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unwanted cabin overheat protection?

Tha_Reaper

Member
May 13, 2019
89
47
Belgium
In the last couple of weeks ive noticed that there is some kind of cabin overheat protection on in my model 3, while i disabled it from the moment that i got the car.
I first noticed that during a very hot period my car would not fall asleep while parked in the sun. Indoor temperature would not exceed 39 degrees celcius (102F) while it should be way hotter inside.
At that moment i blamed it on the high temperature, and battery pack protection, but why the cabin stayed below the 39 degrees was a mystery. i observed it for a couple of days and every time 39 degrees seemed to be the max, and the car stayed awake during the day in the sun.
today the car is outside on a relative cool day (20C / 68F), but in full sun. Again that 39C max interior temp... untill the battery dropped below 20%. now the car is 56C / 133F inside and COP seems to have stopped. normal behavior for the standard COP... but i have that disabled. Why is it doing this? more people with a similar experience?

ps: sorry if this has been discussed before. I searched but didnt find a compareable thread.
 

Tha_Reaper

Member
May 13, 2019
89
47
Belgium
I've had this happen once before restarting MCU fixed this issue.
location So Cal... you must have experience with high temps ;)
I have this problem for multiple months now (just didnt realize it wasnt normal for some time). I have done a couple of soft resets in that time, but those havent worked. What kind of reset did you do? Hard reset, or power off?
 

Octo

Member
Jun 28, 2019
386
525
Dallas
I understand that some want to disable this feature.

Here in Dallas, it’s one of the best features I ever had in a car. Even without pre-cooling, it’s never ultra hot inside even when I get into the car after it sat in the sun the whole day.
 

Tha_Reaper

Member
May 13, 2019
89
47
Belgium
It could be the AC system clearing out the moisture to prevent odors. There was an update recently.
As far as I know that should run the fans for a couple of minutes after using the AC. Not when the car has been standing still for some time... Could be mistaken though
 

Tha_Reaper

Member
May 13, 2019
89
47
Belgium
Do you know the damage extreme heat can do? I never turn it off.
Cars have been able to withstand those heats for good knows how long now. It shouldn't be any different in a Tesla unless they skimped on the use of automotive graded parts (such as the yellowing screens of the model s).
 

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