What is the reason for the fan running continuously after replacing the water pump in the Tiguan?

1 Answers
McAnastasia
07/30/25 5:19am
The reason for the fan running continuously after replacing the water pump in the Tiguan is that air has entered the cooling system, which needs to be bled. Below is relevant information about the car's electric fan: 1. Electric fan control method: Unlike engine-driven fans, car electric fans need to adjust their working status based on coolant temperature. Some are controlled by the vehicle's ECU, while others operate via a thermistor switch. Different cars have different electric fan control methods. 2. Composition structure: Generally, the electric fan assembly includes the electric fan, bracket, temperature sensor, thermostat switch, relay, wiring harness, etc. If the car's electric fan fails to operate, troubleshooting can be conducted based on the above factors.
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