2012 S550 Big Repair Bill Incoming - Ongoing Saga
when u said they greased bushes you shouldn't do it, these days its doesn't work - and of course german rubber suspension and ARB bushes are created from the cheapest nastiest die in 3 years crap you can fit on any car
on the front ARB (antiroll bar) the main bushes made such a noise when the car's where first released - the cure was to TRY and bond the bushes to the bar to stop horrible noises - its doesn't work especially as they age and the rubber hardens and shrinks back - letting the bad gluing session fail
you may get a knock too that's often there and you feel on the brake pedal as you gently come to a rest - this is the arm physically rattling inside shrunk stiff bushes - tends to be especially a week after its been driven in a far bit of wet weather - then the squeaking comes as the sun comes out
new ARBs come with the bushes pre-bonded on the ARB and the part number for a new bush on its own was deleted from parts availability some 10 plus years back - some bodge up aftermarket trash bushes are out there to try and DIY without the relatively crazy cost of a whole arm and half the worlds steel wasted...








It's been almost two weeks, a bit concerning but still have hope. For the little bit that it was fine, it felt really good to drive with the new mounts.
I explained in my earlier post how you need to take the upper wishbone arm loose and let the wheel hub turn as you lower it down with a jack of some sort. The hub turns and after it has made it's move the force is relieved from the ball joints and you can feel how bad they are.
Did you see that the front struts were really replaced? If you had this same noise before the work and it disappeared for a week or so this can be done by lubing the worn ball joints that will last for a few days, just saying...
Replace the load bearing lower control arms (the rearward ones) and you will be fine, guarantee it! They are like $350 a piece. I bought mine from FCP Euro but I cannot find them in their pages anymore...? MB should have them.
P.S. If the garage says they replaced the lower control arms as you indicated in your firs post, you have been hosed pretty good by them!!!
Last edited by Arrie; Jul 26, 2024 at 06:32 PM.




I explained in my earlier post how you need to take the upper wishbone arm loose and let the wheel hub turn as you lower it down with a jack of some sort. The hub turns and after it has made it's move the force is relieved from the ball joints and you can feel how bad they are.
Did you see that the front struts were really replaced? If you had this same noise before the work and it disappeared for a week or so this can be done by lubing the worn ball joints that will last for a few days, just saying...
Replace the load bearing lower control arms (the rearward ones) and you will be fine, guarantee it! They are like $350 a piece. I bought mine from FCP Euro but I cannot find them in their pages anymore...? MB should have them.
P.S. If the garage says they replaced the lower control arms as you indicated in your firs post, you have been hosed pretty good by them!!!
The only other place where this noise could come from is the ball joint at the lower end of the strut. But hey, they were all changed out, right…?
@Arrie It was the upper control arm, which they admitted was a misdiagnosis. They have refunded me the full price ($1,100) for that. I even told them that I am okay with paying since I know they spent a lot of time on the car, but they strongly insisted that they do not replace parts for no reason and charge customers. I did check the strut and it's brand new.
Maybe soon I will consider what @vettebk did and do a full suspension rebuild, but for now I am a happy camper.
Thank you again to all for the input, I learned a lot about the car's suspension.
The Best of Mercedes & AMG




We did the installation at 95K miles and my indy charged me for 10 hours. I thought it was a good deal after picking it up and taking it for a test drive. The suspension was much more compliant, taking bumps better, smoother, just like an S Class is supposed to be. No squeekes and no clunks. I was super happy. These platforms are great to build on.
Of course, last week I made a sharp left turn at an intersection and didn't see the concrete island and I ran up and over the island with the entire left side of the car. I was worried I had bent a new component, but apparently I got lucky this time. It would be just like me to put in a new front end only to bend it running over a concrete island.
Now working on refurbishing the wheels. Found an AWRS shop (Alloy Wheels Inc) with a hydraulic wheel straightener and they are refurbing my wheels this week. Will post the results. Our alloy wheels are made from chewing gum wrappers!
acid dip
bead blast
add a pretend coat of nothing - which falls of Merc alloy inside 2 years
or u buy a ford and they never need doing
Funny you mention, been looking for a 1940's Ford for some time now. Tough find.




But there is a lesson in all of this. And I hate paying the tuition.
I will update after I get the refurbed wheels mounted on the S600. I plan to do the two on the drivers side first for driver comfort (me), then redo/refurb the passenger side two wheels presuming I am happy with their work.
I'll be doing all 4 simultaneously at the recommendation of the shop, for consistency purposes.




Right again, BOTUS, One of my other cars is a 2017 Ford Mustang 5.0 GT (36K miles) and the wheels are much better. Same potholes my Mercedes hits causes absolutely no damage to the Mustang. And the Mustang drives very smoothly at 60 mph on the highway and is solid well above 125 mph (on the racetrack of course). Same Michelin tires as on the S600 (different size).
I agree the Ford wheels are better. If Alloy Wheels, Inc. can't make my Mercedes wheels work, I plan to buy new after-market wheels for the S600 and simply stop the lunacy permanently. Imagine, a Mercedes S600 with Ford wheels...... Heresy.




https://phoenix.craigslist.org/searc...=1~gallery~0~0
Alpha European Autotech
Purchase Amsoil at 25% off from me
Chris Tran, Retired Alpha European Autotech Owner
Amsoil Independent Dealer #7236674




Apparently the shop is a franchisee of an outfit called Alloy Wheel Repair Specialists (www.awrswheelrepair.com) with nationwide owner operated shops. He also sells BBS wheels and I learned that BBS wheels are Japanese.






