Car Problem Reports

Mercedes-Benz SL550 Active Body Control System Can Leak Hydraulic Fluid

Mercedes-Benz SL550 Problem
18 Reports
Me Too

Model Years Affected: 2007, 2008, 2009

Average Mileage: 51,184 mi (23,000 mi - 85,000 mi)


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.

  • Visitor, , 28,400 mi

    ABC hose broke- $1600 to repair

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  • Visitor, , 56,000 mi

    ABC pump making noise and not covered under warranty. Cost to repair $4400. I'm trading the car in.

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  • Visitor, , 52,000 mi

    Leak and repair cost $2600

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  • Visitor, , 46,000 mi

    Suspension hydraulic pump replacement - $4,000

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  • Visitor, , 38,000 mi

    My car started bouncing as I was driving down the road and the ABC red warning light came on. I looked it up in manual and it
    said to pull over and not drive. Had to have car towed into dealership and lucky for me, it was covered under warranty. The ABC system had failed!

    A year later, there was a leak in the hydraulic system and it was also covered under warranty.

    I now have 64,000 miles and took in for scheduled service and the ABC pulsation damper needs replacing ($1143).
    The car makes a whirling sound and it also makes a knocking noise when slowing down?

    Very disappointed.

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  • Visitor, , 66,500 mi

    ABC Malfunction warning on. Fluid leak visible under vehicle. Steering is impossibly hard.

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  • Visitor, , 85,000 mi

    leak in pressure hose. Install new hose& fluid $700

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  • Visitor, , 28,000 mi

    Leaking fluid and car ABC maintenance went on to stop car and take to mbz repair.

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  • I have a 2009 SL550 and have just taken it in for this same problem. Glad to have read this report. The Service Dept is keeping my car another day to make sure it has no other leaks.

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