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What is the reason for the Volkswagen Tiguan's fan continuing to run after the engine is turned off?

1 Answers

CarolineRose

09/05/25 6:42am

The Volkswagen Tiguan's fan continues to run for a long time after the engine is turned off because the turbo fan is cooling the turbocharger, which is a normal phenomenon. When driving, it is important to note that you should not turn off the engine immediately after reaching your destination. Since the turbocharger operates at very high speeds, the temperature of the turbocharger in turbocharged models remains high after operation. Turning off the engine immediately can damage the turbocharger and shorten its lifespan. More information about the fan operation is as follows: 1. The delayed shutdown of the fan is for cooling purposes: During operation, the temperature distribution in the entire cooling system is not uniform, and there are localized high-temperature spots. When the water pump stops working, these heat spots cannot be dissipated. Therefore, the fan delays shutdown to facilitate cooling, which is a normal phenomenon. 2. The electric fan is controlled by sensors: Even though the car is turned off, the temperature may not have dropped sufficiently. The electric fan is controlled by sensors. Sometimes, during summer, if the car is parked under the sun, the electric fan may start running even when the car is not in use, as long as the temperature reaches a certain level. This is completely normal. If you want to stop the fan from running, you can turn the ignition switch back on after turning off the engine, but do not start the car—just power on the system. The electric fan will then automatically turn off.

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