See also:

Tire pressure monitoring system (TPMS) (U.S.-spec. models)
Type A Type B The tire pressure monitoring system provides the driver with the warning message indicated by sending a signal from a sensor that is installed in each wheel when tire p ...

If the light illuminates steadily
If the light illuminates steadily while driving or does not turn off after the engine starts, an emission control system malfunction has been detected. You should have your vehicle checked by an auth ...

State emission testing (U.S. only)
At state inspection time, remember to tell your inspection or service station in advance not to place your SUBARU AWD vehicle on a two-wheel dynamometer. Otherwise, serious transmission damage will r ...