B7 RS4 Strange noises inside the dash... HVAC?

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edanmars
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B7 RS4 Strange noises inside the dash... HVAC?

Post by edanmars » Wed Nov 30, 2022 1:31 am

Hello!

Brand new to the forum having just bought a 2007 RS4 three weeks ago, and the dash lights have already started lol. Awesome car, loving the mental V8, but a 14 year old car comes with certain issues it seems.

For starters, I'm hearing a strange series of 'thumps' from the central dash during warm up, approximately 1 per second, repeating 5 - 8 times. Once the car is warm, it doesn't seem to happen, and the colder it gets, the more pronounced the thumps (I'm in Vancouver Canada). It sounds like there is a motor or something trying to operate a flap but can't fully operate.

The HVAC all seems to work correctly, the dampers move correctly when I change the air from up / mid / down, and the noise happens regardless of where the air is directed.

Thanks in advance, and thoughts or advice would be much appreciated!
2007 RS4 Sedan, Imola Yellow
2020 RS3 Sedan, Crystal Black (sold)

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