Before inspecting the cooling system, make sure the engine is cold. Allow some cooling time after driving before removing the radiator cap. Otherwise, hot coolant may spray out and cause burns. At this stage, it's also a good idea to study your owner's manual, which will walk you through the intricacies of your car. Low and high indications on the side of the plastic overflow bottle linked to the cooling system show if the engine has enough coolant. Between the two markers, the coolant level should be. You link the overflow bottle to the radiator at the front of the automobile and typically have a brightly colored cover. Lift your car's bonnet and make sure it's secure to check the levels. Then find your coolant reservoir and double-check that the water level is between the maximum and minimum. Don't fall for auto repair shop scam, check your antifreeze coolant level yourself. I like this tester kit for quick checks.