For 1990-2009 cars

This light comes on briefly while starting the vehicle.

If it does not, have the vehicle serviced by the dealer/retailer. If the system is working normally the indicator light goes off.

Notice: Driving with the engine coolant temperature warning light on could cause the vehicle to overheat. See Engine Overheating. The vehicle's engine could be damaged, and it might not be covered by the vehicle warranty. Never drive with the engine coolant temperature warning light on.

The engine coolant temperature warning light comes on when the engine has overheated.

If this happens pull over and turn off the engine as soon as possible. See Engine Overheating for more information.