CAS/FEM/BDC interface to the engine control unit
A secret key, protected against manipulation, is stored in the CAS/FEM/BDC control unit and in the engine control unit. From this point onwards, engine control units and CAS/FEM/BDC control units can only be replaced with control units specifically ordered for each vehicle. An EWS adjustment in the vehicle is not possible.
IMPORTANT:
Trial exchange
of the engine control units and the CAS/FEM/BDC control units is not possible!