2004 A4 ac question.
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Audi Forum - Posts like an A3
Joined: Feb 2011
Posts: 59
From: vancouver
Re: 2004 A4 ac question.
One more comment. Most people with these systems that I know simply leave the "Auto" function on all the time, 365 days/year and merely adjust temp setting to where it feels comfortable. I went for years without taking system off Auto. Just set temp to 22C for winter and 23C for summer. Sometimes minor 0.5C adjustments are required depending on sunshine, clothing, etc.
Audi Forum - Posts like an A4
Joined: Jul 2010
Posts: 161
From: Toronto
Re: 2004 A4 ac question.
postscript: You will note, that when you switch to Defrost, the Auto function will be turned off and fan will usually come on to max speed. Mine works fairly fast in defrosting/defogging fogged up windows. You can always adjust manually to your taste and comfort and then switch back to Auto at any time. Unfortunately car isn't smart enough to know when windows are fogged up. Since I garage park my car, I sometimes get fogged up pretty quick with the rapid and drastic temp changes, or when my wife is breathing too hard 
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