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.
Car problem reports
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Most reported 2004 Mercedes-Benz CL55 AMG problems
A door control module/actuator may fail. Our technicians recommend finding an expert to repair them. Taking the door trim panels off requires expert knowledge because they can break and the pieces are very expensive.
The side window glass can delaminate. If this were to occur, replacement of the affected window would be necessary.
The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.
CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.
An engine Oil leak may develop from the PCV vent housing on the valve cover and/or the inspection plate on the front of the engine.
The center console armrest can break. Replacement is commonly the recommended repair.
The rubber bond in the harmonic balancer can decay, which causes the balancer to move and work its way toward the timing cover. If the balancer comes into contact with the timing cover while the engine is running, it will fracture and damage the cover and potentially other surrounding parts. The harmonic balancer should be inspected at every service.