Squeaking Brakes
Thread Starter
Senior Member
Joined: Mar 2021
Posts: 452
Likes: 151
2024 GLE, 2022 GLC , 2022 GLC
Squeaking Brakes
I have a 2022 GLC 4 Matic. I recently used the car in Florida for about 2 months, I live in NYC. When driving home from Florida, we spent a night in Virginia, the first cold night in a couple of months. When backing out of the hotel parking space the brakes made an extremely loud high pitched noise. It has done so every morning since, generally when backing out of my garage. The squealing continues until I have used the brakes a few times and then the noise stops.
I previously owned a 2018 GLC and seem to recall the same problem. I would have thought that MB had ample time to rectify this issue. With my 2018 the dealer replaced my brakes stating in his write up he heard the noise upon test driving, which in fact he was just trying to fix my problem and have MB pay for the brakes. The first dealer I had gone to refused to do anything because he said he had to hear the brakes squealing.
My question, is any other owners of the GLC ( 2022 ) experiencing the same issue, and what was done to rectify it? I realize the squealing goes away, however, this is totally unacceptable for any car especially a luxury brand. Thanks
I previously owned a 2018 GLC and seem to recall the same problem. I would have thought that MB had ample time to rectify this issue. With my 2018 the dealer replaced my brakes stating in his write up he heard the noise upon test driving, which in fact he was just trying to fix my problem and have MB pay for the brakes. The first dealer I had gone to refused to do anything because he said he had to hear the brakes squealing.
My question, is any other owners of the GLC ( 2022 ) experiencing the same issue, and what was done to rectify it? I realize the squealing goes away, however, this is totally unacceptable for any car especially a luxury brand. Thanks
Member
Joined: Oct 2022
Posts: 79
Likes: 27
2022 GLC 300 RWD
sticking piston in caliper
If the sound comes from only one wheel it could be a sticking piston in that caliper.
Since you only noticed it since staying in Florida for a while it could be you need to have the caliper slides cleaned.
Lubrication on the slides of the brake calipers may have picked up sand and it causes the pads to not clear from the rotors.
Still my bet would be that the brake pad wear sensor is making the noise to let you know you need new brake pads
Since you only noticed it since staying in Florida for a while it could be you need to have the caliper slides cleaned.
Lubrication on the slides of the brake calipers may have picked up sand and it causes the pads to not clear from the rotors.
Still my bet would be that the brake pad wear sensor is making the noise to let you know you need new brake pads
Member
Joined: Aug 2012
Posts: 210
Likes: 37
2025 GLE450
This has plagued the GLC since the first model in 2016 (I had one). I now have a 2021 GLC. The brakes will squeal with the first application when backing out on a cold morning, but not nearly as loud or for as long as my 2016 did. The dealer tried twice for remedy this on my 2016, but to no avail, so I guess it's just one of those things to live with. It does go away very quickly,
Thread Starter
Senior Member
Joined: Mar 2021
Posts: 452
Likes: 151
2024 GLE, 2022 GLC , 2022 GLC
Squealing Brakes
This has plagued the GLC since the first model in 2016 (I had one). I now have a 2021 GLC. The brakes will squeal with the first application when backing out on a cold morning, but not nearly as loud or for as long as my 2016 did. The dealer tried twice for remedy this on my 2016, but to no avail, so I guess it's just one of those things to live with. It does go away very quickly,
MBWorld God!
Joined: Dec 2019
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I have a 2022 GLC 4 Matic. I recently used the car in Florida for about 2 months, I live in NYC. When driving home from Florida, we spent a night in Virginia, the first cold night in a couple of months. When backing out of the hotel parking space the brakes made an extremely loud high pitched noise. It has done so every morning since, generally when backing out of my garage. The squealing continues until I have used the brakes a few times and then the noise stops.
I previously owned a 2018 GLC and seem to recall the same problem. I would have thought that MB had ample time to rectify this issue. With my 2018 the dealer replaced my brakes stating in his write up he heard the noise upon test driving, which in fact he was just trying to fix my problem and have MB pay for the brakes. The first dealer I had gone to refused to do anything because he said he had to hear the brakes squealing.
My question, is any other owners of the GLC ( 2022 ) experiencing the same issue, and what was done to rectify it? I realize the squealing goes away, however, this is totally unacceptable for any car especially a luxury brand. Thanks
I previously owned a 2018 GLC and seem to recall the same problem. I would have thought that MB had ample time to rectify this issue. With my 2018 the dealer replaced my brakes stating in his write up he heard the noise upon test driving, which in fact he was just trying to fix my problem and have MB pay for the brakes. The first dealer I had gone to refused to do anything because he said he had to hear the brakes squealing.
My question, is any other owners of the GLC ( 2022 ) experiencing the same issue, and what was done to rectify it? I realize the squealing goes away, however, this is totally unacceptable for any car especially a luxury brand. Thanks
Usually for regular MB models and not performance oriented ones properly bedding-in the brakes will help. The bedding-in procedure is readily available online if you wish to try and see if it helps or you could refer to this video as well that was shared by another forum member here: youtube.com/watch?v=pdPX6rzuINc
Perhaps when MB helped you replace the brakes in your older GLC 300, it was bedded-in properly hence why the issue was mitigated or solved.
Unrelated but for your information: X254 GLC 300 amg line will still have the standard brakes as the non amg line, the braking will be assisted by the 48V mild hybrid system, the X254 GLC 43 will have different brakes, not yet confirmed but likely the same as the ones you have on your X253 GLC 300 amg line and the same ones as the X253 GLC 43
MBWorld Fanatic!
Joined: Oct 2009
Posts: 7,073
Likes: 2,221
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
I agree that high performance brakes need to be used more aggressively, at least every once in a while, or they will develop a glaze that causes squeaking.
It also happens to regular brakes, if one rides the brakes or never brakes hard.
Bedding in usually fixes the problem, until the next glaze takes hold.
It also happens to regular brakes, if one rides the brakes or never brakes hard.
Bedding in usually fixes the problem, until the next glaze takes hold.
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Newbie
Joined: Jan 2024
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GLC300
I have a 2022 GLC 4 Matic. I recently used the car in Florida for about 2 months, I live in NYC. When driving home from Florida, we spent a night in Virginia, the first cold night in a couple of months. When backing out of the hotel parking space the brakes made an extremely loud high pitched noise. It has done so every morning since, generally when backing out of my garage. The squealing continues until I have used the brakes a few times and then the noise stops.
I previously owned a 2018 GLC and seem to recall the same problem. I would have thought that MB had ample time to rectify this issue. With my 2018 the dealer replaced my brakes stating in his write up he heard the noise upon test driving, which in fact he was just trying to fix my problem and have MB pay for the brakes. The first dealer I had gone to refused to do anything because he said he had to hear the brakes squealing.
My question, is any other owners of the GLC ( 2022 ) experiencing the same issue, and what was done to rectify it? I realize the squealing goes away, however, this is totally unacceptable for any car especially a luxury brand. Thanks
I previously owned a 2018 GLC and seem to recall the same problem. I would have thought that MB had ample time to rectify this issue. With my 2018 the dealer replaced my brakes stating in his write up he heard the noise upon test driving, which in fact he was just trying to fix my problem and have MB pay for the brakes. The first dealer I had gone to refused to do anything because he said he had to hear the brakes squealing.
My question, is any other owners of the GLC ( 2022 ) experiencing the same issue, and what was done to rectify it? I realize the squealing goes away, however, this is totally unacceptable for any car especially a luxury brand. Thanks
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Joined: Jan 2024
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2022 GLC 300 4Matic
Squeaking brakes
I live in Virginia and this same problem started about a month ago when the mornings turned cold. It happens pretty much every morning now.
I have a 2022 GLC 4 Matic. I recently used the car in Florida for about 2 months, I live in NYC. When driving home from Florida, we spent a night in Virginia, the first cold night in a couple of months. When backing out of the hotel parking space the brakes made an extremely loud high pitched noise. It has done so every morning since, generally when backing out of my garage. The squealing continues until I have used the brakes a few times and then the noise stops.
I previously owned a 2018 GLC and seem to recall the same problem. I would have thought that MB had ample time to rectify this issue. With my 2018 the dealer replaced my brakes stating in his write up he heard the noise upon test driving, which in fact he was just trying to fix my problem and have MB pay for the brakes. The first dealer I had gone to refused to do anything because he said he had to hear the brakes squealing.
My question, is any other owners of the GLC ( 2022 ) experiencing the same issue, and what was done to rectify it? I realize the squealing goes away, however, this is totally unacceptable for any car especially a luxury brand. Thanks
I previously owned a 2018 GLC and seem to recall the same problem. I would have thought that MB had ample time to rectify this issue. With my 2018 the dealer replaced my brakes stating in his write up he heard the noise upon test driving, which in fact he was just trying to fix my problem and have MB pay for the brakes. The first dealer I had gone to refused to do anything because he said he had to hear the brakes squealing.
My question, is any other owners of the GLC ( 2022 ) experiencing the same issue, and what was done to rectify it? I realize the squealing goes away, however, this is totally unacceptable for any car especially a luxury brand. Thanks
Junior Member
Joined: Apr 2016
Posts: 36
Likes: 2
2021 GLC 300 4Matic
I literally just came back from an MB dealer regarding the same problem (2021 GLC 300 4M). Technician couldn't reproduce the problem. Therefore, as far as the technician was concerned, there was no problem.
This is not the first time this squealing problem has occurred. In fairness, brake rotors and pads were replaced in previous trip to the dealer to resolve this issue. It didn't.
In the work order, it was stated that my car had a low mileage which was being blamed for the squealing. It was suggested that the vehicle should be driven more! How ridiculous could this be?
With all these similar if not exactly the same problems, MB should have come up with a resolution. I still have a little bit of patience.
This is not the first time this squealing problem has occurred. In fairness, brake rotors and pads were replaced in previous trip to the dealer to resolve this issue. It didn't.
In the work order, it was stated that my car had a low mileage which was being blamed for the squealing. It was suggested that the vehicle should be driven more! How ridiculous could this be?
With all these similar if not exactly the same problems, MB should have come up with a resolution. I still have a little bit of patience.
MBWorld Fanatic!
Joined: Oct 2009
Posts: 7,073
Likes: 2,221
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
I literally just came back from an MB dealer regarding the same problem (2021 GLC 300 4M). Technician couldn't reproduce the problem. Therefore, as far as the technician was concerned, there was no problem.
This is not the first time this squealing problem has occurred. In fairness, brake rotors and pads were replaced in previous trip to the dealer to resolve this issue. It didn't.
In the work order, it was stated that my car had a low mileage which was being blamed for the squealing. It was suggested that the vehicle should be driven more! How ridiculous could this be?
With all these similar if not exactly the same problems, MB should have come up with a resolution. I still have a little bit of patience.
This is not the first time this squealing problem has occurred. In fairness, brake rotors and pads were replaced in previous trip to the dealer to resolve this issue. It didn't.
In the work order, it was stated that my car had a low mileage which was being blamed for the squealing. It was suggested that the vehicle should be driven more! How ridiculous could this be?
With all these similar if not exactly the same problems, MB should have come up with a resolution. I still have a little bit of patience.
This is true of every car brand that I've been associated with. Light use, or riding the brakes will develop a glaze which results in squealing.
Replacing the pads, which didn't fix the problem, is a pretty good indication that it's your driving habits.
Maybe if you look for a super-soft organic replacement pad, you'll find one that matches your style.
Or get out every once in a while and do a series of hard stops.
