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Model 3 “running” while parked

travesty

Member
Dec 9, 2020
31
23
VA
Hi all. Relatively new here - been hanging out in the waiting room until I took delivery of my M3P on the 23rd.

As a new Tesla owner, I’m still learning, so excuse my ignorance...

My car is parked in the garage, and while parked and locked, it sounds like something is still running. It’s a little louder than a refrigerator compressor running. As far as I know , everything is turned off (climate controls, etc.), and I’m not currently charging. Is this normal?
 
  • Funny
Reactions: Gasaraki

ratsbew

Active Member
Mar 3, 2012
1,286
953
O'Fallon, IL
Normal. Not sure why though. Sometimes the pumps run to circulate coolant. Sometimes the hvac runs to dry out the condenser.

I wish that it wouldn't because it wastes energy.
 
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Reactions: travesty

AlanSubie4Life

Efficiency Obsessed Member
Oct 22, 2018
10,050
12,108
San Diego
My car is parked in the garage, and while parked and locked, it sounds like something is still running. It’s a little louder than a refrigerator compressor running. As far as I know , everything is turned off (climate controls, etc.), and I’m not currently charging. Is this normal?

It does this when the car is not sleeping. It also does it for a period of time after parking, sometimes. Anyway the easy way to check if the car is sleeping is to look at the widget (if you have an iPhone), not the app, for your Tesla. It will say click to open app or something if it is sleeping. If not it will give you up to date info.

Car does not sleep for a variety of reasons - sentry can be one. Also, a few other features.

If you are optimally configured for minimum drain, the car will be awake for about 2 hours per day (to recharge the 12V). The rest of the time your car will be sleeping.

It is pretty cold in VA right now so it could be trying to maintain battery temp above a certain level. Normal.

I don’t live in a cold environment, but are you sure about this? Maybe someone who lives in a cold area with a 12V battery monitor could post their data on sleep patterns. My understanding is it has to be EXTREMELY cold to do any sort of wake up to warm the battery. It does not make any sense to wake up to warm the battery if it is 10F or something - that is fine for the battery, as I understand it - you just cannot put any charge into it. So it would be a waste of energy.

Would be good to get some solid data on this (again) from people who have the right monitoring equipment in place, in any case. Just to get the record straight on what to expect for temps from 0F to 40F. There appears to be confusion on “fake” drain due to the battery being cold, vs. actual drain due to some warming features turning on.
 
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JulienW

Active Member
Jul 7, 2018
2,569
2,801
Atlanta
Be carful and park far enough from the back wall since this can happen to anyone.

Sleeping-Dog-Shaking-Body-Funny-Gif-Picture.gif
 

TimothyHW3

Active Member
Jun 2, 2019
1,032
567
Germany
Hi all. Relatively new here - been hanging out in the waiting room until I took delivery of my M3P on the 23rd.

As a new Tesla owner, I’m still learning, so excuse my ignorance...

My car is parked in the garage, and while parked and locked, it sounds like something is still running. It’s a little louder than a refrigerator compressor running. As far as I know , everything is turned off (climate controls, etc.), and I’m not currently charging. Is this normal?
If it is a 2021 model the heat pump will run after you stop the car. I think it should go away after 5-10 minutes. And it will run a little longer than it used to do so with the old ones without heat pump. Probably something to do with the way they designed it. Make sure sentry is disabled and don't open the Tesla app or use any third party apps. This will let the car sleep. Otherwise it will continue to run, like a PC when you just dim the display.
 
  • Informative
Reactions: dhrivnak

murphsmurf

New Member
Dec 15, 2019
2
15
Knoxville
I think this is a recent change for moisture in the climate control system. I will find the fan running for a bit sometimes; I believe it is running air through the system to clear out any moisture that may remain in the ducts. Owners have complained of a musty smell before, and this was a software fix for a hardware problem.
 
  • Informative
Reactions: SummerlinChiro

zecar

Member
Nov 30, 2017
419
287
Chicago
I think it now runs the fan more to dry the AC condenser. Perhaps runs the heat pump for that reason too. Too many stinky HVAC complaints

Anyway, these noises are normal yet mysterious. I just assume the car is doing something useful with my electricity.
 
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Reactions: DaveG_NJ

travesty

Member
Dec 9, 2020
31
23
VA
It does this when the car is not sleeping. It also does it for a period of time after parking, sometimes. Anyway the easy way to check if the car is sleeping is to look at the widget (if you have an iPhone), not the app, for your Tesla. It will say click to open app or something if it is sleeping. If not it will give you up to date info.

Car does not sleep for a variety of reasons - sentry can be one. Also, a few other features.

If you are optimally configured for minimum drain, the car will be awake for about 2 hours per day (to recharge the 12V). The rest of the time your car will be sleeping.



I don’t live in a cold environment, but are you sure about this? Maybe someone who lives in a cold area with a 12V battery monitor could post their data on sleep patterns. My understanding is it has to be EXTREMELY cold to do any sort of wake up to warm the battery. It does not make any sense to wake up to warm the battery if it is 10F or something - that is fine for the battery, as I understand it - you just cannot put any charge into it. So it would be a waste of energy.

Would be good to get some solid data on this (again) from people who have the right monitoring equipment in place, in any case. Just to get the record straight on what to expect for temps from 0F to 40F. There appears to be confusion on “fake” drain due to the battery being cold, vs. actual drain due to some warming features turning on.

Thanks for this info. I did have sentry mode enabled, and after disabling it, it seems to have stopped. I’ll reenable it tomorrow and see if it comes back or not.

Also, is there an iPhone widget still available? I couldn’t find anything about it.
 

theothertom

Member
May 9, 2020
338
228
South Carolina
I dunno....I find mine running hours after exiting the car. I don't think it's the BMS (not cold enough). It stops immediately when I open the door and I have to manually turn the climate control off to keep it off.
 

justsomeguy

Member
Jul 4, 2019
295
288
Vancouver, Bc
It is pretty cold in VA right now so it could be trying to maintain battery temp above a certain level. Normal.
I read this a lot on here, but there's no way it does this. The energy required to do this would completely drain a full battery in a day or two.

EDIT:

Thinking about it a bit, that may be a _bit_ of an exaggeration, but the energy expenditure would be quite a bit more than even running sentry. I think anyone would notice that level of "vampire" drain.
 
Last edited:

drtimhill

Active Member
Apr 25, 2019
1,831
2,266
Seattle
Hi all. Relatively new here - been hanging out in the waiting room until I took delivery of my M3P on the 23rd.

As a new Tesla owner, I’m still learning, so excuse my ignorance...

My car is parked in the garage, and while parked and locked, it sounds like something is still running. It’s a little louder than a refrigerator compressor running. As far as I know , everything is turned off (climate controls, etc.), and I’m not currently charging. Is this normal?

First, the car normally goes to sleep after some time when its parked and locked. This time car vary depending on temperature and other variables. The car may also wake up occasionally to perform housekeeping, such as charging up the 12V battery (yes, there is one, though it's small).

Second, there are a few settings that can change the sleep behavior and keep the car awake. The car stays awake if you have Sentry Mode on (though look at the options that disable this when parked at home/work) or if you have Smart Summon Standby on. You might want to check these settings.

As others have noted, you can deduce if the car is asleep or not by opening the Tesla app. If you see the app "Waking Up" notification for 10 or more seconds, you can be sure the car was asleep.
 

travesty

Member
Dec 9, 2020
31
23
VA
You and me both. I can see the Stats widget, but not a Tesla app one.

When you swipe from left to right from your first iPhone screen, you can add the Tesla app to that screen. Let me know if that doesn’t help, and I can post more details.
 

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