The rear suspension drops on my 2002 SL600 when it is parked for more than about a week. When the car starts, the suspension comes back to normal ride height. The suspension rises as normal in either of the two higher positions using the dash switch.

Is this a pretty good indicator that the hydraulic accumulators on the rear suspension are shot?

 

Alldatadiy.com has suspension information that may help you with your current issue. Couldn't hurt! Good Luck!

 

Not shot just bleed off when parked, had same prob w'03 sl500 . $1800 ea for parts but i found a guy in florida who rebuilt @ a third the price pm me later i get u info.

 

Might want to bleed the system and replace the spheres