Tutorial: BMW Series F series Reset FEM BDC mileage eeprom 95128-95256 using Xhorse VVDI BIMTool Pro.
i.e. F20 FEM module
Procedure:
Remove BMW FEM module from the vehicle
Set up bench connection. Connect VVDI BIMTool pro with godiag BMW FEM test platform, FEM module, feed vvdi with 12v+ power supply (very important)
Turn on ignition switch of the godiag test platform
Run Xhorse vvdi bim tool software, go to BMW/FEN Key Learn and Get key Information
As you can see 2 keys are programmed and you can see VIN and current mileage is 183374 KM
Press Reset KM
BIMTool will ask to program FEM/BDC first
Press Program BMW FEM/BDC System
Follow 4 steps to program BMW FEM/BDC
Step 1. Backup coding
Read FEM/BDC coding ia OBDII or on bench
Step 2. Prepare service EEPROM
Open FEM/BDC shell, find 95128/95256 chip position, read EEPROM dump via BDM programmer
Load original eeprom dump and save special EEPROM dump, write special EEPROM dump back to 95128/95256 chip
Restore FEM/BDC shell, provide 12v+ and connect OBD
Step 3. Programming
This operation require connect FEM/BDC on bench and make sure you finish step 1 and step 2
provide 12v+ and connect OBD
Step 4. Restore original eeprom
Open FEM/BDC shell, write original EEPROM Dump read in step 2 back to 95128/95256 chip
Restore FEM/BDC shell, provide 12v+ and connect OBD
Step 5. Restore coding
Load coding file read in step 1, write to FEM/BDC via OBDII, finish FEM/BDC programming
Follow instructions to operate step by step.
First of all backup coding
Step 2
Open FEM/BDC shell, find 95128/95256 chip position, read EEPROM dump
You can solder the chip and read with programmers (VVDI Prog, Orange5, Carprog original etc) with eeprom adapter
Or read with vvdi prog and FEM clip adapter without soldering
(Remove and solder chip method is recommended as some say the clip adapter has a risk to lost data)
Read 95128 or 95256 eeprom data with vvdi prog and save original eeprom data
Load the original eeprom dump file read above
Next step is to write service eeprom dump file
Then FEM/BDC programming is processing
Open FEM/BDC shell, write original EEPROM Dump read in step 2 back to 95128/95256 chip
Load original coding file and write to FEM/BDC module
Writing coding.
NOTE:
If failed to write coding on bench, reconnect the power for BMW FEM BDC system, load the coding file again.
VVDI BIM TOOL Pro BMW FEM/DC programming success.
Get key information again, the mileage is 0 KM now.
Restore BMW FEM/BDC module back to vehicle and driver a test.
Done.