Question about 2004 Audi S4

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Heating on drivers side does not work, heating on passenger works fine, blowwer works fine on both sides

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In front or on the side of the HEATER DUCT casing (under dash), you'll probably find the skinny stiff WIRE that controls the direction of heat flow .. has either slipped free of it's lever, or the part holding the wire has snapped.

If it's just off.. slip it back into place. If the lever has snapped, you can temporarily attach the wire to the lever with a 'twist tie', circled around both parts repeatedly and twisted firmly .. until you find a replacement part.
Also.. if the control lever (or button) on your heat controls has been used in a sharp or abrupt manner, it may cause the inner plastic flap to break from its mountings. This is a more costly repair.

Posted on Feb 03, 2010


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Posted on Jan 02, 2017


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