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Why does the Passat's fan keep running after the engine is turned off?

1 Answers

Clifford

07/29/25 2:07pm

Passat's fan keeps running after the engine is turned off for the following reasons: Normal phenomenon: The fan in the car serves a cooling function. Therefore, when the coolant temperature is too high after parking, the vehicle's computer automatically calculates the fan's speed and duration. The higher the temperature, the longer the fan runs to protect the engine. This is a normal phenomenon and nothing to worry about. Loose circuit connection: If the fan runs for an excessively long time and continues even after the engine temperature has dropped, it might be due to a loose circuit connection. You can try disconnecting the fan's wiring harness to cut off the power separately. Damaged coolant temperature sensor: If the fan keeps running continuously, it could also be due to a faulty coolant temperature sensor or a stuck fan relay contact. In this case, simply visit a repair shop to replace it with a new one.

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