See also:

CLIMATE CONTROL AIR FILTER
(For evaporator and blow unit) The climate control air filter is located in front of the evaporator unit behind the glove box. It operates to decrease the amount of pollutants entering the car. ...

Anti-Lock Brake System
The Anti-Lock Brake System (ABS) is designed to prevent wheel lock-up during sudden braking or on hazardous road surfaces. The ABS control module monitors the wheel speed and controls the pressure ...

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, ...