What does BCM failure mean?

1 Answers
StCharles
07/29/25 2:35pm
BCM failure refers to the Body Control Module, which primarily controls the electrical components of the vehicle's body, such as the lighting system, wipers, washers, door locks, power windows, sunroof, power mirrors, remote control, etc. Essentially, the switch signals of these electrical components are input to the BCM, which then directly or through relays controls the corresponding components. The Body Control Module includes systems like electronic window lift, four-door anti-theft system, ignition system, audio system, remote control system, wireless network system, Bluetooth system, etc. Due to the increasing number of automotive electronic applications, centralized control is no longer feasible, so modern BCM systems often adopt a decentralized approach, with many vehicles now using newer systems.
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