The Body Control Module (BCM) for a 2013-2015 Honda Civic acts as the central hub for managing interior electrical systems, including lighting, power windows, door locks, and keyless entry.
Key Information & Part Numbers
Part Numbers: Common OEM part numbers for this generation include 39980-TR3-A3 and sometimes referred to via junction box components.
Compatibility: It is crucial to match the exact part number from your old unit, as modules are specific to trim levels (e.g., EX, LX) and body types.
Location: Often integrated with the driver-side or under-dash fuse box/junction box.
Common Symptoms of Failure
Battery Drain: The BCM fails to go to sleep, causing rapid battery death.
Power Feature Failure: Inoperable windows, door locks, or lights.
Ignition Issues: The car may not start or the ignition may turn on by itself.