How to Repair BMW CAS3++ after bad flash with Xhorse VVDI BIMTool Pro programmer.
Take CAS3++ 0L15Y as an example.
Credit to: Mr. Fechtel.
Step 1: Read eeprom and flash
Read eeprom and flash with vvdi prog
You can use CAS3 solder free adapter or read it with mcu adapter in the traditional way.
Read ID, eeprom, flash and save.
Step 2: Repair BMW CAS3++
Set up CAS3++ module and VVDI BIMTool pro bench connection as following:
Run BIMTool software, select Special Function->CAS Repair-> EEPROM -CAS3+(0L15Y, 0M23S)->Load EEPROM Dump File
This type also requires load FLASH file.
Load EEPROM and Flash
Use ‘Fix CAS EEPROM’ to save the fixed CAS data
The loaded file was in service mode. use repair function.
Press ‘Fix CAS EEPROM’ function
Save new eeprom
Save new flash
Then Auto detect CAS information. You will see CAS information.
Select Exx Program/Code function, select car type and Connect Car, CAS module
Select Gateway registered unit
VVDI BMW tool gives you an error Car Acess System which means CAS module is bad.
Since you get the new repaired eeprom and flash, write back to CAS3++ module with vvdi prog.
Then reinstall CAS3 module back to vehicle.
Clear fault code with OBD programmer.