How to program BMW FEM/BDC key via Lonsdor K518ISE?

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How to program BMW FEM/BDC key via Lonsdor K518ISE?

Here I would like to share a guide on how to program keys for BMW FEM/BDC modules.

Steps:

There are mainly 3 steps: read key information -> preprocess FEM/BD system -> generate dealer key.

Read the instructions in the picture below and you can see that when you make a dealer key for all lost keys, enter the 32-digit ISN.

Step 1read key information

Before operating other functions, you must read the key information, including VIN, type, current key position, mileage, etc. (see the picture below).

Step 2. Precondition the FEM/BDC System

1: OBD backup original code data:

Connect the FEM/BDC system on the car or test platform, then back up the original encoded files via OBD.

2: Read EEPROM backup data & generate service mode EEPROM:

Remove the FEM/BDC module, find the chip 95128 or 95256, and use an ECU programmer such as VVDI-Prog, Orange5, etc. to read the EEPROM data;

Import EEPROM data into the custom folder of Lonsdor K518ISE;

Enter the program, read the original EEPROM data to generate the service mode EEPROM, export the service mode EEPROM data, and use the ECU programmer to write the chip 95128/95256.

Restore the FEM/BDC system, power the car, and connect via OBD

3: Programming

This process needs to be done on the BMW FEM/BDC test bench and you must make sure that steps 1 and 2 are done.

Power the FEM/BDC system and connect it to the OBD port.

4: Restore EEPROM data

Remove FEM/BDC module, write raw EEPROM data (step 2) to chip 95128/95256

Restore FEM/BDC system, power, and connect OBD

5: Recover encoded data

Load the encoding file backed up in the first step, and restore the encoding information through OBD

6: Preprocessing is complete.

Step 3: Generate Reseller Key.

1: Lonsdor K518ISE Programmer reads the data and selects the key to be generated.

2: Select

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