The active body control system can leak fluid from numerous areas, including the tandem pump, hydraulic lines, struts, and/or seals. If it is not repaired, the vehicle ride height could drop too low and cause damage to the undercarriage.Google+
Car Problem Reports
Mercedes-Benz S500 Active Body Control System Can Leak Hydraulic Fluid
Mercedes-Benz S500 Problem
Average Mileage: 111,240 mi (10,800 mi - 189,000 mi)
The car is too low to drive.
Visitor, 2001 Mercedes-Benz S500, 10,800 mi
my hydraulic is leaking