LAUNCH TECH X-431 PRO V4.0 User manual

LAUNCH
X-431 PRO V4.0 User Manual
i
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 LAUNCH Approved Products by LAUNCH.
Trademark Information
LAUNCH is a registered trademark of LAUNCH TECH CO., LTD. (also called
LAUNCH for short) 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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X-431 PRO V4.0 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.
 The 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.
 Do not delete unknown files or change the name of files or directories that
were not created by you, otherwise the tool software might fail to work.
 Be aware that accessing network resources can leave the tool vulnerable to
computer viruses, hackers, spyware, and other malicious activities that might
damage your device, software or data. It is your responsibility to ensure that
you have adequate protection in the forms of firewalls, antivirus software, and
anti-spyware software and keep such software up to date.
Precautions on Using X-431 PRO V4.0
Before using this test equipment, please read the following safety information
carefully.
 Always perform automotive testing in a safe environment.
 If the VCI device remains unused 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.

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X-431 PRO V4.0 User Manual
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 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
while testing.
 Keep the test equipment 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 test equipment 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 test equipment 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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X-431 PRO V4.0 User Manual
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TABLE OF CONTENTS
1 INTRODUCTIONS ......................................................................................... 1
1.1 P
RODUCT
P
ROFILE
................................................................................... 1
1.2 F
EATURES
................................................................................................ 1
1.3 KNOWLEDGE OF X-431 PRO V4.0 ...........................................................2
1.3.1 X-431 PRO V4.0 (V2.0) handset ....................................................2
1.3.1 X-431 PRO V4.0 (V3.0) handset ..................................................... 4
1.3.2 VCI device (Only applies to 12V cars) ............................................. 5
1.4 T
ECHNICAL
P
ARAMETERS
......................................................................... 6
1.5 P
ACKAGE
L
IST
.......................................................................................... 7
1.5.1 X-431 PRO V4.0 (V2.0) .................................................................. 7
1.5.2 X-431 PRO V4.0 (V3.0) ..................................................................7
2 PREPARATIONS ........................................................................................... 9
2.1 CHARGING X-431 PRO V4.0 ................................................................... 9
2.2 U
SING YOUR BATTERY
.............................................................................. 9
2.3
P
OWER ON
/
OFF
........................................................................................ 9
2.3.1 Power on ......................................................................................... 9
2.3.2 Power off ......................................................................................... 9
2.4 T
IPS ON FINGER OPERATIONS
................................................................... 9
2.5
S
CREEN LAYOUT
.................................................................................... 10
2.6
A
DJUST BRIGHTNESS
.............................................................................. 10
2.7
S
ET STANDBY TIME
................................................................................. 10
3 NETWORK SETUP ..................................................................................... 11
3.1
C
ONNECT TO A
W
I
-F
I NETWORK
.............................................................. 11
3.2
D
ISCONNECT FROM A
W
I
-F
I NETWORK
..................................................... 11
4 HOW TO DIAGNOSE .................................................................................. 12
4.1
D
IAGNOSIS
F
LOWCHART
......................................................................... 12
4.2
I
NITIAL
U
SE
............................................................................................ 12
4.2.1 User registration ............................................................................ 12
4.2.2 Diagnostic software layout ............................................................ 16
4.2.3 Job menu ...................................................................................... 16

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4.2.4 Diagnostics toolbar ........................................................................ 17
4.3
C
ONNECTIONS
....................................................................................... 17
4.3.1 Preparation.................................................................................... 17
4.3.2 DLC location ................................................................................. 18
4.3.3 Vehicle connection ........................................................................ 18
4.4
C
OMMUNICATION
S
ETUP
......................................................................... 20
4.5
S
TART
D
IAGNOSTICS
.............................................................................. 20
4.5.1 Health Report (Quick Test) ............................................................ 22
4.5.2 System Scan ................................................................................. 24
4.5.3 System Selection .......................................................................... 25
5 SPECIAL (RESET) FUNCTION ................................................................... 34
5.1
O
IL
R
ESET
S
ERVICE
............................................................................... 35
5.2
E
LECTRONIC
P
ARKING
B
RAKE
R
ESET
...................................................... 35
5.3 S
TEERING
A
NGLE
C
ALIBRATION
.............................................................. 35
5.4
ABS B
LEEDING
...................................................................................... 35
5.5
T
IRE
P
RESSURE
M
ONITOR
S
YSTEM
R
ESET
.............................................. 36
5.6 G
EAR
L
EARNING
.................................................................................... 36
5.7
IMMO S
ERVICE
...................................................................................... 36
5.8
I
NJECTOR
C
ODING
.................................................................................. 37
5.9
B
ATTERY
M
AINTENANCE
S
YSTEM
R
ESET
................................................. 37
5.10
D
IESEL
P
ARTICULATE
F
ILTER
(DPF) R
EGENERATION
............................. 38
6.11 E
LECTRONIC
T
HROTTLE
P
OSITION
R
ESET
............................................. 38
6 REMOTE DIAGNOSIS ................................................................................ 39
6.1
I
NTERFACE LAYOUT
................................................................................ 39
6.2 H
OW TO LAUNCH A REMOTE DIAGNOSIS
? ................................................. 40
7 SOFTWARE UPDATE ................................................................................. 41
7.1
U
PDATE
D
IAGNOSTIC
S
OFTWARE
& APP ................................................. 41
7.2 R
ENEW
S
UBSCRIPTION
........................................................................... 42
8 MAINTENANCE HELP ................................................................................ 44
9 PERSONAL CENTER ................................................................................. 45
9.1
M
Y REPORT
........................................................................................... 45

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9.2 M
Y CONNECTOR
..................................................................................... 46
9.3
A
CTIVATE CONNECTOR
........................................................................... 46
9.4
F
IRMWARE FIX
........................................................................................ 46
9.5
F
EEDBACK
............................................................................................. 46
9.6
M
Y ORDER
............................................................................................. 46
9.7
I
NQUIRE SUBSCRIPTION RENEWAL CARD STATUS
...................................... 47
9.8
P
ROFILE
................................................................................................ 47
9.9
C
HANGE PASSWORD
.............................................................................. 47
9.10
S
ETTINGS
............................................................................................ 47
9.10.1 Units of measurement ................................................................. 47
9.10.2 Print information .......................................................................... 47
9.10.3 Launch printer connection ........................................................... 48
9.10.4 About ........................................................................................... 49
9.10.5 Exit .............................................................................................. 49
10 OTHERS .................................................................................................... 50
10.1
E
MAIL
.................................................................................................. 50
10.1.1 Configure an email account ......................................................... 50
10.1.2 Add an email account .................................................................. 50
10.2
B
ROWSER
............................................................................................ 50
10.2.1 Open browser.............................................................................. 50
10.2.2 Download files ............................................................................. 51
10.3 S
YNCHRONIZATION
............................................................................... 51
10.3.1 Connect to PC ............................................................................. 51
10.3.2 Run on PC .................................................................................. 51
10.3.3 Install an application .................................................................... 52
10.4
C
LEAR
C
ACHE
...................................................................................... 52
11 FAQ ........................................................................................................... 53

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X-431 PRO V4.0 User Manual
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1 Introductions
1.1 Product Profile
X-431 PRO MINI is a stylish Android-based vehicle trouble diagnostic tool. 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 wireless (BT) communication between the VCI device and
the tablet, it achieves full car model and full system vehicle trouble diagnosis,
which includes Reading DTCs, Clearing DTCs, Reading Data Stream, Actuation
Test and Special Functions.
Moreover, it supports WLAN connection, which enables you to surf the Internet,
update the diagnostic software online and perform remote diagnosis etc, getting
your job fixed faster and easier.
1.2 Features
1. Diagnostic Tool:
A. Diagnose
 Diagnose the electronic control system of prevailing vehicle models
covering Asian, European, American and Chinese. Diagnosis functions
include: Read DTCs, Clear DTCs, Read data stream, Special functions
etc.
 Specially designed for Android platform with clear and user-friendly
interface.
B. One-click Update: lets you update your diagnostic software and APK
more efficiently.
C. Repair Data: provides abundant automotive handbook, repair case and
wiring diagrams for reference and retrieval.
D. Remote Diagnosis: configures the tool as an I/M (Instant Messaging)
tool, which enables technicians to exchange repair experience and perform
remote assistance more conveniently.
2. Browser: built-in Wi-Fi module makes surfing on the internet freely.
3. Email: allows you to send and receive emails.
4. Settings: to configure your personalized tablet through it.

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5. Applications: other android based applications can be customized to install
or uninstall.
1.3 Knowledge of X-431 PRO V4.0
There are two main components to the X-431 PRO MINI system: X-431
PRO V4.0 tablet and VCI device.
1.3.1 X-431 PRO V4.0 (V2.0) handset
Fig. 1-1 X-431 PRO V4.0 V2.0 tablet
1 VCI device
2 Charging/Data I/O port T
o connect to the power adaptor/PC for

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X-431 PRO V4.0 User Manual
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charging/data exchange.
3 Rear camera
4 Slot for VCI device For housing the VCI device.
5 POWER/Screen lock
key
In Off mode, press it to turn the tablet on.
In On mode, turn the tablet off with long
press or lock screen with short press.
6 Carry strap
7 Speakers
8 Microphone
9 LCD screen
10 VOLUME +/- Key
To adjust the volume. To print the screen,
hold and press the POWER and VOLUME –
key until a snapshot pops up on the screen.
The captured snapshot is saved in the
“Screenshots” folder.
11 Receiver
12 Front camera
13 Ambient light sensor
14 Earphone Jack

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1.3.1 X-431 PRO V4.0 (V3.0) handset
Fig. 1-1 X-431 PRO V4.0 V3.0 tablet
1 VCI device
2 Charging/Data I/O port
T
o connect to the power adaptor/PC for
charging/data exchange.
3 Rear camera
4 Slot for VCI device For housing the VCI device.
5 Carry strap

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X-431 PRO V4.0 User Manual
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6 Speakers
7 LCD screen
8 POWER/Screen lock
key
In Off mode, press it to turn the tablet on.
In On mode, turn the tablet off with long
press or lock screen with short press.
1.3.2 VCI device (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.

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1.4 Technical Parameters X-431 PRO V4.0 V2.0 tablet:
Operating system Android
Processor Quad core 1.3 GHz
Memory 2GB
Storage 16GB
LCD screen 7 inch with a resolution of 1280 x 720 pixels
Camera Front-facing 2MP camera + rear-
facing 5MP camera
Connectivity  Wi-Fi: WLAN 802.11b/g/n
 Bluetooth: Bluetooth 4.0
Working temperature 0℃ ~ 50℃
Storage temperature -20℃ ~ 70℃
X-431 PRO V4.0 V3.0 tablet:
Operating system Android
Memory 2GB
Storage 32GB
LCD screen 7 inch with a resolution of 1024 x 600 pixels
Camera Rear-facing 5MP camera
Connectivity
 Wi-Fi: WLAN 802.11b/g/n
 Bluetooth: Bluetooth 4.0
 USB: Type C
Working temperature 0℃ ~ 50℃
Storage temperature -20℃ ~ 70℃

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VCI device:
Working voltage 9 ~18V
Working temperature 0℃ ~ 50℃
Relative humidity 20% ~ 90%
1.5 Package List
1.5.1 X-431 PRO V4.0 (V2.0)
While opening the package for the first time, please carefully check the following
components. Common accessories are same, but for different destinations, the
accessories may vary. Please consult from the local agency or check the
package list supplied with X-431 PRO V4.0 together.
 X-431 PRO V4.0 tablet
 Password envelope
 VCI device (For connecting OBD II vehicles)
 OBD II extension cable
 OBD I adaptor (For connecting the non-16pin diagnostic connector and the
VCI device)
 Cigarette lighter cable
 Battery clamps cable
 Power adaptors
 Non-16pin connectors (For connecting non-OBD II vehicle)
1.5.2 X-431 PRO V4.0 (V3.0)
While opening the package for the first time, please carefully check the following
components. Common accessories are same, but for different destinations, the
accessories may vary. Please consult from the local agency or check the
package list supplied with X-431 PRO MINI together.
 X-431 PRO V4.0 tablet  Password envelope
 VCI device (For connecting OBD II vehicles)
 OBD II extension cable

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X-431 PRO V4.0 User Manual
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 OBD I adaptor (For connecting the non-16pin diagnostic connector and the
VCI device)
 Cigarette lighter cable
 Battery clamps cable
 Power adaptors
 Charging/Data cable
 Non-16pin connectors (For connecting non-OBD II vehicle)

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2 Preparations
2.1 Charging X-431 PRO V4.0
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.
2.4 Tips on finger operations
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.
2.5 Screen layout
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.
2.6 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”.

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X-431 PRO V4.0 User Manual
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4 How To Diagnose
4.1 Diagnosis Flowchart
For new users, please follow the operation chart shown in Fig. 4-1 to get familiar
with and start using the tool.
Fig. 4-1
4.2 Initial Use
During initial use, tap the application icon on the home screen to launch it, some
illustrations that guide you through some of important operations appear. Scroll
the screen and tap on “Start Now” to enter the Job menu.
4.2.1 User registration
Tap “Login” on the upper right corner of the Job menu:

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Fig. 4-2
1. If you are a new user, tap “New Registration”. See Fig. 4-3.
Fig. 4-3
Note: To obtain better service, you need to provide real information.
A. Create App account: In Fig. 4-3, fill in the information in each field and then
tap “Register”, a screen similar to the following will appear:

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Fig. 4-4
B. Activate the VCI device: In Fig. 4-4, input the Serial Number and Activation
Code, which can be found in the password envelope.
Fig. 4-5
Note: To exit and activate it later, tap “Skip”. In this case, you can activate your
connector by tapping “Activate Connector” in “Personal Center”. For details, please
refer to Chapter 9.3 Activate Connector.
C. Download diagnostic software: Tap “Activate”, a dialog box similar to Fig. 4-6
will appear:
Product SN
Activation code
Product SN