CAS/FEM/BDC interface to the engine control unit
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
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!