After car inspection brakes squeal
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Joined: Sep 2020
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From: Edmonton Alberta Canada
2012 C63 AMG Sedan
After car inspection brakes squeal
Anyone have an idea why the brakes on my C63 would start squealing as I come to a slow stop after I got my car back from an out of province inspection shop? They did take the brakes apart and inspect for wear etc so maybe they put them back together with some grease on rotors or maybe set up pads too tight?
Anyone else have this problem and know a fix for it? The shop says that they didn't do anything to cause it and won't do anything for me which is really irrating and poor service.
Thanks for any suggestions you can give.
Anyone else have this problem and know a fix for it? The shop says that they didn't do anything to cause it and won't do anything for me which is really irrating and poor service.
Thanks for any suggestions you can give.
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From: Houston - Clear Lake
C63 coupe, Z3M Roadster garage queen
Take this with a large grain of salt - I'm stateside so have no idea what the inspection process is like in Alberta.
I can't think of any reason for a shop to take the brakes apart to inspect them. Pulling the wheels to be able to look at pads and rotors makes sense, but nothing more. Are you sure you really understand what they did?
I can't think of any reason for a shop to take the brakes apart to inspect them. Pulling the wheels to be able to look at pads and rotors makes sense, but nothing more. Are you sure you really understand what they did?
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From: Edmonton Alberta Canada
2012 C63 AMG Sedan
I actually saw the mechanic take the brake calipers off the discs and put them back together. The inspection process is crazy here in Alberta, - takes 2 hours.
I'm checking to see if there is any treatment to apply to the discs or pads to stop the squealing.
I'm checking to see if there is any treatment to apply to the discs or pads to stop the squealing.
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12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
You could try sanding the pad surfaces with some light grade sandpaper or emery paper
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FYI - the bolts that hold the calipers to the car are single use according to Mercedes WIS (both front and rear), so if they removed the calipers, they need to replace the bolts when re-attaching to the car or they are potentially creating a safety issue.
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2010 C63 AMG
Where did you go for the inspection because you dont need to take the calipers apart to check the required parts for the inspection. You don’t even need to take the wheels off for most cars although it can make it a bit easier
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From: Edmonton Alberta Canada
2012 C63 AMG Sedan
OMG, I'm going to pass this on to the shop because they are a big chain automotive store, - Canadian Tire, - and they are supposed to be certified in safety inspections and if that is true they might have caused a safety issue with the bolts on brakes. They are not a MB dealer so maybe didn't know that but still should be checking when they have to do an inspection on a high end car like MB C63.
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MBWorld Fanatic!
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12 C63BS Magno Alanite Grey, 25 X5 Msport, 08 BMW E93, Ducati Hyper 698
OMG, I'm going to pass this on to the shop because they are a big chain automotive store, - Canadian Tire, - and they are supposed to be certified in safety inspections and if that is true they might have caused a safety issue with the bolts on brakes. They are not a MB dealer so maybe didn't know that but still should be checking when they have to do an inspection on a high end car like MB C63.
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Thread Starter
Junior Member
Joined: Sep 2020
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From: Edmonton Alberta Canada
2012 C63 AMG Sedan
Didn't want to take the car to Crappy Tire but they were the only certified shop for out of province inspections that could take my car to do inspection before I got it home for registration. Anyway I won't be going there ever again.
Probably have a local Edmonton performance shop, - Eurasia Automotive, do any other work on the car.
I'm going to take the wheels off the car in my garage this weekend and try to deglaze the rotors to see if that helps with the squealing at slow braking point just before stopping. Never squeals any other time so maybe the shop got some grease on the rotors or pads when they took them apart.
Probably have a local Edmonton performance shop, - Eurasia Automotive, do any other work on the car.
I'm going to take the wheels off the car in my garage this weekend and try to deglaze the rotors to see if that helps with the squealing at slow braking point just before stopping. Never squeals any other time so maybe the shop got some grease on the rotors or pads when they took them apart.
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12 C63BS Magno Alanite Grey, 25 X5 Msport, 08 BMW E93, Ducati Hyper 698
I guess no one ever answered the squeal question - my guess would be that typically the squeal will com from the little lip that you get as the rotors wear and the pad catching it a bit, my guess is by taking it apart, there is just a tiny bit of play in the bolt hole when you bolt them back on and that would be enough to move the pads just slightly closer to the outside lip on the rotor and cause a squeak. My guess is it may go away after a bit as the pad wears a little.
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Try doing a bedding procedure on the brakes and that may work. Also some have reported a hard brake from a high speed may also remove the squeal, at least for a while. Just don't bring the car to a full stop and drive without applying the brakes for a while to allow the discs to cool down.
