Here’s the engineer solution to reset KM in BMW FEM/BDC module by Xhorse VVDI2 BMW key programmer.
Mileage calibration in BMW FEM BDC Guide:
Credit to harkan.pl
Procedure:
Open VVDI2 software
Select BMW
Select Key Learn->FEM/BDC Key Learn->Get Key Info
vvdi2 will read vehicle info, VIN, type etc
Select Programming FEM/BDC system
VVDI2 will show main 5 steps to program:
Step 1:
1.Read FEM/BDC coding via OBDII or on the bench
2. You’d better not close this window after start the procedure.
Step 2:
1.Open FEM/BDC shell, find 95128/95256 chip position, read EEPROM dump via VBDC programmer
2. Load original EEPROM dump and save special eeprom dump, write special eeprom dump back to 95128/95256 chip
3. Restore FEM/BDC shell, provide +12v and connect OBD
Step 3:
1. This operation require FEM/BDC on the bench, and make sure you inish step1 and steo2
2. Provide +12v to FEM/BDC and connect OBD
Step 4:
1.Open FEM/BDC shell,write original EEPROM dump (read in step2) back to 95128/95256 chip
2. Restore FEM/BDC shell, provide +12v and connect OBD
Step 5:
Load coding file read in step1, write to FEM/BDC via OBDII, finish FEM/BDC programming
Now here’s the detail instruction:
Click Backup Coding
Save coding file
VVDI2 prompt: Open FEM/BDC shell, read EEPROM dum,p via BDM programmer, press OK to view the
95128/95256 chip position
Check the chip position
Step 2 will start:Press OK to load original 95128/95256 EEPROM dump file
Dissolder the 95256 MCU chip and and read eeprom dump with Xhorse vvdi prog programmer
in VVDI prog, select M95256 chip type to read
Save eeprom data and name it 95256.ori
Click OK to load 95256.ori file write the service eeprom dump file to 95128/95256 chip
Press OK
name file 95256.ori_NEW
Step 3: will start make sure you finish the following operation:
1. Read and save coding file,write service eeprom dump file
2. Provide +12v to FEM/BDC and connect OBD
Continue?
Open 95256.ori_NEW
Click Write Tab
Write data
Dissolder chip from VVDI Prog programmer and solder it back to FEM/BDC shell
Press YES in VVDI2
updating system in progress
Step 4 will start:
1. Open FEM/BDC shell, write original eeprom dump (read in step2)
back to 95128/95256 chip
2. Restore FEM/BDC shell, provide +12v and connect OD
Continue after finish the list operation
Dissolder the 95256 chip from FEM/BDC shell, read original dump eeprom dump (read in step2) bac to 95256 chip with vvdi progmmaer
write dump success
remove chip from vvdi programmer adapter and solder it back to FEM/BDC shell
Press OK in VVDI2 to continue
Step 5 will start:
Press OK to load original coding file and write to FEM/BDC module
Do you want to verify the write coding
Press YES
FEM/BDC programming success, you can make new dealer key from te main window!
Select get key info
you will see mileage 1337KM
click Reset KM
This function only reset KM stored in FEM/BDC module, you need manually change KM in dashboard?
Continue?
Press YES
Select get key info
Now the KM is 0M
VVDI2 Reset BMW FEM/BDC KM success.
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