Suspension squeak
Thread Starter
Junior Member
Joined: Aug 2013
Posts: 29
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From: Austin, Texas
2003 C320
Suspension squeak
Trying to track down a squeak in my rear suspension. I replaced struts and a wheel bearing... but still when going over speedbumps, dips or turning with any speed - especially in colder weather - i hear only what i can describe as a rubber squeaking noise.. kinda like what you'd hear if you rubbed two balloons together only a little high pitched.
I'm thinking sway bar links, or perhaps the sway bar itself.
Any ideas?
I'm thinking sway bar links, or perhaps the sway bar itself.
Any ideas?
Thread Starter
Junior Member
Joined: Aug 2013
Posts: 29
Likes: 0
From: Austin, Texas
2003 C320
actually it sounds more like it's coming from the rear left. For instance, if i go over a speed bump and the right side only is compressed - no sound. Seems to be left side only.
I crawled under there last night and the sway bar has some rust on it - but i'd say it's still structurally intact, the links and their bushing look ok. But that doesn't mean they arent old.
I crawled under there last night and the sway bar has some rust on it - but i'd say it's still structurally intact, the links and their bushing look ok. But that doesn't mean they arent old.
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From: Seattle
w203 m112
I have a whole thread about this, but Im pretty sure its your rear sway bar bushings. This noise plagued me forever. Try removing your rear sway bar bushings + sway bar, then going for a drive around the block. If the noise goes away, you know its one of those two. Good luck.
Thread Starter
Junior Member
Joined: Aug 2013
Posts: 29
Likes: 0
From: Austin, Texas
2003 C320
I have a whole thread about this, but Im pretty sure its your rear sway bar bushings. This noise plagued me forever. Try removing your rear sway bar bushings + sway bar, then going for a drive around the block. If the noise goes away, you know its one of those two. Good luck.
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Joined: Feb 2014
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From: CANADA
2012 E550 4Matic
I got similar squeak in my rear suspension. However it has gone when the weather gets warm. I got that issue if weather temp is around -15-20 for couple of days. But no issue on warm days!
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Joined: Aug 2013
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From: Toronto, ON
2012 C300 Sport 4MATIC (current) 2006 C280 Elegance 4MATIC (sold)
OMG!! I've been chasing an intermittent squeak for the past 2 months. It comes and goes so I'm assuming it has to be some sort of bushing. It seems to be coming from the right rear part of the suspension and happens when I go over speed bumps and humps and dips on the road. Squeaky suspensions seem to be commonplace for MB cars because of the liberal use of rubber and poly bushings.
I'm going to have a mechanic check it out when I take the car in for a PS fluid change later this week. Don't want to do the work myself because of how dirty the car is because of the damn weather.
I'm going to have a mechanic check it out when I take the car in for a PS fluid change later this week. Don't want to do the work myself because of how dirty the car is because of the damn weather.
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Senior Member
Joined: Aug 2013
Posts: 283
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From: Toronto, ON
2012 C300 Sport 4MATIC (current) 2006 C280 Elegance 4MATIC (sold)
As for the squeak he diagnosed it as control arm bushings gone bad and they're replaced in pairs. $20 per bushing and about a 90 minute job. I'll go back in about 2 weeks to have the work done on the bushings.
I'll order my parts online from Pelican. I buy my filters from Part Source since they have the Mann brand. I get my oil from NV Euro Motorworks.
Last edited by Khan28; Feb 20, 2014 at 02:44 PM. Reason: forgot a sentence
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ATXJosh, are you still looking for assistance? Let me know and I'll provide product info for you.
In the meantime, we've put together a great Rear Sway Bar Tech Article for your review if you'd like to see how to replace the bushings.
Mark/Pelican Parts
In the meantime, we've put together a great Rear Sway Bar Tech Article for your review if you'd like to see how to replace the bushings.
Mark/Pelican Parts
