The system I am talking about is NOT a self leveling system. This system is full hydraulic and has no coil springs front or rear. This system can raise the car above normal ride height with a switch on the dash. This system is similar to the old air ride sytem on the W100 an W109 as far as height control.
Now I would like to clear something up in my last post I just seen that is in error. Because of this system you must set the ready to drive height with the leveling valves. When you lower the car with the leveling valves it will go all the way down. To set height have someone measure the car as it stills on flat ground front and rear. Once the height is to spec center the valve and linkage like I described before. Sorry for the confusion.