Component Description: BCM
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 is the master module in control of the power door lock system. It is responsible for locking/unlocking the doors and releasing the liftgate/luggage compartment lid. The BCM receives direct input from the door lock control switch. It receives passive entry and RKE commands from the RFA module over the MS-CAN.