Mercedes OBD Unlock: M139

NOTICE : If your software reference is not supported or you can't find this data, please contact our support : [email protected]

Please, carefully read the instructions for the process here.

Notes for our users : In case of dealer update, do not program the file containing the old version. Contact [email protected] to get the new file. Programming the old version will make the ECU inoperable ! Don't worry, the ECU remains unlocked even after a manufacturer update.

This engine type requires purchasing an unlock. It will allow you to flash M139: 2.0T with MG1CP002 (MRG1) by OBD or OBD over BENCH with the bFlash tool (from the OBD port or directly from the ECU connector).

Attention: MRG3, MRG4, MRG1PI and MG1CP003 are not supported. (list subject to change)

To keep the delivery process hassle-free & smooth, you will be asked to insert the VIN number(s) in your order and mention your invoice reference on the return labels for your parcel. The template is available here.

The process involves 5 steps:

• Step 1: Contact us at [email protected] with an OBD identification for confirmation of the Unlock

• Step 2 : Purchase bFlash Unlock Package for your engine type.

• Step 3: Send your parcel with ECU to bFlash team at HQ in Belgium.

• Step 4: Our team will perform OBD Unlock

• Step 5: Program it with bFlash OBD protocol

The full process is explained on bflash.eu/mercedes-unlock

• Do you have the ECU only? No problem, our team will supply you with a schematic to program directly from the ECU connector

• Read is not possible, you will be supplied with the read file by our team at the time of the unlock

• Software and calibration areas can be programmed. EEPROM and bootloader flash are not available

• ONLY bFlash device can be used for programming. No other tools are supported