Launch X-431 PROS V4.0 User Manual
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Launch X-431 PROS V4.0 User Manual

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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.

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Summary of Contents for Launch X-431 PROS V4.0

  • Page 1 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.
  • Page 2 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...
  • Page 3 LAUNCH X-431 PROS V4.0 User Manual 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.
  • Page 4 LAUNCH X-431 PROS V4.0 User Manual 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.

  • Page 5: Table Of Contents

    LAUNCH X-431 PROS V4.0 User Manual TABLE OF CONTENTS ..................1 1 Introduction 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 ................
  • Page 6 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 ..............
  • Page 7 LAUNCH X-431 PROS V4.0 User Manual .................. 59 8 Add-on Modules 8.1 ADAS (Calibration) ................. 59 8.2 TPMS ..................... 60 8.3 BST360 (Battery Tester) ................. 61 8.4 Videoscope..................... 61 ..................... 62 9 User Info 9.1 My Report ....................62 9.2 VCI ......................64 9.3 VCI Management ...................

  • Page 8: Introduction

    X-431 PROS V4.0 User Manual 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.

  • Page 9: Package List

    LAUNCH X-431 PROS V4.0 User Manual  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.

  • Page 10: Components & Controls

    LAUNCH X-431 PROS V4.0 User Manual To supply power to the non-16pin Cigarette lighter connector from the vehicle’s cigarette (Optional) cable lighter receptacle. Battery clamps To supply power to the non-16pin (Optional) cable connector from the vehicle’s battery. For connecting the VCI connector and...

  • Page 11: Vci Connector (Only Applies To 12V Cars)

    LAUNCH X-431 PROS V4.0 User Manual 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 Slot for VCI VCI once, it will be automatically ejected from connector the docking slot.

  • Page 12: Technical Parameters

    LAUNCH X-431 PROS V4.0 User Manual 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.
  • Page 13 LAUNCH X-431 PROS V4.0 User Manual Front-facing 2.0MP camera + Rear-facing Camera 5.0MP camera Working temperature 0℃ ~ 50℃ ℃ Storage temperature 70℃ VCI connector: Working voltage 9 ~18V Working temperature 0℃ ~ 50℃ Relative humidity 20% ~ 90%...

  • Page 14: Initial Use

    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.

  • Page 15: Screen Layout

    LAUNCH X-431 PROS V4.0 User Manual 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.

  • Page 16: Change System 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.

  • Page 17: Getting Started

    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.
  • Page 18 LAUNCH X-431 PROS V4.0 User Manual (If you are a new user, follow to proceed.) (If you have registered to be a member, go to to login the system directly.) (In case you forgot password, refer to to reset a new password.) A.
  • Page 19 LAUNCH X-431 PROS V4.0 User Manual 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.

  • Page 20: Job Menu

    LAUNCH X-431 PROS V4.0 User Manual 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”...

  • Page 21: Diagnostics Toolbar

    LAUNCH X-431 PROS V4.0 User Manual • Access the diagnostic reports from the previously tested vehicles. Diagnostic History • Resume the previous operation without starting from scratch. Software Update To update vehicle diagnostic software and APK. Perform commonly used repair & maintenance Service Function services.
  • Page 22 LAUNCH X-431 PROS V4.0 User Manual Home Returns to Job menu screen. Tap to print the current screen. To perform printing, you need to purchase an extra wireless printer manufactured by LAUNCH Print separately and then properly configure the wireless printer following the steps described in Chapter 9.8.3.

  • Page 23: Connections

    LAUNCH X-431 PROS V4.0 User Manual 4 Connections 4.1 Preparation Please make sure the following conditions are met before diagnosis:  The ignition is turned on.  The vehicle battery voltage is 11-14V.  The throttle is in the closed position.
  • Page 24 LAUNCH X-431 PROS V4.0 User Manual  A vehicle not equipped with an OBD II management system supplies communication through a DLC connection, and in some cases supplies 12V power through the cigarette lighter receptacle or a connection to the vehicle battery.
  • Page 25 LAUNCH X-431 PROS V4.0 User Manual...

  • Page 26: Diagnosis

    LAUNCH X-431 PROS V4.0 User Manual 5 Diagnosis 5.1 Intelligent Diagnosis Through simple Bluetooth communication between the display tablet and VCI, you can easily get the VIN (Vehicle Identification Number) information of the currently identified vehicle. Once the VIN is successfully identified, the system will retrieve it from the remote server and then guide you to vehicle information page without the necessity of step-by-step manual menu selection.
  • Page 27 LAUNCH X-431 PROS V4.0 User Manual Note: If the VCI is not paired up with the tablet before doing this step, a prompt message box will appear on the screen. Check all the possible reasons of Bluetooth connection failure carefully, and then tap OK to enter the following screen.
  • Page 28 LAUNCH X-431 PROS V4.0 User Manual • Tap “Diagnostic” to start a new diagnostic session. • Tap “Scan History” to view its historical repair record. If there are records available, it will be listed on the screen in sequence of date. If no records exist, the screen will show “No Record”.
  • Page 29 LAUNCH X-431 PROS V4.0 User Manual • Tap the input field to directly, tap OK. If the VIN exists on the remote server, the system will enter the diagnostic function selection screen. • Tap to launch the VIN recognition module.

  • Page 30: Local Diagnosis

    LAUNCH X-431 PROS V4.0 User Manual • Tap to input the VIN manually if the tablet has failed to identify the VIN of the vehicle. • Tap to scan the VIN barcode. If the VIN barcode cannot be recognized, please manually input the VIN.
  • Page 31 LAUNCH X-431 PROS V4.0 User Manual On-screen Buttons: Testable models: Tap to view the vehicle models that the current diagnostic software covers. Update instruction: Tap to view the optimized items and enhancements. Software introduction: Tap to check the software function list.

  • Page 32: Health Report (Quick Test)

    LAUNCH X-431 PROS V4.0 User Manual 5.2.1 Health Report (Quick Test) This function varies from vehicle to vehicle. It enables you to quickly access all the electronic control units of the vehicle and generate a detailed report about vehicle health.
  • Page 33 LAUNCH X-431 PROS V4.0 User Manual Fig. 5-14 The tested system with fault code appears in red and the system with OK displays in black (normally). On-screen Buttons: Clear DTCs: Tap to clear the existing diagnostic trouble codes. Note: Diagnostic Trouble Codes or Fault Codes can be used to identify which engine systems or components that are malfunctioning.
  • Page 34 LAUNCH X-431 PROS V4.0 User Manual Fig. 5-15 Note: Diagnostic report is classified into three categories: Pre-Repair report, Post-Repair report and Diagnostic Scan. No matter which type you saved the report as, the report type will be appended as a tag on the upper right corner of the diagnostic report for easier identification.

  • Page 35: System Scan

    LAUNCH X-431 PROS V4.0 User Manual 5.2.2 System Scan This option allows you to quickly scan which systems are installed on the vehicle. On the test item selection screen, tap “System Scan”, the system start scanning the systems. Once the scanning is complete, the screen will display the result.
  • Page 36 LAUNCH X-431 PROS V4.0 User Manual Swipe the screen from the bottom to view the vehicle system on the next page. Tap the desired system (take “ECM” for example) to enter the test function selection screen. Note: Different vehicle has different diagnostic menus.
  • Page 37 LAUNCH X-431 PROS V4.0 User Manual This function is used to read the version information of system mode, vehicle VIN, software and ECU. B. Read Fault Code This function displays the detailed information of DTC records retrieved from the vehicle’s control system.
  • Page 38 LAUNCH X-431 PROS V4.0 User Manual to as freeze frame data. Freeze frame data includes a snapshot of critical parameter values at the time the DTC is set. Help: Tap to view the help information. Code Search: Tap it to search for more information about the current DTC online.
  • Page 39 LAUNCH X-431 PROS V4.0 User Manual provide insight on overall vehicle performance. It can also be used to guide vehicle repair. Caution: If you must drive the vehicle in order to perform a troubleshooting procedure, ALWAYS have a second person help you. Trying to drive and operate the diagnostic tool at the same time is dangerous, and could cause a serious traffic accident.
  • Page 40 LAUNCH X-431 PROS V4.0 User Manual OK: Tap it to confirm and jump to the next step. After selecting the desired items, tap “Confirm” to enter the data stream reading page. Notes: 1. If the value of the data stream item is out of the range of the standard (reference) value, the whole line will display in red.
  • Page 41 LAUNCH X-431 PROS V4.0 User Manual  Combine – this option is mostly used in graph merge status for data comparison. In this case, different items are marked in different colors. On-screen Buttons: Graph(Single): Tap it to view the waveform.
  • Page 42 LAUNCH X-431 PROS V4.0 User Manual • Combine: This option is mostly used in graph merge status for data comparison. In this case, different items are marked in different colors (maximum 4 items can be displayed on the same screen simultaneously).
  • Page 43 LAUNCH X-431 PROS V4.0 User Manual Report: To save the current data in text format. All reports are saved under the tab “Diagnostic Report” in “My Report” from “Personal Center” menu. For details on report operations, please refer to Chapter 9.1 “My Report”.

  • Page 44: Remote Diagnosis

    5.3 Remote Diagnosis This option aims to help repair shops or technicians launch instant messaging and remote diagnosis, making the repair job getting fixed faster. Tap “Remote Diagnosis” on the Job menu, the screen appears blank by default.

  • Page 45: Interface Layout

    LAUNCH X-431 PROS V4.0 User Manual 5.3.1 Interface Layout Home button Tap it to navigate to the Job menu screen. Directly input the registered username of the tool to start Search bar searching, and then tap the desired one to add it into your friend list.

  • Page 46: Add Friends

    In the search bar, input the partner’s username and tap “Search” button next to the search bar to starts searching from Launch’s golo business database. The partner must be the users who have registered their Launch’s diagnostic tools. They may be the following: ...
  • Page 47 LAUNCH X-431 PROS V4.0 User Manual Tap “Add friend”, a dialog box pops up: Tap “CONFIRM” to send your request. Once the partner receives the request, a beep will sound. Tap the “Message” tab: • Once the partner agreed your request, he/she will automatically be listed in the Contact tab.

  • Page 48: Start Instant Messaging

    X-431 PROS V4.0 User Manual 5.3.3 Start Instant Messaging Note: The I/M (Instant Messaging) function is open to all users who had Launch’s diagnostic tool equipped with this module. After adding your friends, tap the desired one’s photo to enter a screen similar to...

  • Page 49: Launch Remote Diagnosis (Device-To-Device)

    5.3.4 Launch Remote Diagnosis (Device-To-Device) The tool is allowed to initiate remote diagnosis with other diagnostic tools (including but not limited to the X-431 PROS V4.0) of Launch family, which are equipped with this module. Note: Before performing this operation, please make sure the following no matter which side sends the remote request: ...
  • Page 50 LAUNCH X-431 PROS V4.0 User Manual  Once vehicle diagnosis is complete, a report will be created. Input your comments on this report, and then tap “Send Report” to send it to the partner. Tap “Request control remote device” Wait for partner’s confirmation...
  • Page 51 LAUNCH X-431 PROS V4.0 User Manual Cancel To cancel this operation.

  • Page 52: Launch Remote Diagnosis (Device-To-Pc)

    X-431 PROS V4.0 User Manual 5.3.5 Launch Remote Diagnosis (Device-To-PC) Except that the remote diagnosis can be done between different Launch’s diagnostic tools that come loaded with the module, user also can ask for remote control from PC client technician.
  • Page 53 LAUNCH X-431 PROS V4.0 User Manual 1. Slide the switch “Allow device to be connected to the WEB client remote diagnostic device” to ON so that the partner can find and connect to this device while using the PC. 2. Notify the partner of the PC client website http://remote.x431.com. When the...
  • Page 54 LAUNCH X-431 PROS V4.0 User Manual 3. Tell the partner to input his own official technician account and password, and then tap “Login” to navigate to the following figure. 4. Tell the partner to check the box “Serial number” and enter the Serial Number provided by you, and then tap “Start remote diagnosis”...

  • Page 55: Feedback

    LAUNCH X-431 PROS V4.0 User Manual 1) You are not suggested to execute any actions. 2) The partner is not allowed to save any diagnostic reports or records on your tablet. The operations in remote diagnosis are same as those in local diagnosis. Once the session is complete, a remote diagnostic report will be automatically generated.
  • Page 56 LAUNCH X-431 PROS V4.0 User Manual • Tap certain vehicle model to view the details of the last diagnostic report. • To delete certain diagnostic history, select it and then tap “Delete”. To delete all historical records, tap “Select All” and then tap “Delete”.

  • Page 57: Service (Reset) Function

    LAUNCH X-431 PROS V4.0 User Manual 6 Service (Reset) Function This module provides an easy dial to quickly access the most commonly performed service functions as follows.  Oil Reset Service  Electronic Parking Brake Reset  Steering Angle Calibration ...

  • Page 58: Electronic Parking Brake Reset

    LAUNCH X-431 PROS V4.0 User Manual 6.2 Electronic Parking Brake Reset This function enables you to reset the brake pad after replacing the brake pad. It needs to be performed in the following cases: 1. The brake pad and brake pad wear sensor are replaced.

  • Page 59: Immo Service

    LAUNCH X-431 PROS V4.0 User Manual It needs to be performed in the following cases: 1. After the engine ECU, crankshaft position sensor, or crankshaft flywheel is replaced. 2. The DTC 'tooth not learned' is present. 6.7 IMMO Service This function enables you to perform the anti-theft key matching function, so that the immobilizer control system on the car identifies and authorizes remote control keys to normally use the car.

  • Page 60: Electronic Throttle Position Reset

    LAUNCH X-431 PROS V4.0 User Manual It needs to be performed in the following cases: 1. The exhaust back pressure sensor is replaced. 2. The PM trap is removed or replaced. 3. The fuel additive nozzle is removed or replaced.

  • Page 61: Immo Programming

    LAUNCH X-431 PROS V4.0 User Manual 6.16 IMMO Programming This function enables you to perform read-write function for vehicle key, EEPROM, MCU, and EEPROM/FLASH data of vehicle engine/gearbox ECU.

  • Page 62: Software Update

    LAUNCH X-431 PROS V4.0 User Manual 7 Software Update This module allows you to update the diagnostic software & App and set frequently used software. If you did not download the software in process of product registration or a pop-up message prompting you that some new software can be updated, you may use this option to download it or keep it synchronized with the latest version.

  • Page 63: Set Frequently Used Software

    LAUNCH X-431 PROS V4.0 User Manual To pause downloading, tap “Stop”. To resume it, tap “Continue”. If network connection failure occurs, tap “Retry” to try again. Once download is finished, the software packages will be installed automatically. 7.2 Set Frequently Used software To easily locate and quickly update some frequently used software, you can use the “Common Software”...
  • Page 64 LAUNCH X-431 PROS V4.0 User Manual update page. Tap “Renewal” to navigate to the payment screen. There are two ways available for you to make payment: PayPal and Subscription Renewal Card (*need to buy it from the local dealer where you purchased the tool).
  • Page 65 LAUNCH X-431 PROS V4.0 User Manual 4. Go to update center to update the diagnostic software.

  • Page 66: Add-On Modules

    LAUNCH X-431 PROS V4.0 User Manual 8 Add-on Modules 8.1 ADAS (Calibration) This module enables you to effectively and accurately calibrate a wide range of camera-based & radar-based driver assistance systems, e.g. the front camera for the lane departure warning system, the radar sensor for the ACC (Adaptive Cruise Control) or the camera for adaptive headlights.

  • Page 67: Tpms

    LAUNCH X-431 PROS V4.0 User Manual 8.2 TPMS This module allows you to configure the tablet as TPMS activation & diagnostic tool, which provides the ability to trigger TPMS sensor, program TPMS sensor, perform the relearning procedure. It needs to work with the compatible TSGUN device (sold separately).

  • Page 68: Bst360 (Battery Tester)

    LAUNCH X-431 PROS V4.0 User Manual 8.3 BST360 (Battery Tester) This module allows you to fix battery detection faster and easier. It needs to work with the specific Bluetooth battery tester (sold separately). For more details, please refer to the User Manual included with the module.

  • Page 69: User Info

    LAUNCH X-431 PROS V4.0 User Manual 9 User Info This function allows users to manage personal information and VCI. 9.1 My Report This option is used to view, delete or share the saved reports. Tap “My Report”, there are total 3 options available.
  • Page 70 LAUNCH X-431 PROS V4.0 User Manual • To share the report with others, select the desired one and then tap “Share”. • Select the desired report and then tap “Delete” to delete it. • To revise the filename of the report, tap “Rename”.

  • Page 71: Vci

    LAUNCH X-431 PROS V4.0 User Manual Frame Playback – plays back the recorded data stream items frame by frame. Once it is in frame playback mode, this button changes into “Auto Playback”. Remote Diagnostic Report lists all diagnostic reports generated in process of remote diagnosis.

  • Page 72: Firmware Fix

    LAUNCH X-431 PROS V4.0 User Manual For details on how to obtain Activation Code, tap the link below to get help. 9.5 Firmware Fix Use this item to upgrade and fix diagnostic firmware. During fixing, please do not cut power or switch to other interfaces.

  • Page 73: Shop Information

    LAUNCH X-431 PROS V4.0 User Manual 9.8.2 Shop Information This option lets you define your print information. It mainly includes Workshop, Address, Telephone, Fax and License Plate. After inputting, tap “Save”. Once you saved the print information, it will be entered automatically in the “Add Information”...

  • Page 74: Orientation

    LAUNCH X-431 PROS V4.0 User Manual at + reboot = 1 rebooting... 1. Tap “Reset” to configure the printer. Step 1: Connect the printer: Tap “Scan” to start scanning and select the desired printer hotspot named with X-431PRINTER-XXXX (XXXX stands for 4 characters), and then tap “Connect”...

  • Page 75: Login/Logout

    LAUNCH X-431 PROS V4.0 User Manual 9.8.7 Login/Logout To logout the current user ID, tap “Logout”. To login the system again, tap “Login”. 9.9 Diagnostic Software Clear This item allows you to hide/clear the diagnostic software that is not frequently used.

  • Page 76: Others

    LAUNCH X-431 PROS V4.0 User Manual 10 Others 10.1 Synchronization You can transfer media files and APK between the PC and the tablet. 10.1.1 Connect to PC 1. Use the USB cable to connect the tablet to your PC. 2. Swipe from the top, a message “Connected as a media device” appears.

  • Page 77: Faq

    LAUNCH X-431 PROS V4.0 User Manual 11 FAQ 1. How to save power?  Please turn off the screen while the tool keeps idle.  Set a shorter standby time.  Decrease the brightness of the screen.  If WLAN connection is not required, please turn it off.
  • Page 78 Note: Before registration, please make sure the network is properly connected. After the tablet has been successfully reset, follow the steps below to download the App: 1. Launch the browser and the default official Launch website opens (If a blank page pops up, just type in www.x431.com in the input bar).
  • Page 79 The exclusive remedy for any automotive meter found to be defective is repair or replacement, and LAUNCH shall not be liable for any consequential or incidental damages.
  • Page 80 Launch website: http://www. cnlaunch.com http://www.x431.com Statement: LAUNCH reserves the rights to make any change to product designs and specifications without notice. The actual object may differ a little from the descriptions in the manual in physical appearance, color and configuration. We...

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