Car Problem Reports

Mercedes-Benz S55 AMG Active Body Control System Can Leak Hydraulic Fluid

Mercedes-Benz S55 AMG Problem
44 Reports
Me Too

Model Years Affected: 2001, 2002, 2003, 2004, 2005, 2006

Average Mileage: 100,374 mi (10,900 mi - 180,000 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, , 114,000 mi

    Active Body Control light is on and the Steering wheel is so hard to turn. what shoul I do? Please help!!! oh and the Temperature needle went all the way to the top. I even added cooling fluid. Help!!! How much does this thing is going to cost me.

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  • Visitor, , 115,000 mi

    Need new ABC pump.

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  •  Rookie

    I had a power steering fluid seal go bad and the garage that worked on it put power steering fluid in the ABC fluid housing which made the ABC system suck up the power sterring fluid and it caused the whole ABC system to go bad. mercedes fixed it, but it was $3000 to flush the system and buy a new pump.

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  •  Rookie

    starting to notice regular ABC visit workshop messages. I keep my eyes on the Hydraulic fluid levels to ensure that the system doesn't run dry. Now car won't raise or lower, also noticing continuous drip underneath the car. Seems to be occuring in the front, near pulley but can't tell due to the frame. I can see fluid dripping from the bottom of what looks like the tandem pump, but could be coming from a high pressure hose connected to it, can't tell. Starting to prepare for a huge repair bill.

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  • Visitor, , 80,000 mi

    My Abc pump is leaking from front seal. I disassembled the pump and i see that i must change the seal (28x40x7.6) and two or-ings.

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  • Visitor, , 86,500 mi

    ABC,,,,leaks fluid

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  • Visitor, , 48,000 mi

    Has multiple leaks from some of the hoses located on the driver side

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  • Visitor, , 65,000 mi

    Replaced the hydraulic pump

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  • Visitor, , 125,000 mi

    out of no where, fluid was pouring out under the car and after i popped the hood, saw all this fluid spitting out of the ABC housing/cap area. I'm scared of what this is going to cost. Had no warning or issues with the suspension prior.

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  • Visitor, , 86,000 mi

    car dfoesnt raise

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