CHECK CONTROL MESSAGES FOR BRAKE SUSPENSION AND AIR BAG SYSTEM MALFUNCTION: Multiple check control messages (CCM) can display for brake suspension and air bag system malfunction. The customer may also complain about any of the following: Engine can no longer be switched off Drive position (D) cannot be engaged on the gear selector switch (GWS) Reduction of steering assist After an engine emergency shut-off (either a prolonged long press; or 3 consecutive short presses of the Start/Stop button) and the vehicle going to sleep (identifiable by the lighting of the "Start/Stop button") everything resumes normal functionality and the CCM messages no longer appear. When performing a vehicle test the following diagnostic fault codes are stored in the BDC: CD0420 - "error of Flexray controller on Flexray bus" D91FF9 - "Flexray message data drivetrain 2 (DT_PT_2): Timeout" This message may be read out in the ZGM control unit or Body Domain Controller CAUSE Software in the Body Domain Control unit (BDC).
