Part of the car's cooling system, the coolant level sensor plays an important role in enabling the engine to function as efficiently as possible and to perform at its best. The main function of the cooling system is to keep the engine cool and stop it from overheating. The cooling system does its job by allowing liquid coolant to move through the engine. The liquid absorbs the heat from the engine which in turn cools the engine down.
Coolant, a combination of water and anti-freeze, is kept in a container in the radiator, and is responsible for helping to make sure the engine doesn't overheat. The correct amount of coolant needs to be present, and the right amount of coolant flowing through the radiator at all times that the car is in motion. If the coolant levels are too low this can have fatal results for the cooling system and subsequently the engine. The coolant level sensor functions to ensure that when the level of coolant drops below the correct level that the driver is alerted to this. Usually located in the coolant reservoir/recovery tank or directly in the radiator, the coolant level sensor measures the amount of coolant in the radiator. If there is not enough coolant, a switch is activated which sends a signal to illuminate the warning light on the dashboard.
Coolant level sensors can malfunction due to faulty electrical connections and dirt can cause the sensor to get stuck. If the warning light is illuminated but the levels of coolant are correct it is likely to be a faulty sensor. There are many problems that can arise with your car's cooling system so it is advisable to consult with your mechanic to establish the exact cause of the fault. Specifically designed for the make and model of your vehicle, the coolant level sensor is the ideal choice when you need to replace this part.