Brake pedal squeaking noise
#1
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Thread Starter
Brake pedal squeaking noise
Dealer replaced brake booster, but still making the rubber squeezing noise when press and release brake pedal. Not from the brake, from the brake pedal travel. Maybe simply somewhere need lubcation... any tips?
#3
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Replacing brake booster didn't get rid of the noise at all. Still there when I pick it up right after they replaced brake booster. Then they say it's "normal". I don't want to wate time going back and forth with them. Something they cannot fix or don't care to track down they will claim it's normal. Just like my driver seat also made squeak noise when going over bumps. Mentioned to them while doing some other works, three times, no fix, then was told normal... I finally took a close look myself, found a bolt underneath slightly loose, 5 seconds to tight it up noise gone...
Anyways, I guess probably somewhere need lubrication so just reaching out to see if anyone has any tips where to look at.
Anyways, I guess probably somewhere need lubrication so just reaching out to see if anyone has any tips where to look at.
#5
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#6
Some say dirty calipers can cause a brake pedal squeak. Not sure how that would be a cause, but found it on a google search of 'brake pedal squeak'. Good luck, I hate squeaks and rattles.
#7
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Very annoying... I tried to lubricate everthing around, cannot think of anything else. Only started after last service, which they did brake service. First complaint, dealer said they replaced brake booster, but noise still there, now they say it's normal... but no way that's normal.
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#8
MBWorld Fanatic!
What Year/Mileage GLS ?
If it under MB New Car Warranty - call MB Customer Care with a copy of that most recent service invoice.
PLEASE PLEASE don't spray 1970's lubricants in your MB... WD40/PB-Blaster/etc this isn't a rusty bolt on a '70's Muscle Car...
If it under MB New Car Warranty - call MB Customer Care with a copy of that most recent service invoice.
PLEASE PLEASE don't spray 1970's lubricants in your MB... WD40/PB-Blaster/etc this isn't a rusty bolt on a '70's Muscle Car...
#9
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Thread Starter
2019, still under warranty, they replaced brake booster once, now saying it's normal. I've sent the video to my SA, let's see if they will get back to me with anything new.
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wyatt88 (05-25-2021)
#13
so you by any chance have a printout of what mercedes did so i can show it to the mercedes dealership as they havent even attempted to replace the booster yet
#14
MBWorld Fanatic!
I have what I suspect is the same problem, but your sound file is not publicly available.
Last edited by John CC; 03-18-2022 at 05:01 PM.
#15
https://www.dropbox.com/s/6g4p0a4j2n..._3881.MOV?dl=0
https://www.dropbox.com/s/i3gvo4v5e7...%2054.mov?dl=0
https://www.dropbox.com/s/9a90levwml...%2021.mov?dl=0
#16
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#17
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I will post the paper when I find it. It was the brake master cylinder not brake booster. They replaced both (brake booster first but still making that noise). Replacing brake master cylinder fixed it.
#18
thanks again
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wyatt88 (06-28-2022)
#20
#22
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