WillyG

Let's just jump right into it. My left rear sags just a tad lower than my right rear. Maybe a half inch. Also the car drops on the left side if sitting idle for 5+ mins. I get an ABC error once every month or two, and it's always when I have passengers in the rear.. Does this sound more valve block related or a leaky strut? They say if your car levels out when started its your valve block. I think mine levels out when started, but what would cause the abc error with passengers in the rear?

I also get horrible outside tire wear in the rear. 6k miles if I'm lucky. With the left rear side wearing slightly worse. Fronts wear fine. Maybe bad abc module..

knowbenz

If it drops when the car is shut off then yes, rebuild the valve blocks. For the light you will need to scan for codes. Possible pressure accumulators, would have to be tested first

ItalianJoe1

If the normal running height is not level, have the car leveled and aligned, and the rear suspension checked. You may have worn bushings or need adjustment, which would also affect tire wear.

geeves66

2006 S55 AMG 107k miles... Car was at a standstill for a while at idle and noticed the car "jump" every once in a while. Started to feel that jump more regularly later on. Long story short, i had a leaking strut on the rear and the car was compensating for the leak. I changed the strut with a used one off of Ebay (around $200 and $400 for installation) and never felt the car jump after that. And that was 2 years ago.