See also:

Parking brake warning
The light illuminates with the parking brake applied while the ignition switch is in the “ON” position. It turns off when the parking brake is released. ...

Reporting safety defects (U.S.A.)
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTS ...

If the light illuminates constantly
If the light illuminates constantly 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 ...