Mercedes OBD Unlock: M139

NOTICE : Recent Mercedes updates may not be supported yet. It is IMPERATIVE to contact us at [email protected] BEFORE sending the ECU. Please send us an OBD Identification to confirm the possibilitity of the Unlock.
If an ECU cannot be Unlocked without prior check, the refund will only be 75% of the value of the Unlock.

Please, carefully read the instructions for the process here.

This engine type requires purchasing an unlock. It will allow you to flash OM654: 1.95D with MD1CP001 (MRD1/MRD1NFZ) by OBD or OBD over BENCH with the bFlash tool (from the OBD port or directly from the ECU connector).

Attention: MRD2 is not supported.

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