At what temperature does the fan of Audi C7 start working?
2 Answers
The radiator fan of the engine starts working at around 90 degrees. When the temperature reaches approximately 105 degrees, the fan begins to operate at a high-speed setting. The radiator fan automatically turns on only after the vehicle's engine has been running for a certain period, and the temperature rises, causing the engine's coolant temperature to increase. The function of the car fan: The car fan blows towards the radiator to cool it down and dissipate heat from the engine. When the fan rotates, it creates suction, accelerating the airflow along the axial direction, which speeds up the cooling of the coolant flowing through the radiator core. At the same time, it helps cool the engine block's outer shell and surrounding components. Engine cooling system: Automobile engines operating in high-temperature environments must be adequately cooled to maintain an optimal working temperature. This ensures the engine's good performance, durability, and compliance with exhaust emission requirements.
In the Audi C7, the fan typically activates when the coolant temperature reaches around 105 to 110 degrees Celsius to cool the engine down. I've driven this car several times, and it's most noticeable during summer traffic jams—once the temperature gauge exceeds 105 degrees, the fan starts humming to help dissipate engine heat. If the coolant temperature is lower, say below 100 degrees, the fan remains idle, as this is designed to protect the engine and prevent premature wear of internal components. However, note that the fan won’t activate immediately after a cold start; it waits for the coolant to warm up. The fan control relies on the thermal module in the cooling system, which operates based on the coolant's condition. If the fan doesn’t respond, it could indicate a faulty thermal switch or loose wiring, so it’s best to get it checked to avoid major repairs. In short, keeping the coolant topped up and avoiding prolonged high temperatures during long drives ensures the fan can properly safeguard your car.
