I have a 2008 S500 , the car is not level , the driver side is down on 2008 Mercedes-Benz S550

The front an back suspension of the driver side lift a little bit and than fall again , that make the car not level , I try many time to level it but not working . What could be the problem ??? is it related to pressure hose ???

Meany tks for helping

Asked by for the 2008 Mercedes-Benz S550
seek diag and est from a good mbz tech