Squeaky suspension
Thread Starter
Junior Member
Joined: May 2007
Posts: 62
Likes: 22
From: SF Bay Area
20 SL450, 23 EQS 580, 13 Ferrari F12, 12 Cayenne S, 22 Turbo S
Squeaky suspension
I have a peculiar problem. Sometimes something in my S550 suspension squeaks. It's pretty loud and squeaks when moving over bumps and transitions, which is all the time. It may do this for a week, then it mysteriously goes away. This has happened three times. Squeaks for a while, then goes back to silent normal operation. Anyone experienced this???
MBWorld Fanatic!
Joined: Nov 2014
Posts: 1,560
Likes: 208
From: Maryland
Depends on the weather
Sounds like bushings. I had this issue on one of my range rovers. It was fine some days and others it would do it all the time over bumps. I used a needle and injected grease in to the rubber surrounding the bushing and like magic, it went away for good.
Senior Member
Joined: Mar 2015
Posts: 390
Likes: 26
From: USA
Mercedes-Benz 2007 S550, 2012 S550 4-Matic, 2014 S550 (Traded), 2015 GL450
My guess is that it could be the the front torque strut or the front lower control arm which connects to the airmatic strut. Put it on a rack grab the wheel and move it to hear where the noise is coming from. Otherwise visually inspect for a damaged ball joint boot. I don't think you can just replace a ball joint. You would have to replace the whole control arm assembly. Mercedes dealership using OE parts would charge about $800-$1000 depending on where you live. Indie would be less.
Member
Joined: Apr 2015
Posts: 169
Likes: 7
From: Monroe, NY 10950
2007 S550 4Matic 2009 ML350 4Matic
I had that problem and it turned out to be the stabilizer bar bushings. Changed them out & the sound went away. Now I have a new problem, when I turn my wheel to the left I hear some kind of whining noise on the left side or steering column area mostly when parking, not driving.
