What does BCM mean in a car?

[OAyla]

BCM in a car stands for Body Control Module, whose main function is to achieve discrete control functions and manage various electrical components. It primarily controls body electrical devices such as lights, wipers, door locks, power windows, sunroofs, etc. The application of electronic control units in automobiles is becoming increasingly widespread. Currently, the market trend for BCMs is toward centralized architecture. Compared to decentralized structures, centralized architecture features fewer modules and more functionalities. The advantages of centralized architecture include simpler network connections, higher cost-effectiveness, and an optimized number of electronic control units (ECUs), thereby reducing wiring harness weight. Weight reduction lowers manufacturing costs and improves fuel efficiency, creating a win-win solution for both automakers and car owners.