Haven't driven my car in a few hours and I just walked by it and heard it making a sound while off. Sounds like its coming from the vents and seems to be blowing a little bit of air from underneath the hood. Is there some kind of cooling system that operates when the car is shut down? I was totally unaware if so. It is ridiculously hot in L.A. right now and I have a black Model S so it's definitely taking some serious heat in the sun. Any idea? Thanks in advance.