Body control modules can be troublesome devices, especially when they make your vehicle do strange things as a result of the BCM malfunctioning. A BCM is defined as a computer component in a vehicle that operates, regulates and checks the vehicle’s electronic devices. When vehicles first began coming equipped with electronic devices, there existed a separate module for every device.

Step 1

Pay attention to your vehicle. When a BCM is malfunctioning, the electronic components of the vehicle will begin acting in strange ways and not working properly. Some of the possible causes of a malfunctioning BCM include the clock on the radio not keeping its time and reverting to 12:00 when the vehicle is turned off, then turned on again.