The heating and cooling system regulates the engine temperature by cycling coolant through the engine and back to the radiator to dissipate the heat. Problems with this system can cause your engine to overheat which can cause significant and expensive damage. If the temperature gauge rises above normal operating temperature, have the system checked. Never let the temperature gauge reach the red zone. Pull over and shut the engine off if this occurs. NEVER open the radiator cap if the engine is hot!
