See also:

California fuel
If your vehicle was certified to California Emission Standards as indicated on the underhood tune-up label, it is designed to optimize engine and emission control system performance with gasoline ...

State emission testing (U.S. only)
WARNING Testing of an All-Wheel Drive vehicle must NEVER be performed on a single two-wheel dynamometer. Attempting to do so will result in uncontrolled vehicle movement and may cause an accident ...

Stereo indicator
The stereo indicator “ST” will illuminate when an FM stereo broadcast is received. ...