In need of some help. My AC on my car has been out a while and we've been having trouble getting it fixed. It's a 2003 jetta tdi. It's at a shop right now and the mechanic has determined it's a computer problem. I'm looking for someone that could possibly fix it, or tell me what needs to be done to fix it. Really don't want to have to go to the dealer, thanks for the info in advance.