[Mi Beardo es Loco]

Yes, I know this is a S Chasis forum but Audi forums are full of obnoxious asses so I'm bringing my questions here.

Well, here's my problem: I have a 96 a4 where someone slightly bumped my front end last year. Didn't notice any difference at the time and, like an idiot, I didn't get her contact info because it was only a nudge. Well, my bumper started to crack and eventually cracked all the way through. Bought a new bumper and didn't fit correctly so took it to my buddies shop where he had to slightly straiten the twin I's because a small bump bent the fram a bit. Yeah, my bad.
But that's not the problem. Since then my ac controller/display has been flickering and when it's on it doesn't EVER blow cold air. I had it recharged and checked for leaks but nothing.
So, I checked the fuses for the ac but the fuses were fine. I just don't understand what it's doing. If there was a problem with the unit then it'll be blinking error codes, but it's not.
Does anyone have any experience with Audi's? particularly the b5's?

Thanks in advance.