Body Control Module (BCM)

The BCM controls various systems by monitoring inputs from switches, sensors and network messages from other modules. Based on these inputs received, the BCM activates outputs. For example, the BCM monitors the headlamp switch position and based on this input, the BCM may provide voltage to turn the exterior lamps on.

The BCM controls the following:

• Battery load shed function
• Battery saver function
• Brake shift interlock
• Delayed accessory function
• Dimmable backlighting
• Exterior lighting
• Heated rear window
• Heated exterior mirrors
• Horn
• Ignition state messaging
• Interior lighting
• Keyless entry keypad
• PATS
• Post crash alert function
• Power door locks
• Push-button start function (if equipped)
• RKE system
• Remote start function (if equipped)
• Theft alarm system
• TPMS
• Transport mode function
• Wipers and washers

Refer to the appropriate service information for descriptions of these systems.