Body Control Module (BCM) - Push Button Start
WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
The BCM determines the vehicle ignition mode based on the start/stop switch input, the BPP input (automatic transmission) or CPP input (manual transmission) and RFA module messages. The BCM communicates the ignition mode to the other modules over the MS-CAN and HS-CAN. The BCM monitors the start/stop switch input and the ignition mode outputs, if a fault is detected in the ignition system, Diagnostic Trouble Codes (DTCs) are set in the BCM. For information on the BCM, Refer to: Module Controlled Functions - Overview .