Hi guys i have discovered another issue with my 2021 M3P and im starting to seriously consider rejecting the car if the service centre do not resolve the faults. On acceleration i can hear a high pitched whine inside the car. Is this normal?
High pitched whine on acceleration 2021 M3P
- Thread starter M3PBOSS
- Start date
It does make a noise as the motors start pushing hard, like a washing machine on spin. But it’s not very loud
VanillaAir_UK
Supporting Member
To avoid future concern, the car will also whine when you are heading towards a supercharger and occasionally when slowing under regen. The noise can change between releases.
Taken on first day of Model 3 UK collections. You can hear the motor whistle as it accelerates away.
Taken on first day of Model 3 UK collections. You can hear the motor whistle as it accelerates away.
Alex987854
Member
It's when the car is warming the battery, it uses a deliberately inefficient mode on the inverter to generate excess heat that's then passed to the battery. You hear it under heavier acceleration or regen braking in normal use for the first 20 mins or so. If you are heading to a SuperCharger then it's aiming to heat the battery even higher, so the noise is more observable.
I quite like it.
I quite like it.
I never heard a whine in my 2019 Model 3 SR+, but I definitely have one when I accelerate hard in my 2020 Model Y AWD. I've read that it's the inverter and the sound (high pitched whistle) originates from the rear of the vehicle. It's not very loud or obnoxious, but definitely noticeable. I can also hear it, to a much lesser extent, when coming to a stop using full regen.
Rustybkts
Member
I hear a fairly deep background woooosh when I floor my SR+ with the music off.
To me it sounds great and needs amplifying.
I have long thought of developing a system of amplifying and possibly modifying the switching frequencies generated by the inverter as it drives the motor because it really is generally similar to the noise an ICE makes as it rises in pitch and harshness as power is applied.
Output it to the external noise maker and everyone is happy!
To me it sounds great and needs amplifying.
I have long thought of developing a system of amplifying and possibly modifying the switching frequencies generated by the inverter as it drives the motor because it really is generally similar to the noise an ICE makes as it rises in pitch and harshness as power is applied.
Output it to the external noise maker and everyone is happy!
Is this whine like a dental drill? If so I would say its definitely not normal. Our 2021 AWD developed this after 2 weeks, most apparent at 20mph (maybe bc road noise) and even when holding speed. Very high pitched and annoying. Noise was never there before that, and appeared suddenly one day. This is not the normal pleasant motor acceleration noise.
Have you had the noise investigated? I also have a 2021 AWD. Not driven the car for a while, bit from memory it made a few odd sounds that I attributed to the heat pump. Seems to emit all sorts of grumbles.
Currently in service at PR London. They said they'd look into it. We did some digging and other TMC members say it could be the RDU ground strap.. we have noticed the car making sounds and growling (thought this was cute actually) but this is like a constant dental drill whine which would drive anyone mad!
I’ll have to tune my ears next time I go out. Not noticed a constant whine from memory. Please keep us updated
