Temperature switch, radiator fan

The temperature switch for the radiator fan is an important component of the engine cooling system and controls the switching on and off of the electric radiator fan. It monitors the temperature of the coolant in the cooling system and automatically activates the fan as soon as a certain temperature is reached.

The switch is usually mounted in the radiator, the thermostat housing, or the coolant circuit. As soon as the coolant temperature exceeds a defined limit, the temperature switch closes the circuit and the radiator fan is activated. This forces additional air through the radiator to effectively dissipate heat and prevent the engine from overheating.

When the temperature drops again, the switch opens the circuit and the fan switches off automatically. This system ensures that the engine is adequately cooled even at low vehicle speeds or when stationary.

A faulty temperature switch can cause the radiator fan to malfunction. Typical symptoms include a fan running constantly or a fan that doesn't switch on at all, which can lead to engine overheating.

At Autoteile Gossau, you'll find temperature switches for radiator fans in both original equipment and high-quality aftermarket versions for numerous vehicle makes and models. Benefit from the lowest prices in Switzerland, fast delivery, or pick up your order directly from our store in Gossau and pay conveniently by cash or card.