Weird A/C problem...
 

2004 3i bought used from a dealer in November. The a/c kicks on by itself any time the ventilation control is set anywhere from full floor to full defrost. I had always heard a sound during start up, but didn't realize it was the a/c until the weather got warmer. This doesn't happen when the dash vents are used. Any thoughts? Thanks

yah thats pretty much how the 3rd gen proteges work too.

It's how most new cars work, nothing to be worried about. I just wish the car notified us by turning on the A/C light.

Thats a new one for me. The a/c in my wife's 2000 Sienna turns on when in the defrost positions, and at least its mentioned in her manual. Having the a/c turn on in a 'floor' setting makes no sense. Thanks for the reply.