Patent attributes
A steering column assembly (18) of the type for controlling one or more steerable wheels in a motor vehicle includes a steering wheel (14) interface secured to the free end of a steering column (20). The steering column assembly (18) includes powered telescope adjust and tilt adjust features which a driver (16) uses to adjust the position of the steering wheel (14) for maximum comfort. One or more condition sensors (48) monitor numerous parameters about the vehicle. When an emergency condition is detected, such as the seat belt warning, a door that is ajar, various engine conditions, or erratic driving activity, a haptic controller (50) rapidly vibrates the steering wheel (14) through the telescoping and tilt adjusting motors (32, 40) as a means of alerting the driver (16) to the emergency condition. These warnings can be given priority so that a first warning is communicated by steering wheel (14) vibrations in one direction, and a second warning is communicated by vibrations in both the first direction and a second direction simultaneously. In addition, a third warning can be given emphasis by increasing the power of the vibration to a resonance mode to cause an audible warning.
