Buying a 2010/2011
Dance mom/participant PO did smoke in it though and it’s coming back so another ozone cure is in the cards then swap out cabin filters.
just put 75 miles on her in glorious pnw weather with a full cabin and not much issue with it from my kids so my nose is super sensitive to cancer stick usage I guess.
codes out as a b24/15 yaw rate sensor failure (likely loose). I’m not at WIS right now and no specific location for this module in the w221 exists on the internet.
anyone know where it is?
cleared all errors and will see if it reappears.
more likely an ABS wheel speed sensor wire doing what they do - although that ought to get a speed sensor error - but they often start to die or fail in one hit after large bumps
All fluids are critical and get replaced immediately after a purchase, regardless. It's a peace of mind thing for me, and it's paid off in the past.
The history points to the b24/15 connection being directly under the unsealed region of your trunk and got a good shower or two.
Maybe you can check your Carfax report and find out who to charge for the sensor replacement.
The Best of Mercedes & AMG
otherwise it’s lowering links to trick the airmatic ECU into thinking it’s at normal height, which I have not done.
im noting the overall better quality of the OEM arms and wondering if the outer ball joint can be pressed or pullled out and a suitable replacement exists - because then I’ll just have two rotable sets of arms in inventory for when it chews through them.
also, got a know good yaw rate sensor from a wrecker in case this error presents itself again, but one week of driving and no errors.
i can also not find the sway bar bushings anywhere, which it needs.



im noting the overall better quality of the OEM arms and wondering if the outer ball joint can be pressed or pullled out and a suitable replacement exists - because then I’ll just have two rotable sets of arms in inventory for when it chews through them.
also, got a know good yaw rate sensor from a wrecker in case this error presents itself again, but one week of driving and no errors.
i can also not find the sway bar bushings anywhere, which it needs.
after market sell bushes - unknown quality - either way they need to be glued on with a polyurethane glue - gorilla makes some
It’s worth a shot before I shell out 175 for a new OEM front sway bar.
if you do glue these in place, I believe you would absolutely have to do it with the wheels loaded, otherwise the bushings would not be glued in the right spot. If indeed they appear to need to be glued, I would have the car off the ground and level at all 4 Wheels and the car sitting on blocks or something else to make sure it's correct
Last edited by Max Blast; Jan 21, 2026 at 07:26 PM.
if you do glue these in place, I believe you would absolutely have to do it with the wheels loaded, otherwise the bushings would not be glued in the right spot. If indeed they appear to need to be glued, I would have the car off the ground and level at all 4 Wheels and the car sitting on blocks or something else to make sure it's correct
I have replaced the abhorrently squeaky sway bar bushings with an Amazon set ($25) and did not glue them on.
added to that two new lemforder sway bar links at 50 bucks each
Also, replaced both torque arm bushings with lemforder ones - just press the old ones out with the arm still attached in the ball joint ($75 for both)
But the key enabler of this was a dirt cheap bushing tool press kit on Amazon - it’s about 170 bucks and very well equipped. I had a set of Baum bushing press tools arrive at the same time courtesy of FCP euro and overnight shipping, but I ended up not even using this tool because the cheapo Amazon one was more than adequate.
now, kind reminder that you always torque everything back down with weight on the front wheels otherwise you’ll just tear the new bushings immediately.
And it’s really nice and quiet, and all squeaks is eliminated for about $375. The cool thing is that this kit has so many different diameter cups that I’m going to tackle the rear end with them as well and just find the bushings instead of brand new control, arms of dubious quality.
ZKTOOL 40Pcs Universal Pull and...
I will say that my back is kind of sore, but this is entirely DIY with a floor jack and some wooden blocks and a couple jackstands.
Last edited by Max Blast; Feb 26, 2026 at 08:31 PM.
I have replaced the abhorrently squeaky sway bar bushings with an Amazon set ($25) and did not glue them on.
added to that two new lemforder sway bar links at 50 bucks each
Also, replaced both torque arm bushings with lemforder ones - just press the old ones out with the arm still attached in the ball joint ($75 for both)
But the key enabler of this was a dirt cheap bushing tool press kit on Amazon - it’s about 170 bucks and very well equipped. I had a set of Baum bushing press tools arrive at the same time courtesy of FCP euro and overnight shipping, but I ended up not even using this tool because the cheapo Amazon one was more than adequate.
now, kind reminder that you always torque everything back down with weight on the front wheels otherwise you’ll just tear the new bushings immediately.
And it’s really nice and quiet, and all squeaks is eliminated for about $375. The cool thing is that this kit has so many different diameter cups that I’m going to tackle the rear end with them as well and just find the bushings instead of brand new control, arms of dubious quality.
ZKTOOL 40Pcs Universal Pull and...
https://www.amazon.com/dp/B0FMJM3145...p_mob_ap_share
I will say that my back is kind of sore, but this is entirely DIY with a floor jack and some wooden blocks and a couple jackstands.
Have done a few clutch/gearbox swaps with little more than a trolley jack and ramps, but the 722.9 is always a shop job😉
The biggest issue with doing suspension work on the ground is getting the car high enough to be able to use a long enough bar to get the nuts and bolts undone. Although credit where it's due, my 132k mile 2006 S500 is cleaner underneath than my 2004 Vauxhall Omega (Catera for you Colonialists) wagon was at 5 years old🤐
I’m pushing 50 and a repair job like this carries with it a day in the penalty box if I use the creeper.
otherwise, the two other things left to do is to:
replace the rotation sensor behind the trunk panel - the incumbent has finally failed completely
Put the steering wheel back on straight, which necessitates a forensic investigation into which connection was broken in the past - whether it was steering wheel on the shaft or the shaft connecting to the steering rack.
Does anyone know whether the steering shaft to rack connection is a splined connection? I heard that particular disconnect was a six hour job with subframes, etc. etc..







