The car's cooling system is a coolant temperature sensor (ECT) and a radiator fan. These two elements work together to ensure that the car's engine remains at the ideal operating temperature. Here's a closer look at how they work:

Coolant temperature sensor (ECT):

Its primary function: it measures the temperature of the coolant in the engine.

How does it work?

The sensor has a resistance that changes depending on the temperature. When the liquid heats up, the resistance decreases, sending a signal to the vehicle's electronic control unit (ECU). Based on this signal, the controller makes decisions about the operation of the radiator fan or the adjustment of the fuel mix.

Radiator fan:

Its primary function: cooling the coolant that passes through the radiator.

How does it work?

When sensors such as ECT indicate that the temperature has exceeded the ideal limit, the controller turns on the fan to provide the necessary cooling. Some cars rely on electric fans, while others rely on fans that work mechanically through the engine belt.

How does this affect your car?

Efficient cooling: The sensor and fan ensure that the motor does not overheat, protecting vital components from damage.

Fuel efficiency: The integrated cooling system helps keep the engine at a temperature that ensures the best performance and efficiency.

If you notice a constant overheating of the motor or fan sound even in cold climates, there may be a problem with the ECT sensor or fan, which warrants immediate examination.