Brake light switch

Together with the signal from the brake pressure sensor (only with DSC), braking operations are detected. The brake light switch contains 2 switches (2-stage). A signal is then made available to the DSC across a line. The engine control unit receives both signals. The engine control unit sends the signal on the PT-CAN. The signals indicate to the DSC control unit whether the brake pedal is pressed. The Car Access System (CAS) supplies the brake light switch with terminal R.