How to replace Mercedes-Benz W212 DSM A0002703452 (FBS4) with Launch X431 ECU & TCU programmer on bench?
Quick search DSM, choose DSM and Bench mode.
Check wiring diagram.
Connect DSM FBS4 with Launch X431 ECU programmer according to the diagram.
Read module information
Read EEPROM data
Read and save original data.
After reading data, exit directly and replace the donor Gearbox that needs to be replaced.
Connect the donor Gearbox with Launch X431 ECU programmer.
Read module information and read eeprom for the donor gearbox to back up data.
Select Personalization.
Upload the original gearbox eeprom data and personalize data.
Persianization successful.
New gearbox needs to be programmed to start. Use MB star device for programming and coding.