GMBALL

Hi guys,

as some of you know (from my other thread), I have been experiencing strange clunking noises from my rear shock absorbers while driving on irregular road surface. My MB technician told me that the problem are rear shock absorbers and their condition is said to be "bad". I have no idea what that means as they function normally, it is just the noise they make. They said that I should replace them to eliminate the noise, but warranty claim was denied. I have recently driven another S63 Coupe with less mileage (mine 39k kilometers vs 23k kilometers) and that car also had same noises, although not as loud. I, still, cannot imagine this is normal and need more evidence.

I have recorded a video for you guys to listen. Those of you, who have the S63/65 Coupe, can you confirm that you also experience similair nosies while driving over small bumps? Please, use headphones to hear it. As you can hear, the front suspension absorbs just fine, the rear is making clunking noise. Thanks!

TECHNICIAN

Can't isolate the rear noise from the other noises in the video unfortunately. Hard to say

okbarnett

to me it sounds like something in the car, or the trunk

GMBALL

And that’s the noise. Only problem is - it is nothing in the trunk, but comes from the rear suspension.

OEVO1

Hi everyone,

I have the same problem with my 2016 S63 which is only 8000km away.
The dealer must replace them under warranty next week.

GMBALL

So your dealer agreed to replace them under warranty? What country are you located in?

OEVO1

Yes under warranty, I'm in France

2014CL600

Your video is not really very helpful. The sound isn’t coming through enough to distinguish what it could be. From what I’m told, it is just in the design of the suspension. My S Edition one clunks and my S 63 clunks. I though it could be a particular rear strut, possibly the passenger rear but it’s both cars doing the same damn thing. One car has no miles and the other 14k miles. It’s just something I’ve had to live with. It drives me crazy, so I turn up the sound on the stereo. My CLS550 clunked so bad on the fronts with only 49k miles, I couldn’t drown it out. My warranty company wouldn’t fix them but after I decided to pay for the repairs myself, they found oil on top of the struts after taken out, they found the oil seals had ruptured on the tops of each strut and the warranty company paid for the repairs. They kept telling me there was nothing wrong but it was beyond tolerable. It was only 1,500.00 for the Mercedes struts and install, so luckily they weren’t to upset about paying out. The S Coupes drive me nuts as well. My CL550 and my CL600 are hush quiet. If you replace the rear struts, please keep me posted as to if it corrects your issue. If it does, I’ll replace mine. I honestly don’t think it’s the struts because mileage doesn’t seem to have any affect on the noise.

Normg

Just last week I had my 2016 S63 (18K miles) at the dealer for 5 year service (incl plugs) and a "clunk" noise coming from the passenger side rear going over small bumps. The passenger side rear strut was replaced under CPO warranty. No more noise! The dealer did not provide specific information on the failure, just that it needed replaced.

All good now!!

Norm