Guide to Recovering BMW FEM BDC Coding with Yanhua Mini ACDP

Guide to Restoring BMW FEM/BDC Coding Using Yanhua Mini ACDP

If you've lost coding on your BMW FEM/BDC module during preprocessing with the Yanhua Mini ACDP, you can easily recover it using the following steps:

1. Ensure that recovery is necessary due to preprocessing abnormalities or interruptions like a disconnected WiFi connection during the FEM/BDC preprocessing process.

2. To initiate the recovery process:
- Reconnect the Yanhua Mini ACDP.
- Navigate to BMW - FEM/BDC - IMMO/Mileage - BMW FEM/BDC (F series).
- Identify the FEM/BDC module again.
- Select OBD detect FEM/BDC and connect the ACDP to the FEM/BDC module.
- Compare the original FEM information. You'll notice that current module SWFL CAFD coding data are lost.

3. To rewrite the lost data for repair:
- Press OK to proceed.
- If ACDP indicates a failure to backup coding data, press OK to continue.
- Press OK again if it states that it does not support this FEM/BDC version.

4. Return to the main menu and proceed with the following steps:
- Choose the desired operation (e.g., add key).
- Select Mode 1 Add key.
- Opt for FEM/BDC initial programming process.
- Choose Method 2: Manual single-step operation.
- Select Step 6: Recover EEPROM.

5. Further, follow these steps:
- Choose the ICP method.
- Select the appropriate chip type: 95128 (FEM) or 95256 (BDC).
- Click on Recover and select the original data starting with “M”.

6. After successfully recovering the EEPROM data, proceed with Step 7: Recover coding data.
- Select the original coding data and recover it successfully.

7. Return to the main menu and select OBD detect FEM/BDC to verify the correctness of the version information and coding.

8. Once the FEM/BDC data recovery is successful, save the data.

9. Now, re-preprocess the FEM/BDC module, then add a key or perform all keys lost.

For visual guidance, refer to the provided video reference. Additionally, you can explore related posts on how to reset BMW FEM/BDC mileage, add BMW FEM key, and replace BMW FEM/BDC module using the Yanhua Mini ACDP.

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