How to Erase Benz VGS4-0-NAG2 TCU by Launch X431 ECU Programmer?

Launch X431 ECU/TCU Cloning Software was updated to V10.40 on Jan.13, 2025.

 

Compatible devices: Launch X431 ECU & TCU Programmer, X431 X-prog3 and PC Adapter, Launch X431 scanner with SmartLink C and X-prog3 (support USB connection).

 

V10.40

  1. Added read and write, personalization, and clearing function for BOOT mode Benz transmission TCU VGS4-0-NAG2, VGS4-500-NAG2.
  2. Added BENCH mode Cadillac, Chevrolet transmission ECU T87A read and write function.
  3. Added read and write function for BENCH mode Great Wall transmission ECU 7DCT450.
  4. Added read and write function for BENCH mode Great Wall, Geely engine ECU MG1US008/MG1UA008.
  5. Optimized BMW E83 data read issue.
  6. Optimize the expired device usage status so that when the device is expired, the functions released before the expiration can still be used.

New updates are restricted to download when the free subscription has expired.

For example:

X431 ECU Programmer erase Benz 4 generation 7-speed VGS4 gearbox

 

Instructions for Replacing a Second-Hand Gearbox Computer:

The original car computer can still read data normally. Replace the second-hand gearbox computer for wiping and authorization.

 

1.Select the ECU Model

Enter the appropriate ECU model in the system.

i.e. vgs4

 

2.Access the Direct Connection Wiring Diagram

Click to open the wiring diagram.

 

3.Follow the Prompts

Follow the on-screen instructions and click “OK” to proceed.

 

4.Choose the Wiring Method

The wiring diagram offers two modes: BENCH and BOOT.

Use the BENCH mode to read data from the original car’s gearbox computer.

For wiping and personalization of the external second-hand gearbox computer, both BENCH and BOOT modes need to be connected simultaneously.

 

5.Read TCU Information

After completing the connections, click “Read TCU information”

 

6.Read EEPROM Data

Click “Read EEPROM data (BENCH)”

If BENCH mode fails to read the data, switch to BOOT mode and retry.

 

7.Replace and Erase Data

After reading the original vehicle’s ECU data, connect X431 ECU Programmer to the external ECU computer. Ensure both BENCH and BOOT modes are connected simultaneously.

Click “Erase” to clear the external ECU.

 

8.Perform Personalization

Click “Personalization” and select the original Car EEPROM Data to write

Click “OK” once personalization is successful.

 

9.Verify the Erasure

Click “Read TCU Information” to confirm that the ECU data has been successfully erased.

 

10.Install and Program

Install the ECU back into the vehicle.

Complete the programming and coding process as required.

 

Video guide:

Tech support:

Email: sales@launchx431.fr

WhatsApp: +86 18750906257

www.launchx431.fr