Today , lets introduce the steps for adding key & do all keys lost for BMW CAS4/CAS4+ by OBD with Autel MaxiIM IM608 as bellow :
Step 1:
Choose Smart Mode->CAS4/CAS4+ ->Key Learning-> OBD Learning->OBD Read Key
If current software is not supported, Autel will ask to update ECU/Unlock CAS4.
Then follow system prompts until it ends.
Step 2:
Select System Mode->Immobilizer system->CAS4/CAS4+->Programming->ECU Update->Upload file
Update ECU success.
Select Key Programming->Key Learning->OBD Learning->OBD Read Key
Then follow system prompts until it ends.
Notice : Make sure your IM608 has registered with XP400 programmer adapter.
