Encountered my first significant issue with the MS since getting it 26 months ago. The HVAC stopped working. While this isn't a major drivetrain issue, anytime you lose your HVAC in 116 degree Phoenix heat when 40 mies from home with 2 kids under 5, it's significant. We were visiting friends this afternoon and had the car parked in front of their house. So, yes the car was baking in the sun (as it has countless times since we got it). About 20 min prior to leaving, I started the HVAC to pre-cool the car. When we went to the car, it was still hot as heck. I thought, ok, maybe because it was so hot and sunbaked, the HVAC didn't have enough time to get the car cooler. We proceeded to drive, but quickly noticed the AC was blowing HOT air, hotter than the air from the windows that we had to open to cool ourselves down. About ⅔ of the way home, I dropped my wife and kids off at a Target so they could cool off and do some shopping while I drove home to switch to our Leaf. I called Tesla and of course they said they could only 'open a case for the local service center to get back to me on Monday.' I can make that work (though it does put a bit of a limit on our plans for tomorrow), but I couldn't help but wonder what would have happened if it went out when we were somewhere between SCs. I was little less than satisfied with their response because again, no AC with young kids in 115+ degree weather is a serious issue. In retrospect, I know for certain the fans were running when we got in the car. But I did notice that the loud jet sound wasn't present. And I double, triple, and quadruple checked that all the settings were right on the car ride home. Dead compressor, I suppose.