Mercedes 320 cls

Paul martin

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Mercedes 320 cls.cdi.2009
Got a problem with a intermittent clunk from rear passenger side.had the exhaust checked its not that.also checked for things rattling in boot.had suspension checked yesterday and there is no problem there any 1 got any ideas it's driving me nuts.
 
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Paul martin

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Mercedes 320 cls.cdi.2009
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Any help appreciated.
 

LostKiwi

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'93 500SL-32, '01 W210 Estate E240 (RIP), 02 R230 SL500, 04 Smart Roadster Coupe, 11 R350CDi
Hard to help when we can't hear the noise.
Also a bit more detail would be useful
Does it happen when accelerating, braking, cornering, on bumps, etc etc...
However... A check of the rear subframe, mounts, shocks and suspension arms probably wouldn't go amiss.
If it's a rattling noise on rough surfaces check antiroll bar mounts and links.
 
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Paul martin

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It's intermittent happening when cornering .or if u hit a uneven rd .I was convinced it was the exhaust catching but kwik fit recon exhaust s fine
 
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Paul martin

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The only checked the exhaust wasn't catching.
 

KennyN

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BMW 440i, Cayenne, ZX12r / ZRX11 / ZRX Monoshock
The only checked the exhaust wasn't catching.

On my CLS350 both my intermediate exhaust brackets broke off thanks to rust (even with <30k miles) , maybe worth while getting under the rear of the car for a proper look.

Get an assistant to wiggle the tailpipes whilst you have a look and listen under the car, you can see them on this eBay listing , one has even conveniently rusted off :


K
 

mioba

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W124/E200, W220/S320CDI, W205/C200, W251/R350CDI 4Matic
but kwik fit recon exhaust s fine

Answers a lot right there, did they check the car over.

Is there a better garage near you.

Suspennsion/mount faults/tracking noises can be hard to pinpoint and some garages just say its fine as they dont want the job - too much searching for little return.
 

EmilysDad

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ML350
On my CLS350 both my intermediate exhaust brackets broke off thanks to rust .....
That was the case with a Merc a lad at work owned, the exhaust was stainless but the hangers were mild steel :confused:
 

Manc Rick

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W213 E220 Premium +, 2017 with OM654.
As above, often times these noises can be hard to pinpoint. I recently had a similar noise and all suspension components looked as good as new. The problem turned out to be defective shock absorbers - internal. So all appeared ok on visual inspection and the only reason this was diagnosed was because the tech had experienced the problem before. New shocks and problem solved.

Kwikfit, or any other non specialist would have found this extremely difficult to diagnose.
 
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Paul martin

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Mercedes 320 cls.cdi.2009
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Sorted had a suspension checked other week told it was fine.been another garage today its a broken rear spring.
 
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Paul martin

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As above, often times these noises can be hard to pinpoint. I recently had a similar noise and all suspension components looked as good as new. The problem turned out to be defective shock absorbers - internal. So all appeared ok on visual inspection and the only reason this was diagnosed was because the tech had experienced the problem before. New shocks and problem solved.

Kwikfit, or any other non specialist would have found this extremely difficult to diagnose.
Sorted broken rear spring. Halfords said suspension was fine.say it all really.
 

Rotorhead500

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Used to have a C63...
Was about to suggest checking springs, as they have a habit of becoming a bit saggy on the 219s... then breaking.

Good that it's sorted.
 


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