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What are the reasons for the Audi A6 air conditioning radiator fan not rotating?

3 Answers

AdrianaLynn

09/05/25 5:57am

Audi A6 air conditioning radiator fan not rotating reasons are as follows: Coolant temperature not reaching the required level: Most modern car radiator fans operate with electronic temperature control, so the fan normally starts rotating only when the coolant temperature inside the car reaches the required level. If the temperature is too low, the radiator fan will not rotate. Relay malfunction: If the coolant temperature meets the requirements but the car radiator fan still does not work, it could be an issue with the fan relay. If the relay malfunctions, the car's radiator fan will also fail to operate.

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Rodrigues

09/17/25 6:20am

I've been driving an Audi A6 for years and once encountered an issue where the AC fan wouldn't turn on, making the car unbearably hot in summer. After some research, I found several possible causes: the fan motor might be burnt out or the bearings could be seized; on the electrical side, a blown fuse is quite common, and you can find the corresponding fuse in the engine compartment's fuse box; another possibility is a faulty temperature sensor not sending the signal to start the fan, or a malfunctioning AC high-pressure switch causing the fan to stay off as a protective measure. If not repaired promptly, the AC cooling efficiency drops, the engine may overheat and damage other components, and fuel consumption could increase. My advice is to first check the fuse and whether the fan connector is loose. If that doesn't solve the problem, take it to an authorized 4S shop immediately—don't skimp on repairs and risk bigger issues. Regular maintenance should include checking the fan's operation, especially during summer and autumn seasons.

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EmersonAnn

10/31/25 6:49am

Recently, the air conditioning fan in my Audi A6 stopped working, leaving the cabin uncomfortably hot when the AC was on. After troubleshooting, possible causes include a faulty fan motor that may need replacement, a common relay issue disrupting power control, or unstable battery voltage leading to insufficient power supply. A non-functioning fan can increase pressure in the AC system, shortening the compressor's lifespan and leading to costly repairs. I tried a simple DIY check by replacing a fuse in the fuse box, which got the fan running again, saving some money. However, I recommend those without experience avoid tampering with electrical circuits to prevent short circuits. Regularly listen for reduced fan noise while driving and address issues promptly—safety first. After fixing the fan, the AC cooling became immediately comfortable again.

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