See also:

High-mounted rear stop light
In addition to the lower-mounted rear stoplights on either side of the car, the high mounted rear stoplight in the center of the rear window also lights when the brakes are applied. ...

Air intake control
  This is used to select outside (fresh) air position or recirculated air position. To change the air intake control position, push the control button. Recirculated air position   ...

Steering gear box, linkage & boots/lower arm ball joint
With the vehicle stopped and engine off, check for excessive free-play in the steering wheel. Check the linkage for bends or damage. Check the dust boots and ball joints for deterioration, cracks, ...