Help-2004 4,4i sport package left rear shock sagged after being parked for three days

[bcolins]

After being parked Thursday,....when I returned on Sunday,....the left rear corner had dropped about 4". Its level with the top of the tire. Started it and it came back up last night. Waiting now to see what it does.

My best guess is that since it dropped on one side only and I don't have any warning lights,....that most likely it is the shock itself that is leaking and not a sensor or improperly positioned linkage that I have read about here,.....as those cases always seem to have BOTH SIDES dropping.

Am I correct on my thinking on that,.....since its one side only?? How do I pinpoint the leak location? Do I spray soapy water on the shock and elsewhere,.....or, do I just listen for a hissing sound??

Brian in Cedar Park

I have had a number of self leveling BMW and Mercedes cars over the years,.....always problematic,....honestly, I don't know why manufacturers continue to use them.