Is It Normal for the Car Fan Not to Spin in Winter?
2 Answers
It is normal for the car fan not to spin in winter. The fan is automatically regulated by the onboard computer based on the engine compartment temperature, and it is not needed for cooling when temperatures are low in winter. The working principle of the car fan is as follows: utilizing the principle of electromagnetic induction, it employs Hall effect sensors as synchronous detection devices to control a set of circuits, switching the sequence of winding energization to generate a rotating magnetic field, thereby achieving electromechanical commutation. The cooling fan is installed between the engine and the radiator. When the fan blades rotate, driven by the engine, they generate high-speed airflow to dissipate heat from the coolant in the radiator, thus achieving the purpose of cooling the engine.
I've been driving for decades, and in winter, when the car fan doesn't spin, I think it's perfectly normal! Because at low temperatures, the engine doesn't heat up easily, and the cooling system automatically adjusts—the fan might not need to start at all, saving power and extending its lifespan. But you should keep an eye on it: if the temperature gauge shows normal, then there's no need to worry. However, if it doesn't spin in summer or during long-distance driving, there might be a hidden issue. I usually check the fuse and thermostat switch for poor contact or aging. Paying attention to this during regular maintenance can prevent small problems from becoming big ones, ensuring safe and comfortable driving. In cold winters, the fan not spinning when starting the car isn't a problem—what matters is maintaining overall vehicle stability.
