Restraints Control Module (RCM)

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: If a vehicle has been in a crash, inspect the restraints control module (RCM) and the impact sensor (if equipped) mounting areas for deformation. If damaged, restore the mounting areas to the original production configuration. A new RCM and sensors must be installed whether or not the air bags have deployed. Failure to follow these instructions may result in serious personal injury or death in a crash.

NOTE: This vehicle is equipped with the SYNC® feature which contains the 911 assist option. Refer to the Owner's Literature .

The RCM carries out the following functions:

Deploys the air bag(s)/side air curtain(s) in the event of a deployable collision
Activates the safety belt retractor pretensioner to control tension on the safety belt in the event of a deployable collision
Monitors the SRS for faults
Sends a message to the IC module to flash/illuminate the air bag warning indicator if a fault is detected
Communicates through the DLC the current or historical DTCs

The RCM monitors the SRS for possible faults. If a SRS fault exists, the RCM sends a message to the IC module to illuminate the air bag warning indicator.

When the ignition is cycled (OFF and then ON), the IC module will prove out the air bag warning indicator by lighting for 6 seconds and then turn off. If a fault is detected, the RCM requests illumination of the air bag warning indicator and will remain illuminated for the rest of the ignition cycle. If the RCM requests illumination of the air bag warning indicator and the air bag warning indicator does not function, the IC module will automatically activate an audible chime.

The RCM includes a backup power supply. This feature provides sufficient backup power to deploy the air bags in the event that the ignition circuit is lost or damaged during impact. The backup power supply will deplete its stored energy approximately one minute after power and/or ground has been removed from the RCM .