S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600
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Lower control arms sounding like spring mattress ?

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Old 10-22-2015, 02:07 AM
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Mercedes-Benz 2007 S550, 2012 S550 4-Matic, 2015 GL450
Originally Posted by MattRuss
How's the wd40 holding up ?
Latest update...still not squeaking. I'm actually amazed now. Drives like a dream...as an S-Class should.
Old 10-22-2015, 02:28 AM
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Originally Posted by Cynical
I need to replace my lower control arms. Anyone have any experience with the aftermarket control arma on eBay?
No experience with buying aftermarket control arm from Ebay. That said, I would be careful of the ones that advertise as German Parts Saver with a German flag. They are probably made in China. Occassionally, you can get an OE Mercedes control arm at a discount when some shop wants to do a fire sale. Otherwise, best bet is to go with and OEM like Lemforder. I was told they manufacture the OE control arm part for Mercedes.

http://www.ebay.com/itm/Mercedes-w22...5Vf0kD&vxp=mtr

Also make sure to check if the control arm is for an ABC or non-ABC vehicle.
Old 10-23-2015, 10:09 PM
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both of my front lower control arms are being replaced. plus strut bars as well. how i see it is why even go with ebay lower control arms. spend the money and get the right stuff for your vehicle. i know the squeeking noise is ridiculous mine did it bad.
Old 10-24-2015, 07:01 AM
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Originally Posted by KNBS550
No experience with buying aftermarket control arm from Ebay. That said, I would be careful of the ones that advertise as German Parts Saver with a German flag. They are probably made in China. Occassionally, you can get an OE Mercedes control arm at a discount when some shop wants to do a fire sale. Otherwise, best bet is to go with and OEM like Lemforder. I was told they manufacture the OE control arm part for Mercedes.

http://www.ebay.com/itm/Mercedes-w22...5Vf0kD&vxp=mtr

Also make sure to check if the control arm is for an ABC or non-ABC vehicle.
Ive bought Lemforder lower front controlarms. Replacing on wednsday. Pray to god those are all i need to changen. I dont even want to drive my new car i bought. 😖
Old 10-28-2015, 02:57 PM
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Changed lower front controlarms.
Still sound like ****. Pisses me off big time!



This is how bad the controlarms were...
Old 10-28-2015, 05:18 PM
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yes lower control arms can cause the noise but also look into the your front and rear sway bars. my bushings were shot. im gettin the warranty company to replace to complete front and rear sway bars. the other fix is just use a glue. use the search engine on here and alot of people have posted about this. it seems almost stupid to have to use glue on our cars. but thats just the only fix from what i know.
Old 10-28-2015, 11:19 PM
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Originally Posted by Cynical
Changed lower front controlarms.
Still sound like ****. Pisses me off big time!
Well, it looks like the control arms needed to be changed anyway. You might want to try spraying WD40 on the sway bar bushings. My car still doesn't sqeak after the shop did that. My guess is the bushing's polymer material was probably so porous that it'll sucked all that lubricant up and has been able to retain it for as long as it has to keep my car's suspension from squeaking. What do you have to lose?
Old 10-29-2015, 03:55 AM
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Originally Posted by KNBS550
Well, it looks like the control arms needed to be changed anyway. You might want to try spraying WD40 on the sway bar bushings. My car still doesn't sqeak after the shop did that. My guess is the bushing's polymer material was probably so porous that it'll sucked all that lubricant up and has been able to retain it for as long as it has to keep my car's suspension from squeaking. What do you have to lose?
Thanx!
Yeah im going to try WD40.

Question: Do you have any pics of where you prayed? Did you have to unscrew anything or you just sprayed?

Is it possible to buy bushings separatly for our cars?

Im going to lift my car up and try WD40 on every damn place i can find lol

Last edited by Cynical; 10-29-2015 at 03:57 AM.
Old 10-29-2015, 08:41 PM
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Originally Posted by Cynical
Thanx!
Yeah im going to try WD40.

Question: Do you have any pics of where you prayed? Did you have to unscrew anything or you just sprayed?

Is it possible to buy bushings separatly for our cars?

Im going to lift my car up and try WD40 on every damn place i can find lol
Unfortunately, I didn't take photos when it was on the lift at the shop. However, the sway bar is just one long rod with bushing at each end held in place by metal brackets. Looks something like this...



Source:Username G-AMG on BenzWorld.org


Just spray heavily onto the rubber 'doughnut' shaped bushings. No need to remove anything. You should be able to see the sway bar towards the corners by each wheel.
Old 11-02-2015, 05:27 AM
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No luck. Sprayed a couple times now.
Cant localize the noise but its from both front and rear and sounds soooo bad.
Replacing rear sway bar looks expensive..: really expensive!! Like you have to tear down half the car.
Old 11-04-2015, 10:58 AM
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Mercedes S350 2006
Solved by using needle to add some lub into the rubber

Old 11-04-2015, 11:37 AM
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Originally Posted by Cynical
Solved by using needle to add some lub into the rubber
I thought you replaced the lower control arm? It looks like the original component in the photo.
Old 11-04-2015, 11:40 AM
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Hi, i replaced the front lower control arms. Its the more silver"ish" arm behind this one in the pic

Hmm might be called strut Rod. Dunno, says different things depending on Where i look :/

Last edited by Cynical; 11-04-2015 at 11:43 AM.
Old 11-04-2015, 11:48 AM
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Originally Posted by Cynical
Hi, i replaced the front lower control arms. Its the more silver"ish" arm behind this one in the pic
OK, so you replaced the FRONT THRUST ARM as opposed to the LOWER CONTROL ARM, which is the one with the airmatic strut connected to it. My recommendation was to replace the control arm, but glad you were able to take care of the issue driving you nuts!!!
Old 11-04-2015, 11:53 AM
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Originally Posted by KNBS550
OK, so you replaced the FRONT THRUST ARM as opposed to the LOWER CONTROL ARM, which is the one with the airmatic strut connected to it. My recommendation was to replace the control arm, but glad you were able to take care of the issue driving you nuts!!!
Haha ya im retarded.

But to be honest. I asked the mechanics, he called it lower control arm. Ordered online, and it was called lower control arm. Wierd. =P
Old 02-07-2016, 01:05 AM
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Latest update...I had the whole sway bar and the bushings replaced. The WD40 fix worked really well for months. I was hearing a slight rubbing noise once in a while on bumps, but I'm kind of a stickler for details, so $450 bucks later at a Mercedes master mechanic's indie shop, I don't have to hear it anymore. I guess the whole sway bar and bushing now comes from the Mercedes dealer as one piece mated solid to each other. No more silly gluing the bushings per the Mercedes technical bulletins when these first became a problem. Rides like an S-Class should.
Old 09-17-2018, 12:00 PM
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Thumbs up

this WORKS!!!!
I was getting ready to replace 221 330 82 07 then saw this post from Cynical, I was not optimist but I thought, hey what's the worst could happen, I would just replace the control arm anyway.

I had to made a small incision with but cutter then spray WD-silicone lube using the plastic needle generously, left it overnight and OMG it's sooo smooth and quite in the morning!!!! so happy about this temporary fix. LOL!!! thank YOU for posting this, Cynical!

I figure this is a temporary band-aid... at least I can hold off replacing the control arm ...
I think the one that need lube is the ball joint directly connected to the suspension, but I applied to both as indicated in the picture.
if anyone needs to do this, I recommend getting the needle lube applicator (harbor freight?), it may be able to make smaller incision compare to box cutter.
Also, silicone based lube is better for the rubber (compare to lithium or wd-40 base)


Originally Posted by Cynical
Solved by using needle to add some lub into the rubber

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