I have both the aux heating and cooling option with the seperate remote control. During summer, I experimented a couple of times with the remote. The problem I had was that the car would only heat the car no matter what the outside temperature was.

I just tried the remote again (its 12 degrees outside) and the car heats up. During the really hot summer days, I tried the same thing and I would get back to the car and it would be a suana!

I'm taking the X in for its first service and will hound the dealership for answers. Will keep you guys posted.