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Humming noise while parked in garage

apacheguy

S Sig #255
Oct 21, 2012
5,111
1,305
So Cal
Twice in the past week I’ve entered my garage and been greeted by my 3 making a noticeable humming noise. Tonight I was able to reach in throuh the drivers window (which I had left open) and I could feel air blowing down in the footwell.

My initial thought was that I accidentally switched climate control on with the app but the app shows climate control is off. I the opened the door and immediately the fan switched off.

Garage is 70 F so there is no reason for any thermal management/cabin overheat. What’s going on?
 

mswlogo

Well-Known Member
Aug 27, 2018
6,344
5,453
MA, NH
I never went digging for any fan running in the cabin. But it could simply be your car is not sleeping. Lots of stuff runs and hums when car is not sleeping.

Mine has been a ton better the last month with warmer temps and newer builds.

Note that Sentry mode will prevent the car from sleeping. Also apps might affect it.
 

apacheguy

S Sig #255
Oct 21, 2012
5,111
1,305
So Cal
The car does stay awake randomly at times but it never runs the cabin fan while doing so (at least not until this past week). This had nothing to do with the battery or other internal components since it wasn’t the radiator but rather the cabin fan that was running.
 

MRPLUGIN

Member
Jan 8, 2017
89
98
Utah
My car is also doing this, I heard it one other time (definitely the cabin fan running you can hear it at the intake for the cabin fan right side of upper firewall. Last time I opened the door and it shut off. This time I will let it run for a bit and check the battery usage. Sure its a software bug, but how long will it run for? Will update later.

Seems it shut off after about 20 min.
 
Last edited:

Ludalicious

Active Member
Feb 22, 2018
1,105
1,433
Vancouver
the humming on mine was minimal for the first year. But got louder over time. The other week I mentioned it when I took my car in and they replaced the fans upfront and haven't herd a thing sense. I believe the replaced a cooling fan under the front drivers corner. Just going by the information the service centre gave me. Not too sure if the model 3 has the same fans
 

Allx

Member
Aug 28, 2018
96
52
NJ
Last edited:

Gadgetboyea

Member
Mar 22, 2018
33
15
Denver
My week old model 3 seems to never shut down, It makes a whirring noise all the time. Garage is 60-70 degrees F and it doesn’t seem to be a fan noise. My model S was dead silent sitting in the garage. I’ve also noticed a constant battery drain of about a mile a hour. I will link a YouTube recording of my sound.
 

Ludalicious

Active Member
Feb 22, 2018
1,105
1,433
Vancouver
My week old model 3 seems to never shut down, It makes a whirring noise all the time. Garage is 60-70 degrees F and it doesn’t seem to be a fan noise. My model S was dead silent sitting in the garage. I’ve also noticed a constant battery drain of about a mile a hour. I will link a YouTube recording of my sound.

Ya that's the same humming sound I was having on my model S. Has since gone away since the new fans have been installed. They replaced them without any hesitation. Hard to tell from the video but mine was fairly loud
 

Austindude

Member
Sep 26, 2017
318
424
Austin, TX
My car is also doing this, I heard it one other time (definitely the cabin fan running you can hear it at the intake for the cabin fan right side of upper firewall. Last time I opened the door and it shut off. This time I will let it run for a bit and check the battery usage. Sure its a software bug, but how long will it run for? Will update later.

Seems it shut off after about 20 min.
My car is now doing the same thing after a drive and parked in he garage, something keeps running for around twenty minutes. It has been hot here lately so that may have something to do with it. I have only noticed this after software update 16.2.
 
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Reactions: apacheguy

apacheguy

S Sig #255
Oct 21, 2012
5,111
1,305
So Cal
Cabin fan if the computer was communicating with the alien mother ship and it needs cooling.

Garage was 70 F and I had the front windows open so nothing was overheating. Besides, the infotainment system is liquid cooled in the 3 and it is independent of the cabin conditioning system.

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First time it’s this loud but also first road trip since 209.16.2...
This was after going back to the car after a while to get something. Opened the door and fan kicked in. I’m assuming AC compressor or something like it.

Nah, mines nowhere near as loud as that. You definitely had the compressor running whereas my noise is due to the cabin fan only.
 
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