A system and method that warn a vehicle driver by shaking or dithering the
steering wheel that one or more active control systems on the vehicle is
providing active control. The system includes an AFS actuator for
providing a steering assist signal for stability control purposes, and a
VES actuator for providing resistance against turning of the steering
wheel. The system also includes a controller for causing the AFS actuator
to shake the steering wheel if the active control is active and for
causing the VES controller to apply and release tension to the steering
wheel if the steering wheel is turned and the active control is active.
The controller may increase the shaking of the steering wheel as the
amount of the active control increases.