setup ................................................................................................ 1
3.1 Connect to a Wi-Fi network....................................................................... 1
3.2 Disconnect from a Wi-Fi network.............................................................. 1
4 Initial Use......................................................................................................... 2
4.1 Diagnosis Flowchart.................................................................................. 2
4.2 User Registration, VCI Activation & Diagnostic Software Download........2
4.2.1 User registration................................................................................ 2
4.2.2 Job menu........................................................................................... 6
4.2.3 Diagnostics toolbar............................................................................ 7
4.3 Connections.............................................................................................. 7
4.3.1 Preparation........................................................................................ 7
4.3.2 DLC location...................................................................................... 8

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4.3.3 Vehicle connection............................................................................. 8
4.4 Communication Setup............................................................................... 9
5 Diagnosis........................................................................................................11
5.1 Intelligent Diagnosis................................................................................ 11
5.2 Local Diagnosis....................................................................................... 16
5.2.1 Health Report (Quick Test).............................................................. 19
5.2.2 System Scan....................................................................................21
5.2.3 System Selection.............................................................................22
5.3 Remote Diagnosis................................................................................... 31
5.3.1 Interface Layout...............................................................................32
5.3.2 Add Friends...................................................................................... 33
5.3.3 Start Instant Messaging...................................................................35
5.3.4 Launch Remote Diagnosis (Device-To-Device) ..............................36
5.3.5 Launch Remote Diagnosis (Device-To-PC) ....................................39
5.4 How to feedback diagnostic logs?.......................................................... 42
5.5 How to view diagnostic history?.............................................................. 43
6 Special (Reset) Function.............................................................................. 45
6.1 Oil Reset Service ....................................................................................46
6.2 Electronic Parking Brake Reset.............................................................. 46
6.3 Steering Angle Calibration......................................................................46
6.4 ABS Bleeding.......................................................................................... 46
6.5 Tire Pressure Monitor System Reset...................................................... 47
6.6 Gear Learning.........................................................................................47
6.7 IMMO Service .........................................................................................47
6.8 Injector Coding........................................................................................ 48
6.9 Battery Maintenance System Reset ....................................................... 48
6.10 Diesel Particulate Filter (DPF) Regeneration........................................ 49
6.11 Electronic Throttle Position Reset.........................................................49
7 Software Update ........................................................................................... 50
7.1 Update Diagnostic Software & APP........................................................50
7.2 Set Frequently Used software................................................................. 51
7.3 Renew Subscription................................................................................ 51
8 golo Business Manager............................................................................... 54

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9 User Info........................................................................................................ 56
9.1 My Report................................................................................................ 56
9.2 VCI .......................................................................................................... 59
9.3 VCI Management.................................................................................... 59
9.4 Immobilizer Programmer......................................................................... 59
9.5 Activate VCI ............................................................................................59
9.6 Firmware Fix ........................................................................................... 60
9.7 Profile...................................................................................................... 60
9.8 Change password................................................................................... 61
9.9 Settings ................................................................................................... 61
9.9.1 Units of Measurement ..................................................................... 61
9.9.2 Print Information.............................................................................. 61
9.9.3 Launch Printer Set...........................................................................61
9.9.4 About................................................................................................ 64
9.9.5 Login/Exit from current account....................................................... 64
10 Others.......................................................................................................... 65
10.1 Synchronization.....................................................................................65
10.1.1 Connect to PC............................................................................... 65
10.1.2 Run on PC.....................................................................................65
10.1.3 Install an application...................................................................... 65
10.2 Clear Cache..........................................................................................65
11 FAQ............................................................................................................... 66

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1 Introduction
1.1 Product Profile
X-431 PRO is a new Android-based vehicle trouble diagnostic device developed
for internet applications. 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 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, Repair Data and golo
Business Manager, which helps to diagnose vehicle issues more efficiently, and
greatly increase customer’s retention and boost shop revenue.
X-431 PRO adopts a higher performance-price ratio tablet computer, which is
equipped with Android operating system and 8”HD capacitive touch screen.
1.2 Features
1. Diagnose:
Smart 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

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analysis and troubleshooting.
golo Business Manager: On this platform, you can provide nearby car owners
with attentive service to develop new business opportunities, manage
technicians and golo customers more efficiently, monitor customer’s vehicle
running status in real-time manner and perform remote assistance anywhere
etc. It is very helpful to increase productivity and boost shop revenue.
Vehicle Coverage: Quick dial to view the vehicle models that the tool covers.
2. Wi-Fi connection is supported.
3. Web browser: Users can make online search and visit any website.
1.3 Knowledge of X-431 PRO
There are two main components to the X-431 PRO 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 X-431 PRO V3.0 Tablet
The handset 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.
Fig. 2-1 X-431 PRO handset

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1
VOLUME +/- Key
To adjust the volume.
2
POWER Key
In Off mode, press it for 3 seconds to turn the
handset on.
In On mode:
Press it to activate the LCD if the LCD is off.
Press it to turn off the LCD if the LCD lights up.
Press it for 3 seconds to turn it off.
Press it for 8 seconds to perform forced
shutdown.
3
LCD Screen
4
Rear Camera
5
USB/Charging
Port
To connect to AC outlet for charging.
To connect to PC for data exchange.
6
Speakers
7
Microphone
1.3.1 X-431 PRO V4.0 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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Fig. 1-1 Display tablet
1
Microphone
2
USB/Charging
Port
To connect to AC outlet for charging.
To connect to PC for data exchange.
3
POWER Key
In Off mode, press it for 3 seconds to turn the
handset 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.
4
LCD Screen
5
Slot for VCI device
6
VCI device
7
Rear Camera
8
Speakers

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1.3.2 X-431 PRO V3.0 VCI Connector (Only applies to 12V cars)
The VCI connector 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.
Fig. 1-2 VCI connector
1
OBD-16 diagnostic
connector
To connect on vehicle’s OBD II DLC.
2
Power indicator
It lights up while the connector is plugged into
the vehicle’s DLC.
3
Bluetooth/USB
communication
indicator
It indicates Bluetooth mode if the connector is
energized and illuminates blue (default mode).
It illuminates red when the connector is
connected to the diagnostic tool via USB cable
(The USB port is temporarily disabled).
4
ECU communication
indicator
It flashes when the connector is communicating
with the vehicle.

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5
USB port
This port is temporarily disabled and reserved for
subsequent function extension.
1.3.2 X-431 PRO V4.0 VCI Connector (Only applies to 12V cars)
Fig. 1-2 VCI device
1
OBD-16 diagnostic
connector
To connect on vehicle’s OBD II DLC.
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.
1.4 Technical Parameters
X-431 PRO V3.0 tablet
Operating system
Android

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Memory
2GB
Storage
16GB
Screen
8 inch high-definition capacitive touch screen
with a resolution of 1280 x 800 pixels
Camera
Rear-facing 5.0MP camera
Connectivity
Wi-Fi (802.11 b/g/n)
Bluetooth 4.0
Working temperature
0℃~ 50℃
Storage temperature
-20℃~ 70℃
X-431 PRO V4.0 tablet
Operating system
Android
Memory
2GB
Storage
32GB
Screen
8 inch high-definition capacitive touch screen
with a resolution of 1280 x 800 pixels
Camera
Rear-facing 5.0MP camera
Connectivity
Wi-Fi (802.11 b/g/n)
Bluetooth 4.0
Working temperature
0℃~ 50℃
Storage temperature
-20℃~ 70℃
X-431 PRO V3.0 VCI device:
Working voltage
9 ~18V

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Average working current
≤128mA
Standby current
≤50mA
Working temperature
0℃~ 50℃
Storage humidity
<80%
Working humidity
<60%
X-431 PRO V4.0 VCI device:
Working voltage
9 ~18V
Working temperature
0℃~ 50℃
Relative humidity
20% ~ 90%
1.5 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 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

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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 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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2 Preparations
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.
2.2 Using your battery
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.
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.
While the tablet has low battery, a beep will sound. If it is very low, the tablet
will be switched off automatically.
2.3 Power on/off
2.3.1 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.
2.3.2 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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2.4 Tips on finger operations
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.
2.5 Screen layout (For X-431 PRO V3.0 Tablet)
There are four on-screen buttons available on the bottom of the screen.
BACK
Tap to return to the previous screen.
HOME
Tap to navigate to the Android’s home screen.
Recent Apps
Tap to view the recently launched applications.
Screenshot
Tap to capture the current screen.
2.5 Screen layout (For X-431 PRO V4.0 Tablet)
There are five on-screen buttons available on the bottom of the screen.
HOME
Tap it to navigate to the Android’s home screen.
Recent Apps
Tap it to view the recently launched applications.

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VCI
Connection Status
Shows the connection status of the VCI device.
Screenshot
Tap it to capture the current screen.
BACK
Tap it to return to the previous screen.
2.6 Adjust brightness
Tips: 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.
2.7 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 > Sleep.
2. Choose the desired sleep time.

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3 Network Setup
*Note: If you don’t need to use Wi-Fi for a while, you can turn it off to conserve battery
life.
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.
3.1 Connect to a Wi-Fi network
1. On the home screen, tap Settings > 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.
Once it is connected successfully, tap the Wi-Fi network from the list to view its
name, link speed, security type, IP address etc.
When this tool is in range, it will connect to the previously linked network
automatically.
3.2 Disconnect from a Wi-Fi network
1. On the home screen, tap Settings > WLAN.
2. Tap the network with a Connected status, then tap “Disconnect”.