Short version: Just wondering if the Tesla's automatic cooling of the batteries works if you're driving but don't use the AC Longer version: I live in Tucson, AZ, and frequently come up to my Tesla after sitting in the sun all day and hear fans going. I assume this is the active cooling system for the batteries. Being the desert rat that I am, even though the temp is 90+ I usually just open up the roof and drive home without AC. When I get home, as soon as I shut the door of the car I hear the fans kick in again. This has gotten me wondering if I'm possibly doing harm to my Tesla (2015 Model S 70) by not using the AC on 'warm' days. Is there possibly a bug in the Tesla battery cooling system that assumes if it's hot enough for the car, that the passenger would have the AC on? Or perhaps I'm just misunderstanding the noises I'm hearing and all is fine? Any info on this would be greatly appreciated.