In my wife's recently bought '09 500 sport the aircon has just stopped working. It's been regassed recently by a reputable local family garage and has been working fine. I noticed that when the aircon is switched on there's a noise coming from what appears to be slightly left of centre of the dash - a sort of fan sound (but different from the variable speed fan). Sounds like the magnet is kicking in - anybody have any helpful ideas. I can't see any obvious leaks.