Question about 1999 Audi A4

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Air Conditioning Filtration


I just bought an 1999 Audi A4 for my wife and whenever we have the a/c on and the windows closed, we can still smell everything from outside - from exhaust smoke of other vehicles, etc. Does anyone know what's causing this?

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Here you can see how to change the cabin filter on the 1999 A4.
The text is in Portuguese but the pictures can give you an idea.

Posted on Aug 30, 2009


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There is a filter that is for that... it is called a cabin air filter, I am not positive of the location for your make but they are usually located near the passenger foot area under dash.

Posted on Aug 24, 2008


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