Squeaking sound from wheels during rolling start/Brake Noise (merged)

[qbee42]

Brakes do that. Most cars are noisy enough that you don't hear them. Prius brakes are worse than most since they don't get much use. You can clean the brakes by forcing the car to use friction braking. Find an open stretch of road, get up to 40 mph or so, shift into N and apply the brakes to slow down. Repeat a few times and it will wear off the rust.

Tom

[Bambam650]

Yep, I have it too. Be interested in hearing what a dealer has to say about it.

[Karalyn78]

Originally Posted by nemrut

Anyone notice a squeaking sound coming from somewhere in the tires when driving the car for the first time of the day?

I have the same problem with my Prius. I took it to the Toyota dealership today and said it was the plastic hubcaps over the tires. They drove two other 2010 Prius's while I was there and they had the same problem. The guy told me "You aren't going to be the only one with this problem, we can usually lube he tire and the sound goes away, but this different." He said its a cosmetic problem, not a mechanical one, but agreed, it made the car sound cheap and was annoying. He'll be calling me in a few days with what the factory has told him that we can do.

[georgew]

Thanks Karalyn.

Originally Posted by Karalyn78

I have the same problem with my Prius. I took it to the Toyota dealership today and said it was the plastic hubcaps over the tires. They drove two other 2010 Prius's while I was there and they had the same problem. The guy told me "You aren't going to be the only one with this problem, we can usually lube he tire and the sound goes away, but this different." He said its a cosmetic problem, not a mechanical one, but agreed, it made the car sound cheap and was annoying. He'll be calling me in a few days with what the factory has told him that we can do.

[ahn22]

I purchased 2010 Prius 3weeks ago. I noticed a noise(squeak) Whenever I apply the brake at that time when I picked up my new car from dealership. So the next day I went to the Toyota service center and heard "Every Prius break system makes that noise and it is Normal".
Is it true?? The dealer said it comes from the hybrid system.... After three weeks driving I've come to doubt that every Prius owner can stand the squeak noise and Feeling. Is it really normal? Does everyone hear it?

[anniea]

Originally Posted by ahn22

I purchased 2010 Prius 3weeks ago. I noticed a noise(squeak) Whenever I apply the brake at that time when I picked up my new car from dealership. So the next day I went to the Toyota service center and heard "Every Prius break system makes that noise and it is Normal".
Is it true?? The dealer said it comes from the hybrid system.... After three weeks driving I've come to doubt that every Prius owner can stand the squeak noise and Feeling. Is it really normal? Does everyone hear it?

I have never heard a squeak. When braking there is a noise that sounds something like a subway train braking (others have noted that too), but that's not an unpleasant sound, and I wouldn't describe it as a squeak or squeal.

[qbee42]

The regenerative braking system makes a whine, similar to the motors on a subway. It isn't terribly loud or annoying, but it is obvious. There is also inverter switching noise, which is at a higher pitch, but still a whine.

If your squeal sounds like normal brake squeal, then your brakes may need to be cleaned. Forcing the Prius to do mechanical braking will clean off rust and dirt. Find an empty stretch of road, go up to 40 mph or so, shift into N and brake to slow down. Repeat a few times and your brakes will be shiny and clean.

Tom

[eglmainz]

The sound that I hear sounds like a low (meaning not very loud) metallic (tin-like?) noise, I mainly hear when only using regen brakes. If I really stop, or 'glide' without any regen, I do not hear anything. Even when I do hear it, it is usually only with the windows open.


From all I have seen read, and heard, this is normal for a Prius.

[georgew]

any updates?

[hansgrason1]

Originally Posted by sleewa

I hear the same type of sound - only when starting up cold, as when driving it the first thing in the morning - although to me it does sound rhythmic - sounds as if a piece of sheet metal is rubbing once per revolution...

Same thing here. Squeaking started hppening about 2 weeks after purchase. Took it back to dealer and, of course, the noise didn't occur--so the mechanic found nothing, even after looking at the brakes. For me the squeaking seems to happen when it's very humid outside -- not always in the morning like others have mentioned.