Picked up a new M3P in mid-November, 2021. Love the car. During these winter months have been using the heated steering wheel feature and also the heated front seats. Whenever I, the wife, or both of us, leave the car (park it), we manually turn everything off. This has worked just fine, until early this afternoon. Went out to lunch and came back home. Plugged the car into our wall charger (it was at ~160 miles range left). Twenty minutes later the wife decides to go to the mall. And hour into her shopping I get the notification about cabin overheat. I open the app on my 2nd gen iPhone SE and it is reporting the cabin temp at 100F while 50F outside. The app isn't showing anything on. No heating element and no AC/heat. I tapped the 'vent' just in case because I've sat in this car before while completely off and its never gotten anywhere near 80'sF.
I then called the wife and she went out to the car. She verified that window venting did open the windows. She got inside and said it wasn't anywhere near being hot. She sat there with the windows down for about ten minutes and then moved the car to another part of the mall parking lot--away from other vehicles. She went back inside and I monitored the app and once again the temp began to climb again, but this time also the outside temp being reported climbed, too (50-->55F). I then noticed in the Climate section of the iOS Tesla app the steering wheel heat came on--all by itself. I tapped it to turn it off. Then the climate control kicked on and the iOS shows the blower goingas it was reporting the interior temp climbing again into the high 80'sF.
Wife went back out to the car and conducted some palm testing on the seat surfaces, the floor boards, the walls of the truck, etc., to see if heat was being generated but everything seemed normal. My thought if a cell had gone bad and being LiON that would more certainly generate heat. But the wife found no unexplained hear sources. She is now home and the car is parked in the driveway (not the garage) and everything seems stable. iOS app version is 4.4.4 and just noticed there is an update (4.5.1). Car software is on version 2022.4 if that helps.
I then called the wife and she went out to the car. She verified that window venting did open the windows. She got inside and said it wasn't anywhere near being hot. She sat there with the windows down for about ten minutes and then moved the car to another part of the mall parking lot--away from other vehicles. She went back inside and I monitored the app and once again the temp began to climb again, but this time also the outside temp being reported climbed, too (50-->55F). I then noticed in the Climate section of the iOS Tesla app the steering wheel heat came on--all by itself. I tapped it to turn it off. Then the climate control kicked on and the iOS shows the blower goingas it was reporting the interior temp climbing again into the high 80'sF.
Wife went back out to the car and conducted some palm testing on the seat surfaces, the floor boards, the walls of the truck, etc., to see if heat was being generated but everything seemed normal. My thought if a cell had gone bad and being LiON that would more certainly generate heat. But the wife found no unexplained hear sources. She is now home and the car is parked in the driveway (not the garage) and everything seems stable. iOS app version is 4.4.4 and just noticed there is an update (4.5.1). Car software is on version 2022.4 if that helps.
