Question about 2003 Audi A4 Cabriolet
Some cars are designed to have the fan run for a few minutes after you
turn the car off. But if doesn't stop until the battery drains, then it
might be a faulty switch or temperature sensor.
Or, if the fan stays running when the engine and radiator are cool you have a very cheap problem: The fan thermostat is stuck closed. A new thermostat will fix the problem--the hardest part of replacing it is finding it. Follow the wires from the fan to the switch--it is usually on the bottom tank of the radiator. Drain the radiator first and save the coolant to put back in after you replace the thermostat. NEVER OPEN A HOT RADIATOR.
If that wasn't it then check the following:
Hope this helped (remember comment and rated this).
Posted on Mar 24, 2011
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Posted on Jan 02, 2017
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