Phantom Cabin Heater...

[Olds442]

ok so i'm not the only one with a car that decided to get warm the other morning. good to know.

 

[brkaus]

I have a suspicion that turning on the climate control from the app now sets camper mode on, rather than just turning on heat for a limited time. Haven't really tested it, though. Still doesn't explain heating above the temperature setpoint.

This definitely appears to be the case.

 

[N4HHE]

My Model S is a December 2013 and just got a new heater core. Last few times before Christmas I drove with the HVAC off. But after Christmas I allowed 2017.50.2 to be installed then the first drive found no heat. The SC remotely confirmed hardware problem so to the "spa" my car went.

On return I had no end of problems controlling the heater from the iOS app. Could turn it on/off but temperature controls were wonky. Then I sat in the car and found the "auto" modes on HVAC were customized. Not sure what all was set other than HI. Reset to auto and normal operation resumed. New heat still smells different.