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sorry for the confusion, I meant I have the same noise as Ryan Li who posted his video right above my post. My car also doesn’t make the noise when engine is cold, only when fully warmed up.
I’ll make a video later today.
I see thanks for your reply, will wait for your video and then hopefully me and other forum members can help figure out what it is.
sorry for the confusion, I meant I have the same noise as Ryan Li who posted his video right above my post. My car also doesn’t make the noise when engine is cold, only when fully warmed up.
I’ll make a video later today.
Just following up with you in case you still haven't fixed the problem, if so maybe forum members may be able to try to find the cause?
wow! thank you for this. Ive had this happening with my 2022 E53 coupe. It's so frustrating because it is intermittent and the tech wants me to replicate in front of him
Last October, my wife and I picked up a CPO’d 2021 E53 Cabriolet with only 21K miles. We put about 800 miles on it so far, and most of it was for winter storage.
When we drove it back from storage, we brought it into our local MB dealership in order to complete the latest emissions recall. Unfortunately, as we scheduled the appointment, the check engine light illuminated for an oil sensor fault. Getting this fixed was a hassle in itself, as the light kept illuminating even after the software update.
After picking up our car from the dealer today for a “hopefully resolved” check engine light issue, this exact chirping noise started occurring.
This is our first experience with the MB brand and my wife and I are furious. At this point, we are having a very large case buyer’s remorse. We’ve been long time Audi drivers and have never experienced level of incompetence from a dealership’s service department or issues with a CPO.
Before I call another service dealer to schedule a new appointment for this “chirping” issue, has MB or anyone been able to find a resolution to this???
Last October, my wife and I picked up a CPO’d 2021 E53 Cabriolet with only 21K miles. We put about 800 miles on it so far, and most of it was for winter storage.
When we drove it back from storage, we brought it into our local MB dealership in order to complete the latest emissions recall. Unfortunately, as we scheduled the appointment, the check engine light illuminated for an oil sensor fault. Getting this fixed was a hassle in itself, as the light kept illuminating even after the software update.
After picking up our car from the dealer today for a “hopefully resolved” check engine light issue, this exact chirping noise started occurring.
This is our first experience with the MB brand and my wife and I are furious. At this point, we are having a very large case buyer’s remorse. We’ve been long time Audi drivers and have never experienced level of incompetence from a dealership’s service department or issues with a CPO.
Before I call another service dealer to schedule a new appointment for this “chirping” issue, has MB or anyone been able to find a resolution to this???
To sum up the thread, OP replaced brake pads and even installed custom made brake pads didn't resolve the issue, the solution might be fixing the caliper mount, have your dealership check all of them. Good luck getting this sorted, noise issues are the absolute worse to deal with, been there done that especially that they are intermittent and/or heat sensitive making it hard to diagnose.
Thanks again to W205C43PFL for pointing me to this thread. Exact same issue that I'm having.
Taking mine into dealer and will provide them with a link to this thread (pointing them to brake caliper). Can anyone confirm that the brake caliper replacement resolved this issue?
Thanks again to W205C43PFL for pointing me to this thread. Exact same issue that I'm having.
Taking mine into dealer and will provide them with a link to this thread (pointing them to brake caliper). Can anyone confirm that the brake caliper replacement resolved this issue?
brake caliper replacement did not fix my issue. Traded the car in
Thanks again to W205C43PFL for pointing me to this thread. Exact same issue that I'm having.
Taking mine into dealer and will provide them with a link to this thread (pointing them to brake caliper). Can anyone confirm that the brake caliper replacement resolved this issue?
Hello All. The chirping was resolved on mine with the brake caliper replacement and has been ok since.
I empathize with all of you on the annoying sounds that grate on your soul like fingernails scraping the chalkboard. MB should take note and do better.
Hello All. The chirping was resolved on mine with the brake caliper replacement and has been ok since.
I empathize with all of you on the annoying sounds that grate on your soul like fingernails scraping the chalkboard. MB should take note and do better.
That is good news! Forum member @MB2324 Let your dealership know
Hi, I have exactly the same problem since I got my car in November 2023. It's driving me nuts....
I had to replace front brake disc and pads as well as the front wheel bearings 1 month ago. The squeaking sounds are still present (but now I think at the rear axle of the car). It is exactly the same sound as in your movies. The hard noises only occur when driving after half an hour - an hour. In about several weeks my Mercedes dealer is going to replace also the brake discs and pads on the rear axle. The car has only 15.000 km. on the odometer and I have the terrible sounds since I got the car in November 2023 (when it had 9.000 km on the odometer).
@ E53midS: you don't have the problems with the strange sounds anymore since they replaced the brake calipers? And how long ago the changed the brake calipers?
Hi, I have exactly the same problem since I got my car in November 2023. It's driving me nuts....
I had to replace front brake disc and pads as well as the front wheel bearings 1 month ago. The squeaking sounds are still present (but now I think at the rear axle of the car). It is exactly the same sound as in your movies. The hard noises only occur when driving after half an hour - an hour. In about several weeks my Mercedes dealer is going to replace also the brake discs and pads on the rear axle. The car has only 15.000 km. on the odometer and I have the terrible sounds since I got the car in November 2023 (when it had 9.000 km on the odometer).
@ E53midS: you don't have the problems with the strange sounds anymore since they replaced the brake calipers? And how long ago the changed the brake calipers?
Hope to hear from you...
The parakeet chirping sounds have not returned since the replacement of the brake carriers. I empathize with you because it took over a year to resolve this mysterious sound!
The parakeet chirping sounds have not returned since the replacement of the brake carriers. I empathize with you because it took over a year to resolve this mysterious sound!
Now that is music to my ears this morning, glad to hear!
The parakeet chirping sounds have not returned since the replacement of the brake carriers. I empathize with you because it took over a year to resolve this mysterious sound!
would it be possible for you to post the actual part numbers for this? i have a similar issue (new to me CPO) and dealer is arguing with me if it's covered or not. if the part is cheap i'll just replace them myself
would it be possible for you to post the actual part numbers for this? i have a similar issue (new to me CPO) and dealer is arguing with me if it's covered or not. if the part is cheap i'll just replace them myself
that's what i was assuming, basically the "fixed" part of the caliper + hardware. in my experience doing brake work i don't see how the part itself could be bad. it's just a metal housing, nothing can squeak on the part itself unless maybe it wears the hole out or something but these parts are usually quite sturdy. i would think if i just replaced the rubber gasket/boot (part #60) and lubed it up good that would achieve the same goal. a bit of work but very inexpensive
that's why i was wanting to see the actual invoice/part number the person had which was successful. the squeaking is driving me nuts
that's what i was assuming, basically the "fixed" part of the caliper + hardware. in my experience doing brake work i don't see how the part itself could be bad. it's just a metal housing, nothing can squeak on the part itself unless maybe it wears the hole out or something but these parts are usually quite sturdy. i would think if i just replaced the rubber gasket/boot (part #60) and lubed it up good that would achieve the same goal. a bit of work but very inexpensive
that's why i was wanting to see the actual invoice/part number the person had which was successful. the squeaking is driving me nuts
Sort of update: Having the same issue as OP and I think one or two others in this post - I figured I would start by trying to replace my front rotors and pads. My front rotors had a very pronounced lip and I was thinking that the pads, even when not in contact with the rotor flat part, would still rub a little bit on the lip (since it sits "in" the lip) and cause it. Sound is still there, though it's definitely better. I lubed the metal/metal parts, and the new pads came with new pins and the shield. I see others who replaced the calipers and it went away, but I don't really see what on the caliper would cause it (by replacing it)
It's absolutely related to the brakes as even 1% brake pressure when it's squeaking silences the noise instantly even when not really "braking." These brakes produce an insane amount of dust and I tried cleaning the main stud which goes through the middle of the caliper but may try yanking it back out and really cleaning it. If there is some dust buildup I could definitely see that causing this noise. And new calipers would replace that stud...so would make sense. Will keep trying...
New rotors and pads look great Caliper and pins (old parts which were replaced, just don't have a photo of it) My strong suspicion is that it's metal rubbing at these points. I lubed them a bit but maybe not enough
Last edited by natesamg; Jun 27, 2025 at 12:56 PM.
natesamg, Ive learned something quite interesting from your post. My 2018 E43 sedan and my 2021 E53 sedan share the same front brake caliper. Your 2020 E53 sedan has a different style front caliper. I wonder why Mercedes made the change with the prefacelift E53 only to change them back to the E43 setup on the facelift E53.
Last edited by 6speeddave; Jun 27, 2025 at 02:32 PM.
natesamg, Ive learned something quite interesting from your post. My 2018 E43 sedan and my 2021 E53 sedan share the same front brake caliper. Your 2020 E53 sedan has a different style front caliper. I wonder why Mercedes made the change with the prefacelift E53 only to change them back to the E43 setup on the facelift E53.
that is interesting. i see the 2021 E53 uses the same rotor and pads as mine, but the caliper is indeed different. i think mine has brembo calipers? on rock auto you can buy replacement calipers for the 2020 E53 but they don't have any listed for a 2018 E43 or a 2021 E53 even though the rotors/pads are the same part
Sort of update: Having the same issue as OP and I think one or two others in this post - I figured I would start by trying to replace my front rotors and pads. My front rotors had a very pronounced lip and I was thinking that the pads, even when not in contact with the rotor flat part, would still rub a little bit on the lip (since it sits "in" the lip) and cause it. Sound is still there, though it's definitely better. I lubed the metal/metal parts, and the new pads came with new pins and the shield. I see others who replaced the calipers and it went away, but I don't really see what on the caliper would cause it (by replacing it)
It's absolutely related to the brakes as even 1% brake pressure when it's squeaking silences the noise instantly even when not really "braking." These brakes produce an insane amount of dust and I tried cleaning the main stud which goes through the middle of the caliper but may try yanking it back out and really cleaning it. If there is some dust buildup I could definitely see that causing this noise. And new calipers would replace that stud...so would make sense. Will keep trying...
New rotors and pads look great Caliper and pins (old parts which were replaced, just don't have a photo of it) My strong suspicion is that it's metal rubbing at these points. I lubed them a bit but maybe not enough
Thanks for the pictures and thanks for the update.
natesamg, Ive learned something quite interesting from your post. My 2018 E43 sedan and my 2021 E53 sedan share the same front brake caliper. Your 2020 E53 sedan has a different style front caliper. I wonder why Mercedes made the change with the prefacelift E53 only to change them back to the E43 setup on the facelift E53.
Originally Posted by natesamg
that is interesting. i see the 2021 E53 uses the sa
me rotor and pads as mine, but the caliper is indeed different. i think mine has brembo calipers? on rock auto you can buy replacement calipers for the 2020 E53 but they don't have any listed for a 2018 E43 or a 2021 E53 even though the rotors/pads are the same part
They do like to share the same part, for example, W205 C 450 has the same brakes as W205 C 43. Other than the caliper having "mercedes-benz" branding. The C 300 (pre-facelift) amg line also have the same brakes as the two. This was confirmed by the forum members here.
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