If the sensor and the fuse are working correctly, but the fan doesn’t turn on even when the car is overheating, it might be a wiring issue. Inspect the wiring going to the radiator’s control unit or the relay. Check connector plug health and see if they are corroded at the relay ...
The radiator fan cools the coolant as it passes down or across the radiator. It isn’t always on but activates when the temperatures start rising. They increase in situations like accelerating forcefully or driving uphill in low gear. If the radiator fan isn’t activating at the appropriate ti...