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Old 11-30-2012, 07:01 PM   #6
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Join Date: May 2010
Location: Lombard, IL
Posts: 2
My Ride: 2004 330i ZHP
If you pull your volume knob, there supposedly is a tiny nut behind it that loosens up. This thread explains how someone fixed it by tightening the nut with a pair of needle nose pliers.

I have a similar problem with a loose knob that does not adjust volume correctly. I have not tried the fix yet...
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