S-Type (X200) V8-4.2L (2005)
Brake Switch (Cruise Control): Description and Operation
VIN Range: N52207->N99999
Brake Pedal Position (BPP) Switch
If the brake pedal is operated while the speed control system is active, the ECM receives a signal from the BPP switch. This will cancel vehicle speed
control and allow the throttle blade to return to the position as demanded by the accelerator pedal.