Suspension squeaks while turning?

BHAMDOC1973

MEMBER
2007 MERCEDES BENZ S600
V12
TURBO
2WD
AUTOMATIC
100,000 MILES

No clunking while driving, just that it squeaks while turning. Suspension is tight, not sure how to diagnose it, this always gets me when it's an S Class. I had my son hold the steering and I asked him to just move it back and forth and sprayed everywhere but still can't find where it's coming from.

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Saturday, July 16th, 2022 AT 10:38 AM

7 Replies

KEN L

MASTER CERTIFIED MECHANIC
54,217 POSTS

Thanks for the video, it helps when trying to solve noise issues. The first thing I would do is make sure the wheel is tight to the car. Here is a guide to show you how:

https://www.2carpros.com/articles/wheel-removal-and-re-installation

Next, it sounds like it could be a dry ball joint or tie rod, when the sounds are being generated out your hand on these parts to see if you can feel a vibration, the more prominent the vibration the chances are the part needs to be replaced/lubricated. Here is a video on how to change the tie rod end out on a similar car:

https://youtu.be/rBP2UKYtIl0

Please let us know what you find. We are interested to see what it is. You sprayed with WD40 correct?

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Saturday, July 16th, 2022 AT 7:10 PM

BHAMDOC1973

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Yes, I sprayed some grease, garage door spray lol, all I had, it did get a bit better. Showed the video to someone else they said most likely the ball joint. Tried to feel it with my hand but it's so difficult, these cars are so heavy and with a lot of pressure on them hard to know.

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Saturday, July 16th, 2022 AT 7:22 PM

KEN L

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Yep, if you are sure which side it is the ball joint is probably the cause. To confirm the problem you may be able to puncher a small hole in the boot and spray wd40 directly into the joint if the noise stops you found the problem.

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Sunday, July 17th, 2022 AT 11:05 AM

BHAMDOC1973

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Seems like it's coming from the upper control arm. When feeling with hands that is where I see the play is. Also, the noise coming from the top when raising the car as in the video.

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Tuesday, July 26th, 2022 AT 8:09 AM

KEN L

MASTER CERTIFIED MECHANIC
54,217 POSTS

Thanks for the videos, they help. Yes, it looks like that is where the play is coming from as well, here is how to change out the upper control arm s to fix the problem. Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

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