See also:

If the light is blinking
If the light is blinking while driving, an engine misfire condition has been detected which may damage the emission control system. To prevent serious damage to the emission control system, you shoul ...

Changing the coolant
WARNING Never attempt to remove the radiator cap until the engine has been shut off and has cooled down completely. Since the coolant is under pressure, you may suffer serious burns from a spray ...

Driving on grades
● Before going down a steep hill, slow down and shift into lower gear (if necessary, use 1st gear) in order to utilize the overheating of your vehicle’s brakes. Do not make sudden downshifts ...