xircom200

My 2004 SL55 tends to sag on the rear left wheel after sitting in my garage for 2-3 days. It for sure is not leaking anything because I have placed a white sheet of paper to see if anything leaks and have never seen a single leak of any fluid. When I turn the car back on and let it sit the car comes back up to normal height… I know my service battery in the rear needs to be replaced, is this related to the battery not having enough juice? Any input would be great !

G_KATS

that could be one reason .... or u can have a bat weak strut ..... either get it fixed or just leave it .... think about it WHO CARES!! u said it goes back to normal once u start the car .

try the battery 1st ..... if that works , then ur lucky .... because changing stuff on these SLz suspension isnt cheap .

If u have warranty.... use it !


good luck , dont stress ..... just lower it . its a sign from GOD saying look how much better it looks

IngenereAMG

There is a leak in your ABC system somewhere causing the loss.

As with anything, if you just ignore it, you could end up with worse and more expensive problems, as well as a safety issue. Get it checked out and fixed.

LWD SL55

What does ABC stand for ? sorry if this is a dumb question.

rsr911

I believe it is automatic body control. Roughly put active suspension keeps the car level, anti roll etc.

sprins

It may be a leaking valve in the ABC (Active Body Control) system. As long as nothing is leaking oil the problem might not be too expensive.

rsr911

Thank you. I thought I was close. Sorry for incorrect info.

LWD SL55

Sprins any ideas on what this could be ? In case it ever happens to me.....

BMS

I had this happen not once but three times on my SL55. It was fixed at Mercedes of Ann Arbor under warrenty. There are forum threads concerning this problem somewhere on this site. If you do a search you should find them. I did find a technical service bulletin, #P-B-32.50/34b. I was told it was a bad valve block. Other references were made about bad valve head, ur struts, battery or alternator. My service record the third time reads: check abc system, left rear sinking, recheck all line connections, rodeo car to reset valves in valve blocks. I guess its pretty easy to get a small piece of dirt in the line. Hope this helps.

LWD SL55

I had this happen as well, new battery in the truck and problem solved