Loud "helicopter" sound from fan below frunk (cold weather)

[jbny]

I recently noticed a whirling helicopter sound coming from a fan under the frunk. Does anyone know what causes this sound, and if it's a legitimate issue? I recorded it and posted it on youtube (see below link)

The sound happens when the heat/climate system turns off after closing the door. Prior to this, the car had been sitting in my garage, plugged in, for about 24 hours in cold weather (approx 20-40 degrees). The sound was first noticed after warming up the car, then opening and shutting the driver door.

This seems like the same sound described by @plisken in this post:

Rotating clicking type sound coming from front of new model 3

I noticed this yesterday, while sitting in traffic, the sound is from outside the cabin, under the front or "frunk" of the car and the only way to describe it is a clicking or ticking sound. When I got home and parked the car, I got out to investigate and the sound would come and go, in terms of...

teslamotorsclub.com

Any thoughts would be greatly appreciated! Thanks!

 

[Triple D]

Its related to the fan hitting the shroud. It can be caused by ice buildup or a loose balancing weight.
If it was in your garage its probably a fan blade weight. Its an easy fix for service.

 

[jbny]

Thanks for the reply @Triple D! Maybe I'll try to put a space heater in the garage to warm it up a bit and see if that helps. Cheers!

 

[AGW_Prof]

I recently noticed a whirling helicopter sound coming from a fan under the frunk. Does anyone know what causes this sound, and if it's a legitimate issue? I recorded it and posted it on youtube (see below link)

The sound happens when the heat/climate system turns off after closing the door. Prior to this, the car had been sitting in my garage, plugged in, for about 24 hours in cold weather (approx 20-40 degrees). The sound was first noticed after warming up the car, then opening and shutting the driver door.

This seems like the same sound described by @plisken in this post:

Rotating clicking type sound coming from front of new model 3

I noticed this yesterday, while sitting in traffic, the sound is from outside the cabin, under the front or "frunk" of the car and the only way to describe it is a clicking or ticking sound. When I got home and parked the car, I got out to investigate and the sound would come and go, in terms of...

teslamotorsclub.com

Any thoughts would be greatly appreciated! Thanks!

Just heard the same thing today from my M3. It was outside and the temp was 16F so hoping it is just ice.

 

[jbny]

Yeah I think this was just ice buildup. I started to hear the sound less and less as I continued to drive (probably from the battery and components being warmer), then it eventually went away completely once my garage got above freezing temperatures.

 

[AGW_Prof]

Yup. Just ice. As soon as the car was warmed by charging the sound was gone.

 

[sgong6]

Could it be the sound of the heat pump?