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S-Class (W222) 2014-2020

Suspension components refresh - help

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Old May 3, 2021 | 07:11 PM
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Suspension components refresh - help

I have about 80K miles on my car now. I can hear a noise coming from the front end when I push up/down on the front end, and can also hear the same (or another) noise constantly as I am turning the steering left/right. Car drives super smooth, just noise.

Dealership recommended this part: Lateral Arm (222-330-23-01), both left and right. Link: https://www.mercedesbenzstarparts.co...arm-2223302301

Questions:
  • Do you all believe that this part could cause a noise as you turn the steering? or could there be also another part that needs to be replaced since the noise immediately appears when steering is turned left/right. Another (or same) noise appears when I push on the front end.
  • Any other websites you recommend for this part?
  • Given the fact I have about 80K miles on my 2015 W222, do you recommend that I replace any other suspension components on the way while am doing this job? Liek Stabilizer Link, or what-else? I want to be proactive and do it all at once cause am keeping it for 4-5 more years.

Last edited by S_W222; May 3, 2021 at 07:13 PM.
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Old May 3, 2021 | 08:44 PM
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My Maybach had a lower suspension arm replaced under warranty with about 30000 miles on it. It was making that squeak noise. Noise has been gone ever since.
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Old May 3, 2021 | 09:29 PM
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Any suspension parts ever been replaced? All original? Worn suspension parts are easy and quick to ID by a pro.

At 80k, ball joints could be worn, too. BTW a good Indy can do all this work to include allignment.
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Old May 3, 2021 | 10:37 PM
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Originally Posted by Donnymac
Any suspension parts ever been replaced? All original? Worn suspension parts are easy and quick to ID by a pro.

At 80k, ball joints could be worn, too. BTW a good Indy can do all this work to include allignment.
No, nothing was changed at all. I have the lower control arm, and the lateral arm on my list to replace. I am not sure yet about the upper control arm, and wanted to see if others think it is a good idea to replace it too, but I believe the upper control arm and it's ball join would last longer as it has less stress than the lower and lateral control arms.
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Old May 4, 2021 | 12:00 AM
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MB is not an exotic suspension. Take it to a pro Indy and let him look. If he's a pro, he can tell you what you need...no guessing. Bushings on these heavy cars wear out. Same for motor and trans mounts. Just go to a pro and get fixed up.
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Old May 4, 2021 | 10:37 PM
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I replaced both lower control arms (also known as spring control arms) on my S at just 40,000 miles. This immediately fixed the problem (squeaking). Sadly, on cars with MBC this replacement process isn't possible without the STAR programming technology.
I recommend replacing the lower control arms before anything else; From what i've seen, that has always been the cause of squeaking.
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Old May 4, 2021 | 11:03 PM
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Originally Posted by Sean._.S
I replaced both lower control arms (also known as spring control arms) on my S at just 40,000 miles. This immediately fixed the problem (squeaking). Sadly, on cars with MBC this replacement process isn't possible without the STAR programming technology.
I recommend replacing the lower control arms before anything else; From what i've seen, that has always been the cause of squeaking.
Well, this is why I am super confused. The mechanic on the results sheet recommended I replace the SPRING ARM..... to me I know that SPRING arm is actually, like you said, is the lower control arm!. However, when i asked the service advisor to translate Spring arm to a part number so I can order, when i crosslinked the part number, he gave me a part number that leads to the Lateral Arms. I am not sure now what is the spring arm!, is it the lower control arm or lateral arm!).
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Old May 5, 2021 | 04:02 PM
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I've also heard that the two lower arms in front wear out fairly early, like by 50k. They have a ball joint at the spindle end and a bushing at the body end and either or both of these can get loose and affect the ride and steering. Good news is they're fairly inexpensive and simple to change.
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