See also:

Uniform tire quality grading
DOT (Department of Transportation) Quality Grades: All passenger car tires must conform to federal safety requirements in addition to these grades. Quality grades can be found where applicable ...

Troubleshooting guide
...

DOOR position
When the switch is in the DOOR position 2 , the ceiling light will illuminate under the following conditions: - ignition switch is turned to the LOCK position — remain on for about 15 seco ...