Issue & Fix
On BMW 4 Series (2013/02–2021/05), key addition was attempted using Autel IM608 II, both on bench and on vehicle.
After reading, modifying, and writing back the EEPROM data, the following error appeared during Immobilizer Status Scan → Add Key:
“Note: The ‘Key Learning’ function is not supported for the current ECU. A possible reason is that programming has not been performed.
If you are sure programming has been performed successfully, please feed back the version information in time.”
The issue was caused by incorrect operation steps. The correct procedure is to restore the original EEPROM first, then perform ECU Repair before continuing key learning.
