Crackling Noise in Frunk

[idriveacar]

I own an MY and am currently out of state, renting a 2022 MS off turo.

After supercharging tonight to 70%, when I arrived at where I'm staying, I noticed a super weird crackling noise coming from inside the frunk.

Streamable Video

Watch this video on Streamable.

streamable.com

It almost sounds like it could be electrical. But the MCU isn't reporting any faults.

Anyone have any ideas what this sound is?

Thanks!

 

[idriveacar]

It stopped right after the video, after I turned climate on and then back off again. Also it's in the 30s where I'm at right now.

 

[vcor]

Sounds like ice particles inside the coolant loop are being pumped around, even though the coolant is supposed to remain liquid well below freezing. Likely related to the heat pump running, but not sure it's anything to worry about. If the temperatures are at 30F, the heat pump will create far cooler temperatures in the lines as it extracts heat from the environment to warm the battery/cabin. I could see it having coolant temps well below 0F in this situation. Could also be noise from the HVAC's expansion value.