So glad I found this community. I have been experiencing this issue on my Model 3 (I know this thread is under the Model Y community, but couldn’t find much documenting this exact issue on the model 3).
My car is a September 2022 build Model 3 Long Range which I picked up in late September. We had an unseasonably warm fall and i had a blissful 4-6 weeks without experiencing this high-pitched pulsing whining/hissing sound. Since the temperatures started dropping below freezing here in Minnesota however this has been a frequent annoyance. Didn’t consider that it could be temperature related until reviewing the experiences of others in this thread.
I took my car in for a service appointment on December 9th and the SC stated they were able to replicate the issue and that it was due to an improper penthouse seal on the battery. After having my car for a week I was excited to get back to driving and enjoying my Model 3. Picked it up on December 15th and was extremely disappointed to hear that the noise was still there.
View attachment 889079
In the week after picking up the car
I started to document what I was hearing and took this video. Curious for others to see if this matches what they are hearing. There being a whine by itself would be annoying, but the constant pulsing really drives me crazy…
On the 20th I took the car back in for service and was asked to drive with a technician. He told me he could not hear the issue and that the noises the car was making were normal. To be fair, I did feel the noise was being quieter than normal during the technician drive (murphy’s law at work…) but even in the video I showed him he just said “there are a lot of sounds there but I don’t hear anything weird”. Basically told to leave and return if it gets louder. Very frustrating as to me this sound is definitely NOT normal.
I have another appointment scheduled for the 28th at a different service center. Hoping to get someone who is willing to help; whether the answer is grounding strap tightening, front drive unit replacement, or something else. I’ll keep everyone updated on my experience.