Trailer Sway Control
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Trailer sway control is a unique function of the ABS that uses information from the RCM to determine if a trailer sway event is taking place. Trailer sway is the undesirable yaw force a trailer can apply to the towing vehicle. If the ABS module determines that a trailer sway event is taking place, it sends a message to the IPC, which flashes the sliding-car icon and the message TRAILER SWAY REDUCE SPEED is displayed in the message center. If necessary, the PCM reduces engine torque thus reducing vehicle speed. Once the trailer sway has been corrected, the IPC extinguishes the sliding-car icon.