1. How to save power?

  • Please turn off the screen while X-431 PRO3 keeps idle.
  • Set a shorter standby time.
  • Decrease the brightness of the screen.
  • If WLAN connection is not required, please turn it off.
  • Disable GPS function if GPS service is not in use

2. What should I do in case I forgot the screen lock?

You can set screen lock as pattern or password. If you forgot the password, please consult your device provider or reset your device.

Warning: Resetting may cause data loss. Before use, please make sure important data has been backed up.

3. How to do if the system runs slow?

In this case, please do the followings:

> Check all running applications and stop the unnecessary applications (Steps: Settings > Apps > Running > Tap the desired application and then tap “Stop”).

> Check all installed applications, remove the unnecessary applications (Steps: Settings > Apps > Downloaded > Tap the desired application and then tap “Uninstall”).

If all steps mentioned above are finished and the system still works slowly. Please try to close the system and reboot your X-431 PRO3.

4. How to handle when you encounter “Insufficient storage space”?

If this happens while downloading the diagnostic software, please proceed as follows:

  • Get your X-431 PRO username and password ready. If you forgot the password, please dial our hotline to retrieve it with the product serial number 98519*******.
  •  Reset the X-431 PRO3 to the default factory settings (For details, please refer to Item 5 in this Chapter).
  •  Tap “Settings”–>“WLAN”, choose the desired WLAN network to connect.
  • Open the browser and visit www.dbscar.com to download and install the latest App.
  • After the installation is complete, launch the application and login with your username and password.
  • Tap –> “Update” to download the diagnostic software.

Note: For new App, the software structure and storage space occupied by the vehicle softwares have been optimized so as to avoid the occurrence of insufficient storage.

5. How to reset X-431 PRO3?

Resetting may cause data loss. Before doing so, please make sure important data and information has been backed up.

Do the following to reset X-431 PRO3:

  •  Tap “Settings”–>“Back & Reset”;
  •  Tap “Factory data reset”;
  • Tap “Reset tablet”;
  • Tap “Clear all data” to start resetting until the tool automatically reboots.

6. Why some videos on the website can be not played?

It possibly results from:

  • The current browser does not support Flash playing;
  • Flash player does not support this video.

Try to use other browsers to watch it or install other Flash player.

7. The data and time of X-431 PRO3 can not be set.

It is because Automatic date & time is set on your X-431 PRO3. Tap Settings > Date & time, deselect “Automatic date & time” and then set the date and time manually.

In process of operation of X-431 PAD, you may come across some questions, including the

software, hardware, operation and something related to the vehicles. Read the user’s manual to

get the answer if you have any question. If it can not be solved still, please note it down and

contact our Customer Service Center (hotline: +86-0755-84528767) for help.

Here, we list some frequently asked questions and answers on using X-431 PAD.

1 About Hardware

1Q: Why does the LCD touch screen respond so slowly in cold whether?

A: It is because the ambient temperature is close to the lower limit of operating temperature

range (-10-55℃). Under this situation, it is necessary to warm up the machine for 30 minutes

before test.

2Q: There is only backlight and no character on the screen. What should I do?

A: Check if the power is well connected. Turn off the machine, unplug the power connector and

re-plug it. Turn on the machine after it has been connected to the power for 1 second.

3Q: Why there is no response or response incorrectly while clicking the screen with touch

pen?

A: Please calibrate the screen again.

4Q: What can I do when the screen is confused?

A: Please quit the current application (interface), and run it again. If the problem still exists,

please restart the system.

5Q: Why can’t the data be input after Soft Keyboard is activated?

A: The position where the cursor locates can’t be edited. Or you have not activated the cursor in

the input position, please use the stylus to click the part to edit. You can input the data if the

cursor flashes.

6Q: Why X-431Diagun fails in communication with ECU?

A: Please check and make sure that the diagnostic connector and diagnostic program are

matching the vehicle make.

2 About Software

1Q: System halts when reading data stream. What is the reason?

A: It may be caused by a slackened connector. Please turn off the machine, firmly connect the

connector, and switch on the machine again.

2Q: Why X-431 PAD fails in communication with ECU?

A: ECU does not respond. Please try to use the latest update tool to upgrade to the latest

diagnostic program.

 3 About System

1Q: Main screen blinks at the moment when engine ignition.

A: It results from electromagnetic interference and this is normal phenomena.

2Q: Diagnose interrupted during diagnosing process.

A: Caused by electromagnetic disturbing or poor connecting.

3Q: There is no response when communicating with on-board computer.

A: Please confirm the proper voltage of power supply and check if the throttle has been closed,

the transmission is in the neutral position, and the water is in proper temperature.

4Q: The systems equipped with the vehicle can not be diagnosed.

A: DLC of some early models is separated; refer to User’s Manual for details.

5Q: The fault code storage is blank.

A: Usually, it’s the “suquela” for shared circuit. Please locate and analyze the most similar fault

code and its circuit.

 4 Other questions

1Q: The thermal paper can no be fed after being loaded.

A: It is possible to install it improperly. Refer to Chapter 2.3 Printer in the User’s

Manual or consult from our branch offices or dealers.

2Q: How long is the standby time of battery?

A: Recharge it correctly. In general, the charging time is about 6 hours for new machine. Once

the charing icon disappears, it indicates it is fully charged. If standby time is set, it can last for

about 5 hours.

3Q: The screen is too white and characters cannot be seen. What is the reason and what

should I do?

A: It may be caused by improper contrast. Please refer to the section “Adjust Brightness” to

adjust the contrast.

4Q: Why is the machine automatically powered off during standby?

A: It is because the machine has been set for energy saving. Automatic shutdown will take place

if the machine is not operated for a specified period of time. Refer to the section “Power option”

under System setting in User’s Manual.

5Q: Why can’t the tested result be printed out?

A: There may be no paper in the printer. Please mount a roll of new paper. See Chapter 2.3

Printer in the User’s Manual.

6Q: Why is there no character on the printing paper?

A: The paper is mounted reversely. Please take out the paper and mount it again. See Chapter 2.3

Printer in the User’s Manual.

1. How to save power?

  • Please turn off the screen while X-431 PRO3 keeps idle.
  • Set a shorter standby time.
  • Decrease the brightness of the screen.
  • If WLAN connection is not required, please turn it off.
  •  Disable GPS function if GPS service is not in use.

2. What should I do in case I forgot the screen lock?

You can set screen lock as pattern or password. If you forgot the password, please consult your device provider or reset your device.

Warning: Resetting may cause data loss. Before use, please make sure important data has been backed up.

3. How to do if the system runs slow?

In this case, please do the followings:

> Check all running applications and stop the unnecessary applications (Steps: Settings > Apps > Running > Tap the desired application and then tap “Stop”).

> Check all installed applications, remove the unnecessary applications (Steps: Settings > Apps > Downloaded > Tap the desired application and then tap “Uninstall”).

If all steps mentioned above are finished and the system still works slowly. Please try to close the system and reboot your X-431 PRO3.

4. How to reset X-431 PADIII?

Resetting may cause data loss. Before doing so, please make sure important data

and information has been backed up.

Do the following to reset X-431 PADIII:

1. Tap “Settings” -> “Back & Reset”.

2. Tap “Factory data reset”.

3. Tap “Reset tablet”.

4. Tap “Clear all data” to start resetting until the tool automatically reboots.

5.Why some videos on the website can be not played?

It possibly results from:

1. The current browser does not support Flash playing;

2. Flash player does not support this video.

Try to use other browsers to watch it or install other Flash player.

6.The data and time of X-431 PADIII can not be set.

It is because Automatic date & time is set on your X-431 PADIII. Tap Settings >

Date & time, deselect “Automatic date & time” and then set the date and time

manually.

Here we list some frequently asked questions and answers relating to CRP123.

Question: System halts when reading data stream. What is the reason?

Answer: It may be caused by a slackened connector. Please turn off the

CRP123, firmly connect the connector, and switch on it again.

Question: Screen of main unit flashes at engine ignition start.

Answer: Caused by electromagnetic disturbing, and this is normal phenomenon.

Question: There is no response when communicating with on-board computer.

Answer: Please confirm the proper voltage of power supply and check if the

throttle has been closed, the transmission is in the neutral position, and the

water is in proper temperature.

Question: Why are there so many fault codes?

Answer: Usually, it’s caused by poor connection or fault circuit grounding.

Here we list some frequently asked questions and answers relating to CR-HD.

Question: System halts when reading data stream. What is the reason?

Answer: It may be caused by a slackened connector. Please turn off the CRHD,

firmly connect the connector, and switch on it again.

Question: Screen of main unit flashes at engine ignition start.

Answer: Caused by electromagnetic disturbing, and this is normal phenomenon.

Question: There is no response when communicating with on-board computer.

Answer: Please confirm the proper voltage of power supply and check if the

throttle has been closed, the transmission is in the neutral position, and the

water is in proper temperature.

Question: Why are there so many fault codes?

Answer: Usually, it’s caused by poor connection or fault circuit grounding.

1.Question: Screen of main unit flashes at engine start.

Answer: Caused by electromagnetic disturbing, and this is normal phenomenon.

2.Question: There is no response when communicating with on-board computer.

Answer: Please confirm the proper voltage of power supply and check if the throttle has

been closed, the transmission is in the neutral position, and the water is in proper

temperature.

Here we list some frequently asked questions and answers relating to CReaderVI.

Question: System halts when reading data stream. What is the reason?

Answer: It may be caused by a slackened connector. Please turn off the Creader VI, firmly connect the connector, and switch on it again.

Question: Screen of main unit flashes at engine ignition start.

Answer: Caused by electromagnetic disturbing, and this is normal phenomenon.

Question: There is no response when communicating with on-board computer.

Answer: Please confirm the proper voltage of power supply and check if the throttle has been closed, the transmission is in the neutral position, and the water is in proper temperature.

Question: Why are there so many fault codes?

Answer: Usually, it’s caused by poor connection or fault circuit grounding.

Here we list some frequently asked questions and answers relating to CreaderVI+.

Question: System halts when reading data stream. What is the reason?

Answer: It may be caused by a slackened connector. Please turn off the CreaderVI+, firmly connect the connector, and switch on it again.

Question: Screen of main unit flashes at engine ignition start.

Answer: Caused by electromagnetic disturbing, and this is normal phenomenon.

Question: There is no response when communicating with on-board computer.

Answer: Please confirm the proper voltage of power supply and check if the throttle has been closed, the transmission is in the neutral position, and the water is in proper temperature.

Question: Why are there so many fault codes?

Answer: Usually, it’s caused by poor connection or fault circuit grounding.

Keep your Launch X-431 PRO Serial / PAD Serial including PRO3 SE, PRO3 LINK, PAD V, and PAD IX up to date to unlock the latest vehicle coverage, improved stability, and new functions (bi-directional tests, coding, service resets). Simply connect to stable Wi-Fi, sign in, open Upgrade/Update, select the brands you need, and tap Update—then restart the app or device to finish. An active subscription is required for new downloads. If updates stall or you see Serial number/activation errors, check storage and network, confirm your account and serial number, and contact us with screenshots for quick assistance. We can also consolidate multiple stores under one master account to simplify renewals and device management.
Need help now? Our team offers remote support and on-site services for key accounts.
Our Launch scan tools support Bluetooth connectivity for fast and stable wireless communication between the diagnostic tablet and the vehicle’s OBDII connector.
With Launch Bluetooth diagnostic tools, you can easily perform wireless and bidirectional diagnostics, including reading and clearing fault codes, live data streaming, actuation tests, and more — without being limited by cables.
The Bluetooth connection makes your workflow more efficient and flexible, especially for workshops or mobile technicians who value wireless OBD2 scanning and quick vehicle access.
Our most popular models, such as the Launch CRP919MAX, X431 PRO3 SE, X431 PRO3 LINK, X431 PAD V, and X431 PAD IX, all feature reliable Bluetooth connectivity and wide vehicle coverage, supporting thousands of car brands worldwide.
Contact our sales team, and we can help you choose the best Launch scan tool with Bluetooth for your needs.
Live Data Streaming allows the diagnostic tool to communicate with the vehicle’s ECU and display real-time operating data — such as engine RPM, temperature, air-fuel ratio, throttle position, and sensor readings.
Technicians can monitor live values dynamically instead of relying only on stored fault codes, making diagnostics faster and more accurate.
Key features include:
  • Real-time monitoring of multiple parameters across different ECUs
  • Displaying values as lists or dynamic graphs
  • Recording and exporting data streams for later analysis
  • Cross-referencing live data with trouble codes for deeper insight
Benefits of using Live Data Streaming:
  • Detects intermittent or hidden faults in real driving conditions
  • Improves diagnostic efficiency and accuracy
  • Enhances professional reporting and customer transparency
Note: Live data parameters and refresh rates vary by vehicle make, model, and ECU type. Ensure stable connection and updated software for optimal performance.
ABS Diagnostics refers to the tool’s ability to communicate with a vehicle’s Anti-lock Braking System (ABS) control module. Through this function, technicians can read and clear ABS fault codes, monitor wheel speed sensor data, perform component tests, and verify the overall health of the braking system.
Key features include:
  • Reading and clearing ABS-related Diagnostic Trouble Codes (DTCs)
  • Viewing real-time wheel speed sensor data and other system parameters
  • Activating individual ABS components (e.g., pump motor, solenoid valves) for testing
  • Checking communication between the ABS ECU and other vehicle systems
Benefits of using ABS Diagnostics:
  • Quickly identifies issues in the braking system before they lead to safety risks
  • Helps confirm sensor or actuator faults without unnecessary part replacement
  • Ensures proper ABS operation after repairs or component replacement
Note: Some vehicle models may require ignition on, engine off condition for proper ABS communication. Always follow the on-screen instructions provided by the diagnostic tool.
Launch scan tools fully support Vehicle Coding on a wide range of vehicle makes and models.
With Launch diagnostic tools, you can perform vehicle coding, module adaptation, and customization after replacing parts or updating vehicle software. This feature allows technicians to enable hidden features, and adjust system configurations according to customer preferences.
Whether you’re working with X431 PRO3 LINK, X431 PAD V, or X431 PAD IX, these professional-grade scanners provide advanced coding and reset capabilities, helping workshops and technicians complete repairs faster and with dealer-level precision.
Contact our sales team, looking for a Launch vehicle coding tool that supports the latest car models. — We’ll recommend the best option for your diagnostic needs.
Launch scan tools fully support diagnostics for Heavy Duty and Semi Trucks when used with the Launch commercial software and HD adapter Box.
With this powerful combination, you can perform full-system diagnostics, including engine, transmission, ABS, SRS, brake systems, and more on a wide range of commercial vehicles and light trucks. The Launch Heavy Duty scanner supports OBD2 + HD (J1939, J1708, J1587) protocols, covering popular truck brands such as Volvo, Freightliner, Scania, MAN, Isuzu, Hino, Iveco, and many others.
Models like the Launch X431 PRO3 LINK HD, X431 PAD V, or X431 PAD IX, can easily connect to the VCI via Bluetooth for fast and reliable communication, providing dealer-level diagnostic coverage for both light truck and heavy-duty trucks in one device.
If you’re looking for a Launch heavy-duty truck diagnostic tool that supports multi-brand coverage and advanced functions like DPF regeneration, injector coding, ECU programming, and ADAS calibration, we can help you choose the best model for your workshop needs.
Launch scan tools support professional key programming and immobilizer functions for a wide range of vehicle brands.
With models such as the Launch X431 IMMO PAD, you can perform key programming, key learning, remote matching, ECU coding, and smart key replacement directly through the diagnostic interface.
The Launch key programming tool allows technicians to add new keys, erase lost keys, and match immobilizer systems (IMMO) for vehicles equipped with both traditional and smart key systems. It supports major brands like Toyota, Honda, VW, BMW, Ford, Nissan, Hyundai, and more.
If you’re looking for a Launch key programmer that offers advanced IMMO coverage, ECU coding, and all-system diagnostics in one device, our team can help you choose the best model for your workshop or locksmith business.
Launch diagnostic tools fully support DPF Regeneration and DPF Reset functions for a wide range of diesel vehicles.
Models such as the Launch CRP919MAX, X431 PRO3 LINK, X431 PAD V and X431 PAD IX allow technicians to perform diesel particulate filter regeneration, cleaning, and reset directly through the diagnostic interface.
The DPF regeneration function helps burn off soot particles in the diesel particulate filter (DPF) and restore the engine’s optimal performance without removing the filter.
With the Launch DPF regeneration tool, users can easily initiate forced regeneration, monitor DPF pressure, and clear related fault codes.
If you’re looking for a professional DPF diagnostic and regeneration solution, Launch scan tools provide OEM-level coverage, wireless connectivity, and one-click service functions for most major brands including Toyota, Ford, VW, Mercedes-Benz, Isuzu, and more.
Launch tools support a complete range of TPMS (Tire Pressure Monitoring System) functions, including sensor activation, programming, relearning, and TPMS reset.
Launch CRT511 V2 works independently, X431 i-TPMS and X431 TSGUN work with X431 PRO3 SE, X431 PRO3 LINK, X431 PAD V, or X431 PAD IX), technicians can read tire pressure as well as program new TPMS sensors and perform system relearns after tire rotation or replacement.
The Launch TPMS function helps identify faulty sensors, clear TPMS warning lights, and ensure accurate real-time tire pressure monitoring.
It supports OE-level coverage for most major vehicle brands, making it a reliable solution for both workshops and professional technicians.
If you’re looking for a Launch TPMS diagnostic and programming tool, our range offers wireless connectivity, fast updates, and full system coverage to make tire service easier and more efficient.
Launch diagnostic tools fully support Oil Reset and Service Light Reset functions.
After performing an oil change or maintenance service, the Launch X431 series scan tools—including CRP919 MAX, X431 PRO SE, X431 PRO3 SE, X431 PRO3 LINK, X431 PAD V, and X431 PAD IX—allow technicians to reset the engine oil life system, maintenance light, and service interval reminders quickly and accurately.
The Launch oil reset function ensures the vehicle’s ECU recognizes the new oil condition and helps maintain optimal engine performance.
With just a few simple steps, you can complete oil reset procedures for most European, Asian, and American vehicles.
If you’re looking for a professional Launch oil reset tool, our products offer fast updates, wide vehicle coverage, and OE-level precision, making them perfect for workshops and service technicians