SL-Class (R231) 2013 on: Discussion on the SL550

SL/R231: My brakes squeak!

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Old 02-19-2014, 02:13 AM
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2004.7 C180 Kompressor, BMW X5, Chevrolet Camaro LT, Mercedes S, Cesna 152.
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Old 02-19-2014, 11:50 PM
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2015 S550 Coupe
Originally Posted by happyinboca
Car was in for another issue and I mentioned the brakes being squeaky - New front pads and rotors replaced by the dealer at no cost - no squeak since ...
Lucky! I tried to get things improved during my last service but my service dept didn't offer to do anything other than let me buy new pads/rotors.
Old 02-21-2014, 07:19 AM
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I am sorry for you all squeak-victims !! I am another one too!!

on perfect discs new pads keep squeaking,
tried ALL ways to fix, dismounted three times!
at he end I realize it is due to the material of the pads.

I can only say: avoid SIMER and XPAD brand pads like hell !!!!!!!

(tags: simer, xpad, brake pads, squeak)
Old 05-03-2014, 06:42 PM
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Reviving an old thread here just to document the prevalence of brake squeal - It is driving me nuts - I need to get this thing in and repaired before the weather gets nice or I'm gonna be pissed.

Those that have had the dealer remedy the issue - is there a TSB # I should reference?
Old 05-05-2014, 03:40 AM
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First: if everything is clean and okay, squealing depends on pads. Personally I solved changing pads and installing EBC Ultimax pads (http://www.ebcbrakeshop.co.uk/)
Then if brakes are single piston models, apply a copper paste lubricant on every part that slides (except disk surface DDD )

Second: apply "anti squeal brake shims" (eg. ebay) on pads. If squealing s dramatic, this tip comes from EBC technical service, install shims only on half of the pad so it covers half of the piston area; (since squealing is a resonance phenomenon, all that dampens pads or changes their geometry will hopefully stop resonance).

I searched a lot regarding restoring resurfacing brake disks, but seems that there is no influence on squealing.
Old 09-04-2014, 09:15 AM
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SL 550 R231
Mine squeak to, just came back from the dealer and he said the bads are fine, not worn.
Great, that helps.
Of course they're not worn, it's a new car.

So no help from the dealer, I guess you can't expect more for $125000.
Old 09-04-2014, 10:46 PM
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I've discussed the issue with the brake buyer in Germany responsible for the BR231 and they noted there hasn't been any discussion with the supplier on updating the compound as the pads currently meet engineering specs related to performance requirements.

I'm sure if enough noise (no pun intended) is made there will be a change later on
Old 05-04-2015, 03:58 AM
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V221 / W211 / R231
My brakes also squeaked. I upgraded them now to AMG brakes for cosmetic reasons, but with the AMG brakes the squeaking is completely gone.


Old 05-05-2015, 09:49 PM
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My AMG brakes squeak like crazy. The dealer said all the AMG brakes squeak. The brakes on my (non AMG)SL550 squeaked too. Not impressed by MB on this one.
Old 05-06-2015, 03:31 AM
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AMG SLS & S coupe
Originally Posted by red308
The dealer said all the AMG brakes squeak.
My 2013 SL550 did not have brakes that squeal. My new 2014 SLS doesn't either.
If you're ambitious, use sandpaper to rough up the pad surface. Me, I'd get new pads installed. It should be covered.

Call MB if you have to.
Old 05-28-2015, 09:55 PM
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2014 SL550
Brake squeal

Happy in Boca. I presume Boca Raton. Which dealer are u using
Bought SL in Virginia in Boca now need to get the brake squeal looked at
Who do u go to
Old 05-29-2015, 04:31 AM
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AMG SLS & S coupe
Originally Posted by Lroten
Bought SL in Virginia in Boca now need to get the brake squeal looked at
Who do u go to
Go to your local dealer. They makes more money on service and repairs than their profit on the sale. They will be more than happy to take your money.
Old 05-29-2015, 06:37 AM
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Originally Posted by Lroten
Happy in Boca. I presume Boca Raton. Which dealer are u using
Bought SL in Virginia in Boca now need to get the brake squeal looked at
Who do u go to
FT Lauderdale MB is where I get the vehicle serviced, they were very accommodating and addressed the issue without hesitation.
Old 05-29-2015, 09:15 PM
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SL550
Pads replaced

My wife's SL550 had that problem. It was quite loud. When I drove it into the portal at the dealership they could hear the brakes squealing.

It took two visits but they replaced the pads. It's a common problem with high performance pads.

I have a brake squeak on my 2014 Viper TA but not bad enough to have it fixed.

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