New Model Ys & Model 3s Humming Noise Issue

August 29, 2021 (updated December 9, 2021)

Hello and welcome to my page dedicated to my new Model Y's humming noise issue.

REMEMBER: If you have this problem, fill the form below and sign this petition on Thanks!

My name's Fabrizio Ferrari, and I love Tesla. I have been a Tesla fan since its inception in 2003. I have driven Model Ss, Model Xs, and I own a Model 3, and now a Model Y. I have always loved how Teslas are not only super powerful, but super environmentally friendly and hyper-technological (I am a geek and an engineer, so that's my thing!). I have also always enjoyed the fact they were quiet cars. You could drive around just hearing the noise of tires on the road. But is it still like that?

I got my new Model Y on June 26, 2021, and, to my surprise, it had a little but very annoying issue: a continuous humming noise coming from the front trunk (the "frunk").

As I have discussed on the forums, this humming sound seems to come from one of the coolant water pumps, which is part of the octovalve cooling system (thanks to Sandy Munro for his excellent analysis of the system shown in the picture below). And it looks like this problem is affecting many of the newest produced 2021 Model Ys and Model 3s.

Cooling system water pumps

Such a noise starts as soon as you open a door, or the charging port, or even if you open your Tesla app, and doesn't matter if your A/C is on or off, the noise is always there.

Look at the video below, created for the Now You Know YouTube channel where I explain the problem and why I think Tesla should take it seriously: :

JP on the Tesla Motors Club forums:

This is a very serious problem that Tesla MUST solve as soon as possible because it is scaring people away!

So, if you own a new 2021 Model Y or Model 3, please perform the following test:

  1. Make sure your car has been parked and not open for at least 30 minutes. Also make sure it doesn't make any noise and that the A/C is off.
  2. Open the door to see if you hear a humming sound like the one in the video above and make sure it is coming from the front-right part of the frunk. Also make sure the noise doesn't stop unless you close all doors and leave your car alone for at least 5-10 minutes (it can take up to 30 minutes for the noise to stop).
  3. Make sure you can clearly hear the noise from inside the cabin with all doors closed and the A/C off. The noise should sound like having a lawn mower running in front of your car.

If you have taken the steps above and can confirm that your car is affected by the same issue, please report it to your nearest Tesla Service Center and complain about it. Be ready to push with them, asking to compare your car with other ones, because they'll insist saying that the noise is normal, which, in my opinion, is not.

Also: Ask your Tesla Service Center to open an Engineering Ticket about this issue! That'll force them to make an investigation and file the case. The more cases they file about this issue, the more chances we have to have it fixed on our cars. And if your car is still in warranty, timing matters!

I had several trips back and forth to the nearest service center between July and August, and I had to insist a lot to make them understand that this was not something "normal" as they kept claiming. I had to literally ask them to compare my Model Y with other Model Ys that they had in their parking lot, which were completely quiet. Only another Model Y, made around the same time as mine, had the same issue (it was actually even worse!).

So… what's going on here? Well, by talking with the technician, it looks like only a certain number of of cars produced after May 2021 may have this issue. The technician also speculated that, in this last production batch, Tesla could have used lower-quality pumps or other components due to supplier-related shortages. And I think he's right!

To make the story short, I requested to open an "engineering ticket" at Tesla to further research this issue. Their "investigation" consisted of simply coming to my place and taking noise measurements of the water pumps.

After a couple of days, I got a call from my technician at Tesla saying that the engineering team reviewed all the collected information and they confirmed, again, that everything was normal and within their "normal" range, so there was nothing else they could do about it. I asked if I could have access to the documents showing proof that everything was in their "normal" range. They said that those documents cannot be made public. Bummer. How can that noise be normal if most other Model Ys don't have it?

I was very disappointed.

At this point, I think Tesla is not dealing with this problem seriously. In my opinion, there is a kind of defect here which affects who knows how many other new Model Ys and Model 3s.


As of December 9, 2021, the petition has been sent to Tesla Headquarters and Tesla Factory. I'll post any further update about it here as well.

As of October 21, 2021, my Model Y had both water pumps replaced, and the noise is almost gone. Not entirely, but it is at tolerable levels. Of course, I am not completely satisfied with this resolution, and a real fix is still needed!

Also, I got another news from one of the people who signed my petition. This lady had her Model 3 having this issue, and after pushing her service center to replace her car's water pumps, the problem was still there (she had a worse result than what I had after my car's water pumps replacement). Fact is, she requested to open a new engineering ticket for that, and today the head of the team told her the following:

"The engineering team is aware of the problem, and a software update is scheduled to come out soon to address the problem and avoid the pumps running all the time."

This news sounds almost too good to be true. I am wondering how can they fix a mechanical problem via software? I guess, time will tell.

Furthermore, some people have reported having a complete fix of the problem by replacing the entire supermanifold component of the cooling system. You can learn more about that in this discussion. This is exciting news despite I still see too little effort from Tesla to address this problem for everyone in the same way (i.e., some people got lucky enough that service acknowledged and solved the problem right away. Other people had a complete dismissal and an awful experience at their Tesla service center).

I'll make sure to keep this webpage updated with the latest information on this issue. But until this problem is ultimately 100% solved, the petition is still on, and your signature is needed!

So, please be aware that your new Model Y or Model 3, may be affected by this problem, and if so, report it to Tesla immediately. The more people complain about it, it will be more likely that Tesla will take this issue seriously and replace any defective component to once again make our cars quiet. If you are part of the Tesla Motors Club forums, please, post your experience on this dedicated forum as well. The more the better!

Thank you for visiting, and if you have this issue, please fill out the form below. I am building a petition to have Tesla definitively fix this.

If you have the same problem, please add your name to the list!

     On December 9, 2021 we sent our petition to Tesla, asking to fix this issue. But we still need more signatures to make this work best! Tesla is going to check this website for more signatures, so, please, if you have this problem, enter your information below. It will be kept strictly confidential and used only to submit the petition as soon as I have enough people to make it work (your email will NOT be included on the petition, just your name and location). I will also keep you updated about it. The more people, the better!

You should also sign this second petition I have created on, which has been continuously sent to Tesla.

Finally, if you'd like to join the conversation in realtime, please, join us on Telegram. Thanks!
Your name:

Your email (will not be shared!):

Your location:
State or Province:

Your Tesla?

When did you have delivery of your car?

How did you get here?

Comments or details (optional):

For security, please enter the word "tesla" in the field below:

Some of the people that have the same problem and have signed the petition so far: