Component Description: BCM
WARNING: This page is about a different car, the 2018 Ford Fiesta. However, it is still accessible from the selected car via links, so may be relevant.
The BCM calculates and reports (via audio system tones) the distance between the rear of the vehicle and an object when the transmission is in reverse. For additional information about BCM operation, Refer to: Module Controlled Functions - System Operation and Component Description .