I want to repair my Volkswagen Passat '07 A/C. I've taken it to two shops (dealer and independent) and they both say the entire a/c system needs to be replaced. The strange thing is, that sometimes it actually comes on and when it does it works great. The rest of the time I can't get it to come on at all.
Is there a way to force the A/C to stay on when I tell it? I've heard that there is a limiter that keeps the compressor off when certain sensors are not reading correctly to protect the compressor from damage. In my case though they're recommending replacing the entire system so I don't see any problems forcing it to work until it can't cool anymore. Also does it make sense that I need a new compressor when it works great sometimes?