We had a period of hot weather shortly after we got our car back in mid March and I saw thru the Tesla app that the cabin overheat protection was working. The temp would get to 105F and then automatically cool down while I was monitoring. Been in the 90s here last few days and thought to check on the temp just now. Temp was at 105F and has subsequently climbed to 109F so far so clearly not working. We did have a software upgrade between the first time I checked weeks ago and today. Currently on 17.11.3. No settings were changed. Wondering if this is a larger issue than just our car? If I'm not mistaken, isn't this protection suppose to be an automatic feature of the 8.0 software? The Tesla website doesn't discuss it at any length from what I can tell. While we don't have pets or kids who'd be in the car, I do feel that the cooling will help protect our 17in screen and the adhesive backing on our Blackvue cameras.