Front right suspension squeak/creaking sound from bumps/turning wheel - Mercedes-Benz Forum

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Old 02-23-2011, 02:53 AM   #1 (permalink)
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Front right suspension squeak/creaking sound from bumps/turning wheel

Does anyone know what would cause the suspension to squeak or creak from going over bumps (car bouncing) as well as from turning the wheel while car is parked? This occurs only on the front right suspension. The sound became worse after a 1330 mile trip. Car handled the trip flawlessly besides this issue.

The sound from inside the vehicle is like a old door creaking, or bed springs creaking. From outside it sounds like that as well, with the added clanking sounds the brake dust shield makes.

I have uploaded a video (sorry it was night time) of me pushing the front end down to record the sound of the suspension. As you can hear it isn't a good sound, and is pretty audible. I have taken the wheel off during the day to check and I can't seem to find anything wrong except a worn boot from the sway bar link (top boot seems torn, but I don't think sway bar link could make this much sound?). Bushings on control arm look okay, hard to tell while mounted. Ball joint looks normal. Shock absorber does have signs of oily residue (the other 3 also looks the same, but not making the same sound). Maybe coil spring? Couldn't see any obvious wear on the springs. I have H&R springs in the front from 2004. Previous owner installed them to lower the car, I do not have originals.



Any help is greatly appreciated. I would be doing replacement of all four shocks next month as well as steering dampener, I would also like to fix this issue
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Old 02-23-2011, 03:00 AM   #2 (permalink)
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I don't know what may be causing this issue, but please let me know the how your ride quality improves with the replacement of your four shock absorbers. I have the same oily residue on the shocks.

-Z
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Old 02-23-2011, 04:54 AM   #3 (permalink)
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It's either a dry tie rod end or ball joint.
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Old 02-25-2011, 12:56 PM   #4 (permalink)
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ball joint. Mine is doing that right now.
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Old 02-25-2011, 02:29 PM   #5 (permalink)
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ball joint. Mine is doing that right now.
Have you changed yours? What made you sure that it was the ball joint? Tie rod sounds likely too.
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Old 02-25-2011, 02:34 PM   #6 (permalink)
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On mine i had a similar sound coming from the front right side and it was the shock absorver. It has a part at one end, that can deteriorate (from my language that part could be translated as silent block).
A couple of parts were changed to new ones on the right side (ball joint also) but the sound remained, till a car service found that the shock absorver was causing it.

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Old 02-25-2011, 05:27 PM   #7 (permalink)
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Best way to tell is to jack up the car, remove the wheel and disconnect the tie rod from the spindle. Now move the spindle back and forth and listen for the noise or if it feels tight. If it is loose and quiet, then it is the tie rod end.A shock absorber does not turn with the wheel, so it cannot cause this noise.
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Old 02-25-2011, 07:44 PM   #8 (permalink)
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To state the obvious. Have you done the typical front end overhaul with control arm bushings etc?
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Old 02-25-2011, 08:35 PM   #9 (permalink)
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It could also be a dry stabilizer bar bushing too, but there are a number of bushings that could create this sound.

Might be good to inspect all front end parts (front elevated off the ground) and see what's good / bad and make your plans for replacement.

I can attest to the benefit of replacing shocks, I did mine not so many miles ago and it made a huge improvement, especially the rears, which had never been replaced before. The improvement in the front was marginal since a PO had already replaced them once. The shocks I replaced on the front were MB and I elected to box them up and toss them in the attic just in case someone else needed them. My replacements were Bilsteins.

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Old 02-25-2011, 11:48 PM   #10 (permalink)
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To state the obvious. Have you done the typical front end overhaul with control arm bushings etc?
Haven't done anything with the front end.

I'll have to take it to a shop that has a lift to check it then...

This might be clue or not, but sometimes it doesn't make the sound at all when I bounce the front end. Sometimes it is very easy to make the noise, any movement such as opening door or getting out of car will cause the noise. Some days I can be sitting on the hood bouncing and it doesn't produce the sound.
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