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Car heating up when parked upwards of 90 degrees farenheit

dkde

Member
Mar 27, 2019
31
8
Bethesda, md
I have a Model 3 LR AWD. The car appears to heat up on some days when parked at work. When I say, heating up, it is sometimes as high as 103F when ambient temperature is sub-freezing. The service center found nothing wrong (but did confirm that the temperature was high). Tesla claims the Tesla app is triggering heat (yet if you open the app it doesn't show HVAC is on and obv my set point is not anywhere near that warm).

Today, for example, ambient temperature was in the low 50s. I have location services only on if the Tesla app is open. App was never opened until in got ready to go home around 4:30pm. At that point, the temperature in the car was reading over 90F. AT this juncture Tesla doesn't seem overly interested in finding a solution.

Has anyone else experienced this? Solutions?

thanks!
 

tes-s

Active Member
Oct 6, 2013
2,839
3,612
CT
Is the cabin being heated by the battery, or by the sun?

A couple of ways to tell are:
1. Does it happen if the car is parked at night? Or in a garage? Or on a day when there is not much sun?
2. Does the battery level go down?
 

Dana1

Supporting Member
Supporting Member
May 20, 2018
882
547
Houston
I have a Model 3 LR AWD. The car appears to heat up on some days when parked at work. When I say, heating up, it is sometimes as high as 103F when ambient temperature is sub-freezing. The service center found nothing wrong (but did confirm that the temperature was high). Tesla claims the Tesla app is triggering heat (yet if you open the app it doesn't show HVAC is on and obv my set point is not anywhere near that warm).

Today, for example, ambient temperature was in the low 50s. I have location services only on if the Tesla app is open. App was never opened until in got ready to go home around 4:30pm. At that point, the temperature in the car was reading over 90F. AT this juncture Tesla doesn't seem overly interested in finding a solution.

Has anyone else experienced this? Solutions?

thanks!
If the source is the heater and not the sun, if you set climate to ambient temperature does this short circuit the issue? Sorry to hear this.
 

Diesel123

Member
Aug 27, 2018
52
44
Ontario
I had the SAME thing happen today. Car was sitting in 7-10 degrees outside parking lot for 8hrs. Temp on my phone said 36 degrees Celsius ?? (I’m Ontario Canada).

My set point in app and car is always 21 - 21.5 degrees C. Never any higher than that.


Unfortunatley my wife was using the car today- and don’t know 100% first hand if car was actually 36 degrees when she got in.....
 

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Dana1

Supporting Member
Supporting Member
May 20, 2018
882
547
Houston
Black interior plus sun equals hot. In the summer can get over 140F.
Nope, not unless you’ve disabled climate protection. It kicks on at 105 to protect tablet. I’ve tinted my windows and here in South Texas did not experience above 105-ish.
 

Ezri10

Member
Aug 13, 2018
101
163
New Jersey
Nope, not unless you’ve disabled climate protection. It kicks on at 105 to protect tablet. I’ve tinted my windows and here in South Texas did not experience above 105-ish.
It's NOT WORKING unless you TURN OFF THE ALARM in settings!

Reade the note when pressing next to the alarm in the car settings.
 
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dkde

Member
Mar 27, 2019
31
8
Bethesda, md
If the source is the heater and not the sun, if you set climate to ambient temperature does this short circuit the issue? Sorry to hear this.
Tesla claims that heat is turned on by the app (yet the app shows climate control is off....). The car will be in the garage at work, in the parking lot with limited sun... The set point is in the mid 60s when it is on. It only seems to happen at work, however. but doesn't happen every day. because the seats feel warm I suspect it's not actually the HVAC that goes on, but the heated seats (they don't show as on, but I suspect they are warming up). Before the firmware update from a couple of weeks ago it would turn the AC on when I hit start climate control and also turn on the seats (to the one flame setting). Which seems completely bonkers.
 

dkde

Member
Mar 27, 2019
31
8
Bethesda, md
I had the SAME thing happen today. Car was sitting in 7-10 degrees outside parking lot for 8hrs. Temp on my phone said 36 degrees Celsius ?? (I’m Ontario Canada).

My set point in app and car is always 21 - 21.5 degrees C. Never any higher than that.


Unfortunatley my wife was using the car today- and don’t know 100% first hand if car was actually 36 degrees when she got in.....

two examples here for me...
IMG_4158.PNG
IMG_4158.PNG
IMG_4164.PNG
 

JayNJ

Member
Jul 13, 2018
247
147
New Jersey
Nope, not unless you’ve disabled climate protection. It kicks on at 105 to protect tablet. I’ve tinted my windows and here in South Texas did not experience above 105-ish.
Yes I always have it disabled. Tesla claims the feature is to protect children. I don't want to run my battery down all day. If the electronics can't handle it then that is a design issue and warranty repair.
 

PoitNarf

My dog's breath smells like dog food
Jun 7, 2016
2,870
4,317
NJ
Black interior plus sun equals hot. In the summer can get over 140F.

Yep, during the last summer I saw reported interior temps as high as 145 degrees Fahrenheit. Even during the winter on sub freezing days my car could easily reach interior temps in the 50s if left in the direct sun. You don’t realize how hot the inside of a car can get just from being in the sun until you’ve got a way to get a temperature reading.
 

JayNJ

Member
Jul 13, 2018
247
147
New Jersey
Nope, not unless you’ve disabled climate protection. It kicks on at 105 to protect tablet. I’ve tinted my windows and here in South Texas did not experience above 105-ish.
I'll add most electronics are rated to operate up to 80C (176F), storage up 120C (248F).
 
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brobinson

Member
May 23, 2018
621
704
Ohio
I started noticing this behavior with 5.15. I attributed it to some warmer days last week, but agree that the interior temperature was reading way higher then it normally would.
 

jat255

Member
Sep 11, 2017
108
83
Boulder, CO
One other interesting thing I've noticed is that the car heats up a small amount every 2 hours (this is with sentry mode on):

upload_2019-4-1_9-17-35.png


I don't know if it always did that or not, since I just got this API scraper up and running on the most recent firmware, but that could be part of what you're seeing as well. Not sure what the car is doing to heat itself up in that time.
 

dkde

Member
Mar 27, 2019
31
8
Bethesda, md
Yep, during the last summer I saw reported interior temps as high as 145 degrees Fahrenheit. Even during the winter on sub freezing days my car could easily reach interior temps in the 50s if left in the direct sun. You don’t realize how hot the inside of a car can get just from being in the sun until you’ve got a way to get a temperature reading.

Cold winter days I wouldn’t think 50s abnormal either in the direct sun. The fact that mine reaches 100+ in not direct sun I’m freezing weather on the other hand. Tesla claims that my app is triggering the heat to come on (even though app shows Hvac as off). This clearly is a flaw in the software for some of us.
 

dkde

Member
Mar 27, 2019
31
8
Bethesda, md
One other interesting thing I've noticed is that the car heats up a small amount every 2 hours (this is with sentry mode on):

View attachment 392432

I don't know if it always did that or not, since I just got this API scraper up and running on the most recent firmware, but that could be part of what you're seeing as well. Not sure what the car is doing to heat itself up in that time.
What app is this? Thanks!
 

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