Variable Assist Power Steering (VAPS) System
WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
Early build vehicles (except Police Interceptor and long wheelbase vehicles) are equipped with variable assist power steering (VAPS). The VAPS system controls the level of power assistance available to the driver based on vehicle speed. At very low speeds, full power steering assist is provided to lessen steering efforts and increase maneuverability. At faster speeds, steering assist decreases gradually at a calibrated rate to raise steering efforts for increased directional stability and greater road feel.