284B27JE0B Nissan CONTLER ASSY-BC, Price: 255.88$, Weight: 0.515kg

Body Control Module Assembly (BCM)

This electronic control unit is the “traffic manager” for many comfort and safety functions in your Nissan. It is needed to coordinate signals between switches, sensors, and actuators so the vehicle’s daily features work smoothly without overloading other computers. ⚙️

How It Works

The module reads inputs like door-ajar switches, key/immobilizer requests, lighting stalk commands, and remote lock signals. Then it sends the correct outputs to items such as power door locks, interior lights, horn confirmation, wipers, and some alarm functions. It communicates on the vehicle network (CAN/LIN) to share data with other control units for timed and automatic operations. 🔌

If This Part Fails

A faulty unit can cause random electrical glitches: doors won’t lock/unlock, interior lamps stay on or won’t come on, key fob stops responding, security system issues, warning lights, or battery drain overnight. In some cases, the car may not recognize the key correctly, leading to no-start or intermittent starting. Replacing a failing BCM restores stable power management and correct command timing. ✅