BMW - Immobilizer
Abbreviations
DME=Digital Motor Electronics
DDE=Digital Diesel Electronics
EWS=Electronic drive-away protection
CAS=Car access system (immobilizer)
Generations
- DME/DDE and EWS ECU
- EWS2
- EWS3
- EWS3D
- DME/DDE and CAS ECU
DME/DDE <-> EWS synchronization
Two values, one fixed, one rolling. Coding must be performed in both engine (DME/DDE) and immobilizer ECU at the same time, otherwise immobilizer not allowing start.
Incorrect synchronization usually results in DTC "2737 EWS manipulation protection"
Coverage in BimCOM
page revision: 4, last edited: 29 Jan 2020 17:18