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Why does the Audi Q5L's fan keep running after parking and turning off the engine?

2 Answers

DiJoy

09/04/25 4:37am

Audi Q5L's fan continues to run after parking and turning off the engine because the fan in the car serves a cooling function. After parking and turning off the engine, the coolant temperature remains high, and the vehicle's computer automatically calculates the fan's speed and duration. The higher the temperature, the longer the fan runs, thereby protecting the engine. This is a normal phenomenon. Location of the car fan: The car fan is installed behind the radiator. When activated, it draws air from the front of the radiator. However, some models have the fan mounted in front of the radiator, blowing air towards the radiator when activated. Operation of the car fan: The fan starts and stops automatically based on the coolant temperature. At high speeds, the air pressure difference between the front and rear of the vehicle is sufficient to maintain the coolant temperature at a certain level, so the fan may not operate under these conditions.

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MacElijah

09/16/25 5:41am

I've recently researched a similar issue. It's common for the Audi Q5L's fan to continue running after the engine is turned off. This occurs because the engine and turbocharging system remain at high temperatures after heavy operation, so the fan keeps working to dissipate heat and cool down components. This is entirely a protective mechanism designed by the electronic control unit to prevent overheating damage. I've observed this behavior in many turbocharged vehicles like the Q5L – it's normal for the fan to run for a minute or two after parking. However, if the fan doesn't stop or operates unusually loudly, it might indicate insufficient coolant or a sensor malfunction, requiring professional inspection. This phenomenon is more noticeable during hot weather or after long-distance driving. Owners shouldn't worry – understanding this principle can make daily vehicle use more reassuring.

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