SL550 squeaky brake pedal after new pressure reservoir installed
Thread Starter
Newbie
Joined: Apr 2022
Posts: 1
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From: Spring Hill FL
2009 SL550
SL550 squeaky brake pedal after new pressure reservoir installed
I had my pressure reservoir replaced under warranty but now my brake pedal squeaks everytime it is pressed. it has new brakes and it is not break squeal it is the pressure on the pedal causing the sqeak everytime its pushed parked or driving. extremely irritating in traffic but MB dealer said its normal. I don't believe it for a minute. Service tech said he checked another same make and model and same thing. This doesn't mean it's right but looking for help.
Last edited by Jpennett; Apr 9, 2022 at 09:30 AM. Reason: typos
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,632
From: North Scottsdale, AZ
'71 Pinto
230 should be posting here: https://mbworld.org/forums/sl-class-r230-17/
Junior Member
Joined: Sep 2020
Posts: 29
Likes: 14
From: Chicago, IL
'14 CLS550
I have the exact same problem with my W218 except I haven't had anything replaced i.e. brake booster master cylinder pressure reservoir etc. - it squeaks on pedal pressure after driving for a while on some days. The noise is definitely coming from inside the car down in the pedal well area. I had a local shop check it out but they couldn't find anything wrong with it. I think it's probably a brake booster problem but don't want to start replacing things without a more firm diagnosis. Let me know if you find an answer...
