I think my AC button is stuck in the On position! I turned my AC on today to see how cold it would blow :) when I turned it off the green light on the button went off, but it continued to blow Cold air for a LONG time. I have a 95 M3 with the "dials" When I got home I tried pressing the button, it would light green as I pushed it in.. then turn off as I pushed it in as it should, but I didn't hear any change in sound coming from the engine bay. I was expecting to hear the compressor engage. The car is still under the factory warranty so I guess I'll have the dealer check it out, but I thought I would run it by you guys. Is this a common problem? Can you hear your AC kick when you turn it on?