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 CL55 AMG Active Body Control System Can Leak Hydraulic Fluid
Mercedes-Benz CL55 AMG Problem
Average Mileage: 79,560 mi (65,000 mi - 112,000 mi)
Visitor, 2003 Mercedes-Benz CL55 AMG, 72,000 mi
Was told abc was leaking seen the abc notification turn on a few times, but now the esp malfunction comes on. car has a horrible squeak in the front drivers side where I was told was leaking. Looking for possible answers so I can fix it. First time Mercedes owner
Visitor, 2005 Mercedes-Benz CL55 AMG, 112,000 mi
the car will be low on one side or drop down very low on the front and back right side. Hose,senors,struts were replaced several times however, I continue to have the problem.
rides too high, rides too low, one side is higher than the other, front is higher than the back, and back is higher than the front. All of these aply, i was told it's the pump but was also told to try flushing the abc system.