How to use Yanhua ACDP BMW BDC2 Unlock DME Function?

 Q: There is a “Unlock DME” feature in Yanhua Mini ACDP module 38 BMW BDC2 function menu. What does unlock DME mean? Does it refer to engine ECUs blocked after 2020/10?

Here is the clue.

 

What is Unlock DME?

If a DME is unlocked, you can rewrite immo data to the engine.
If you get a second-hand engine DME, you can install it on other cars after unlocking it.

 

Compatibility:

Unlock DME is available for B48/B58 engines (F chassis and G chassis) that can read engine EEPROM data by Yanhua ACDP.

 

Requirement:

Unlock DME function requires A504 license activation.

 

Operation mode:

Unlock DME is done via OBD.

 

Procedure:

First of all, read and back up EEPROM data from original DME first.

Read B48 EEPROM data with module 3+ B48 interface board on bench mode.

Then select “Unlock DME” function.

Connect ACDP with vehicle OBDII port.

Upload original eeprom data and follow ACDP prompts to unlock DME until completed.