C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe
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Squeaky noise may be suspension problems?

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Old Oct 5, 2011 | 02:02 PM
  #1  
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02' C230 coupe kompressor
Squeaky noise may be suspension problems?

Hey guys i hear a rattling/squeaky noise in the front of my car. It may be suspension because everytime i drive out of a drive way or go over a speed bump or small dip i hear it from the front cabin. Also i recently changed my wheels all four and noticed my front right tire was badly worn down, thinking i needed a new alignment i thought that would be the problem but the alignment was good so it has to be something else..

sorry i guys i tried looking if a similar problem occured but couldnt find any also i have no clue what im dealing with..if anyone knows what to look for please let me know..TIA
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Old Oct 5, 2011 | 02:46 PM
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2002 Mercedes Benz C230 Coupe
Originally Posted by smanzor88
Hey guys i hear a rattling/squeaky noise in the front of my car. It may be suspension because everytime i drive out of a drive way or go over a speed bump or small dip i hear it from the front cabin. Also i recently changed my wheels all four and noticed my front right tire was badly worn down, thinking i needed a new alignment i thought that would be the problem but the alignment was good so it has to be something else..

sorry i guys i tried looking if a similar problem occured but couldnt find any also i have no clue what im dealing with..if anyone knows what to look for please let me know..TIA
First step is to check for loose parts/bolts.

Check the swaybar and swaybar endlinks for loose joints.

IF theyre all tight, Im afraid its your bushings squeaking. Youll have no narrow down which bushing and replace the entire part.

It could be your upper or lower control arms, outer or inner tie rod ends, or your swaybar or swaybar endlink bushings.
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Old Oct 5, 2011 | 10:03 PM
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2005 c230 kompressor 2003 s500 94 wrangler
turn the wheels almost full lock to the right and left

if u here clunking your ball joints are going to b bad

i wouldnt be worried about it until your car is pulling to a side...theirs a crown in the road so find a level street
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Old Oct 6, 2011 | 08:35 AM
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Check castor bushes & sway bar links first.
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Old Oct 6, 2011 | 09:43 AM
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Originally Posted by Glyn M Ruck
Check castor bushes & sway bar links first.
+1.
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Old Oct 6, 2011 | 03:35 PM
  #6  
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02' C230 coupe kompressor
Originally Posted by sammydragon3
turn the wheels almost full lock to the right and left

if u here clunking your ball joints are going to b bad

i wouldnt be worried about it until your car is pulling to a side...theirs a crown in the road so find a level street
I checked that no sounds noted...

Originally Posted by Glyn M Ruck
Check castor bushes & sway bar links first.
ok awesome,have no clue what to look for here, but ima try to google it..thanks!


also I noticed the sound would exacerbate when its hot outside, like i would drive it in the morning and wouldn't here anything but when i begin to drive it in the afternoon when the weather is hot it gets worse.

A bit of more information i forgot to mention!! when i brought my car into service the rep.told me that something "cracked and slowly started to leak "at the time they said it wasn't severe and i could keep driving it. obviously i don't remember what he was talking about because it been quite a while since I went back to service because I started to DIY oild changes...
thanks guys for all the help!Hopefully I can get this diagnosed soon
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Old Oct 6, 2011 | 06:14 PM
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Yes - The castor arm or thrust arm bushes are silicone filled & crack & leak. There are lots of threads on this problem.

See attached pdf on the issue. ignore VIN's. Even the W204's have this problem.









https://mbworld.org/forums/attachmen...h-bulletin.pdf


Good luck
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Old Oct 6, 2011 | 06:53 PM
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I drive a Toyota Hybrid...
+1 on the sway bar end link
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Old Oct 7, 2011 | 02:37 PM
  #9  
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02' C230 coupe kompressor
Originally Posted by kirax2
+1 on the sway bar end link
from looking at the DIY sway bar thread ima check if my sways are bad. I dont know how to check if my bushings are bad though..i didnt see any leaks..this is the picture on the left side of the car looks like its been leaking..Squeaky noise may be suspension problems?-f869a762.jpgSqueaky noise may be suspension problems?-b6af7395-1.jpgpicture on the right side of the car

here are more pics..

http://s62.photobucket.com/albums/h1...0car%20repair/

Last edited by smanzor88; Oct 7, 2011 at 04:29 PM.
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Old Oct 7, 2011 | 07:18 PM
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
That castor bush in your picture is finished. Look at the cracks!
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Old Oct 7, 2011 | 07:33 PM
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2002 Mercedes Benz C230 Coupe
Originally Posted by Glyn M Ruck
That castor bush in your picture is finished. Look at the cracks!
+1

You need upper and lower control arms replaced.

I would recommend against replacing only the bushings because usually the spindle joints (at the outer end of these control arms) are also probably worn already, or if not will wear out soon. Easier to replace the entire arm.

While youre at it, check your sway bar endlinks by holding and shaking it at both ends. If you feel any play, you might as well replace them too.

Other parts to check are the outer tie rod ends. Check for play at the outer end where it connects to the wheel hub.

Trust me, its easier to replace all these at one shot than replace them one at a time, do an alignment and then find out that something else is worn out a few months later. Learnt from experience.

Check the other side too..they usually tend to wear out in pairs.

Good luck.
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Old Oct 7, 2011 | 08:19 PM
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
On a 2002 this might be wise if mileage is high. The Castor bushes in my pics above were at 30,000Km on my car & still under warranty. If you unload the suspension you would be surprised how those cracks open up.
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Old Oct 8, 2011 | 03:00 PM
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Hi Glyn,

how about 2005? My mechanic told me I need to replace upper CA bushings. Seems like everything there is still original up to now, 113k miles He said ball joints (?) are OK. I was thinking about replacing the two control arms instead of just the bushings. So the difference price-wise should be around $100 then?
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Old Oct 8, 2011 | 06:18 PM
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I got the same problem with my 2005 C230 too.
What is the average cost to replace the bushing or lower/upper control arm.
Thanks.
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Old Oct 8, 2011 | 08:15 PM
  #15  
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
With newer cars just press in new bushes. All of my ball joints are still original & have zero play in them. My suspension is absolutely silent.

These cars go through about 4 castor bushes to one camber bush. The camber bushes seldom fail. The bushes are cheap.
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Old Oct 8, 2011 | 10:34 PM
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Good to know! Thanx Glyn.

Mercury,
Houston dealer quoted me $780 to replace two upper control arm bushings.
Indie mechanic quoted about half that sum.
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Old Oct 9, 2011 | 12:46 PM
  #17  
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From: Llandudno, Cape Town, South Africa
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What a rip off!. The bushes are about $20 each. With the correct tools you just push them out and push new ones in on the car. Stealers!!!
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Old Oct 10, 2011 | 04:14 AM
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Originally Posted by VVF
Good to know! Thanx Glyn.

Mercury,
Houston dealer quoted me $780 to replace two upper control arm bushings.
Indie mechanic quoted about half that sum.
Thanks for the reply.
I will definitely check my car bushing on the coming weekend.
Hopefully the are all good.
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Old Oct 10, 2011 | 08:01 AM
  #19  
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W203 C200 komoressor
Hi guys, on my c200k 2001
I recently replaced both lower and upper arms,
Sway bar bushings, and links.
After further inspection, i finally found it.
The rattle is coming from a loose steering part that is parallel or behind the sway bars. It is hitting the metal plate cover.

Any idea how to fix this?

Thanks
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Old Oct 11, 2011 | 01:53 AM
  #20  
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Originally Posted by Het Joo!
Hi guys, on my c200k 2001
I recently replaced both lower and upper arms,
Sway bar bushings, and links.
After further inspection, i finally found it.
The rattle is coming from a loose steering part that is parallel or behind the sway bars. It is hitting the metal plate cover.

Any idea how to fix this?

Thanks
Any picture?
Thanks.
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Old Oct 11, 2011 | 06:39 PM
  #21  
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2003 C240
Similar to yours but at the rear..Mine also squeaked( no rattles) on bumps & dips. Seem to be more pronounced in the afternoon as well. I noticed that when it rains it doesn't squeak. So I sprayed/lubed every suspension related joints,bolts,nuts I can reach...No more squeaks!...been good so far.

Good luck.
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Old Nov 28, 2011 | 11:36 AM
  #22  
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Originally Posted by Glyn M Ruck
With newer cars just press in new bushes. All of my ball joints are still original & have zero play in them. My suspension is absolutely silent.
Hi Glyn!

OK, I finally had my bushings done.
The mechanic had to take off the entire thrust arms to do that.

Do I need to check/correct the wheel alignment after doing this?
(the bolts in thrust arms were standard, not from a 'bolt kit')
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Old Nov 28, 2011 | 03:17 PM
  #23  
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
You need to check the alignment. Without the bolt kit all you can really adjust is the toe. It's likely that your alignment will have improved with new bushes but at least have it checked or you will ruin a good set of tyres. Don't pay much for the alignment because all they can do is toe unless you decide to buy the bolts. I would buy the bolts if they can't get the alignment in spec without them.
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Old Nov 28, 2011 | 04:22 PM
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Originally Posted by Glyn M Ruck
You need to check the alignment. Without the bolt kit all you can really adjust is the toe.
Okay, thank you. But the thing is, I should have the 'camber bolt kit' installed by dealer. Apparently, they only installed 2 out of 4 (?) bolts - if they installed anything at all
So if the alignment turns out to be pretty bad, I will have to buy the caster bolt kit then?
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Old Nov 28, 2011 | 04:35 PM
  #25  
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Your guy had to take the thrust/Castor arms off because he does not have the Benz bush tool to press them out & in, in place.

You do not have to get a dealer to fit the bolts. Any decent alignment shop can change them. In SA all our tyre shops carry Benz bolts in stock.

The car comes new with standard bolts in the castor & camber bushes. So you need 4 bolts if it has never been touched.

EDIT. If the alignment is bad you will need 4 bolts.
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