Clunk sound from rear...
Thread Starter
Junior Member
Joined: Jun 2007
Posts: 45
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From: Pasadena, CA.
'10 Tesla Roadster, '06 AMG CLS 55; '00 SVT F-150
Clunk sound from rear...
Hi Guys, I'm relatively new to this board. Avid reader, lazy poster (thanks for the all the knowledge gained).
I've been hearing an intermitent loud clunking sound, probably coming from the rear suspension, that's most evident over uneven roads or bumps, but not very reproducible.
I took it to my mechanic and he checked everything out, suspension, exhaust, etc. anything that might make a metal on metal type sound.
Yes, I've emptied the car, trunk, no dead bodies, etc. My mechanic thinks something might be wrong with the air suspension, but no way to reproduce it on the rack.
Any similar experiences ? Ideas would be appreciated.
Thanks,
- Ed
I've been hearing an intermitent loud clunking sound, probably coming from the rear suspension, that's most evident over uneven roads or bumps, but not very reproducible.
I took it to my mechanic and he checked everything out, suspension, exhaust, etc. anything that might make a metal on metal type sound.
Yes, I've emptied the car, trunk, no dead bodies, etc. My mechanic thinks something might be wrong with the air suspension, but no way to reproduce it on the rack.
Any similar experiences ? Ideas would be appreciated.
Thanks,
- Ed
MBWorld Fanatic!
Joined: May 2006
Posts: 3,042
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From: So.Ca.
E55
Try this.Drive over a speed bump at slow speed,if it does it and its the same sound then most likely its the rear shocks and suspension.They all do it.
Another thing to try is back up slowly and stop.Put the car in drive and slap the throttle with your foot,as if you were leaving a stop light quickly.If you hear a thud from under the car then,you most likely have a broken rear sub frame mount.Somewhat common.Warranty will fix it.
Another thing to try is back up slowly and stop.Put the car in drive and slap the throttle with your foot,as if you were leaving a stop light quickly.If you hear a thud from under the car then,you most likely have a broken rear sub frame mount.Somewhat common.Warranty will fix it.
Super Member
Joined: Feb 2007
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From: PCH
OO7 CLS63///G55TANK ///S80-T6///R1///R6
had the same prob.
It was a couple of loose brackets located next to the trunk pillar to the left(close to the fuse box_). The way I figuered it out was Having my mech. ride in the trunk while I was driving. It did sound like metal clunking. I was told it was a defect from factory. Give it a try-get to your fuse box and see if everything is where it should be.
It was a couple of loose brackets located next to the trunk pillar to the left(close to the fuse box_). The way I figuered it out was Having my mech. ride in the trunk while I was driving. It did sound like metal clunking. I was told it was a defect from factory. Give it a try-get to your fuse box and see if everything is where it should be.
Super Member
Joined: Mar 2006
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You name it i've had it or got it...
had the same prob.
It was a couple of loose brackets located next to the trunk pillar to the left(close to the fuse box_). The way I figuered it out was Having my mech. ride in the trunk while I was driving. It did sound like metal clunking. I was told it was a defect from factory. Give it a try-get to your fuse box and see if everything is where it should be.
It was a couple of loose brackets located next to the trunk pillar to the left(close to the fuse box_). The way I figuered it out was Having my mech. ride in the trunk while I was driving. It did sound like metal clunking. I was told it was a defect from factory. Give it a try-get to your fuse box and see if everything is where it should be.
Super Member
Joined: Feb 2007
Posts: 657
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From: PCH
OO7 CLS63///G55TANK ///S80-T6///R1///R6
MBWorld Fanatic!
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From: Kuwait
CLS55 2006, CLS 63S 2015
I also get this noise and thought it might have been bushings, will check it out!
thanks J
p.s lol i just thought to my self...where is this rear sub frame mount located
thanks J
p.s lol i just thought to my self...where is this rear sub frame mount located
Last edited by Zod; Dec 2, 2007 at 02:06 AM.
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Thread Starter
Junior Member
Joined: Jun 2007
Posts: 45
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From: Pasadena, CA.
'10 Tesla Roadster, '06 AMG CLS 55; '00 SVT F-150
Thanks for the replies
I got my wife to sit in the back while I took the car out for a spin, couldn't convince her that the trunk was ideal as suggested by SAMSSONZ...
rbtronnie5, I punch it every chance I get, but doubt I drive it harder than you fellas, so doubt it is the diff. The clunks happens mostly over uneven roads that make the car rock a bit, not on quick sprints, or hitting favorite fwy on ramps, etc.
Jrocket, found a couple of speed bumps near a local elementary and can't reproduce it reliably, but when we do hear it, my wife thinks it is coming from the rear passenger side suspension, so your suggestion of a broken rear sub frame mount, is interesting, since we already ruled out bushings.
Samssonz, didn't see anything loose in the trunk, but will try again to look for the brackets near the trunk pillar / fuse box area as suggested.
My wife's friend's brother-in-law apparently is head mechanic for AMGs at Beverly Hills MB, if my dealer (Rusnak) can't figure it out, I guess I'll send it out for a 2nd opinion next week and follow-up with you guys.
Thanks again,
- Ed
rbtronnie5, I punch it every chance I get, but doubt I drive it harder than you fellas, so doubt it is the diff. The clunks happens mostly over uneven roads that make the car rock a bit, not on quick sprints, or hitting favorite fwy on ramps, etc.
Jrocket, found a couple of speed bumps near a local elementary and can't reproduce it reliably, but when we do hear it, my wife thinks it is coming from the rear passenger side suspension, so your suggestion of a broken rear sub frame mount, is interesting, since we already ruled out bushings.
Samssonz, didn't see anything loose in the trunk, but will try again to look for the brackets near the trunk pillar / fuse box area as suggested.
My wife's friend's brother-in-law apparently is head mechanic for AMGs at Beverly Hills MB, if my dealer (Rusnak) can't figure it out, I guess I'll send it out for a 2nd opinion next week and follow-up with you guys.
Thanks again,
- Ed
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MBWorld Fanatic!
Joined: Nov 2006
Posts: 9,137
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From: California, USA
E63 P30, CL500 Sport
had the same prob.
It was a couple of loose brackets located next to the trunk pillar to the left(close to the fuse box_). The way I figuered it out was Having my mech. ride in the trunk while I was driving. It did sound like metal clunking. I was told it was a defect from factory. Give it a try-get to your fuse box and see if everything is where it should be.
It was a couple of loose brackets located next to the trunk pillar to the left(close to the fuse box_). The way I figuered it out was Having my mech. ride in the trunk while I was driving. It did sound like metal clunking. I was told it was a defect from factory. Give it a try-get to your fuse box and see if everything is where it should be.
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Joined: Dec 2006
Posts: 6,499
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
Try this.Drive over a speed bump at slow speed,if it does it and its the same sound then most likely its the rear shocks and suspension.They all do it.
Another thing to try is back up slowly and stop.Put the car in drive and slap the throttle with your foot,as if you were leaving a stop light quickly.If you hear a thud from under the car then,you most likely have a broken rear sub frame mount.Somewhat common.Warranty will fix it.
Another thing to try is back up slowly and stop.Put the car in drive and slap the throttle with your foot,as if you were leaving a stop light quickly.If you hear a thud from under the car then,you most likely have a broken rear sub frame mount.Somewhat common.Warranty will fix it.
I've had two different W211 cars with Airmatic and no sounds from the suspension, I wouldn't consider them all do it. Again, the CLS may be different, I did not check this.
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From: So.Ca.
E55
I'm not sure how similar the CLS Airmatic is (I understood the OP's car had airmatic) with the W211 but my W211 had an odd clunk at quick bumps, not on slow ones. It turned out to the the rear suspension. The car was fixed on warranty and I never knew if the shocks were replaced or the airmatic spring, or both. But this CLS is newer and I understood it was a batch of airmatic parts that had problems. It really sounded like something was loose in the trunk.
I've had two different W211 cars with Airmatic and no sounds from the suspension, I wouldn't consider them all do it. Again, the CLS may be different, I did not check this.
I've had two different W211 cars with Airmatic and no sounds from the suspension, I wouldn't consider them all do it. Again, the CLS may be different, I did not check this.
The e and cls both have the same rear suspension parts.
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E63 P30, CL500 Sport
So what is it exactly? 
My car has that same exact clunk when I go over speed bumps a little fast. If I take it slow, I don't hear the sound, but just a little faster than usual, I get that clunk.
After the mechanics checked the suspension, bushings, brackets, bars, etc..... they said everything looked fine. Then they tested 3 other brand new 63s and they all had that exact same clunk, so they told me that it was normal.
Is it really normal or can it be fixed permanently?
My car has that same exact clunk when I go over speed bumps a little fast. If I take it slow, I don't hear the sound, but just a little faster than usual, I get that clunk. After the mechanics checked the suspension, bushings, brackets, bars, etc..... they said everything looked fine. Then they tested 3 other brand new 63s and they all had that exact same clunk, so they told me that it was normal.
Is it really normal or can it be fixed permanently?
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Joined: Feb 2007
Posts: 657
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From: PCH
OO7 CLS63///G55TANK ///S80-T6///R1///R6
So what is it exactly? My car has that same exact clunk when I go over speed bumps a little fast. If I take it slow, I don't hear the sound, but just a little faster than usual, I get that clunk.
After the mechanics checked the suspension, bushings, brackets, bars, etc..... they said everything looked fine. Then they tested 3 other brand new 63s and they all had that exact same clunk, so they told me that it was normal.
Is it really normal or can it be fixed permanently?
My car has that same exact clunk when I go over speed bumps a little fast. If I take it slow, I don't hear the sound, but just a little faster than usual, I get that clunk. After the mechanics checked the suspension, bushings, brackets, bars, etc..... they said everything looked fine. Then they tested 3 other brand new 63s and they all had that exact same clunk, so they told me that it was normal.
Is it really normal or can it be fixed permanently?
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Joined: Mar 2007
Posts: 281
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From: Dallas, Texas USA
06 CLS55 AMG-all options sans Distronic; Carrera4S; 07 M5;Lexus GS300
Jrocket-
+1. Mine has it also and there's nothing loose in my trunk (only my mind, I think).
what's the solution, if there is one?
+1. Mine has it also and there's nothing loose in my trunk (only my mind, I think).
what's the solution, if there is one?
