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 SL55 AMG Active Body Control System Can Leak Hydraulic Fluid
Mercedes-Benz SL55 AMG Problem
Average Mileage: 56,963 mi (30,000 mi - 100,600 mi)
body on SL55 AMG keeps dropping within two or three hours, need to raise body prior to driving. MB wants $7,0000 to fix the metering valves?
Visitor, 2007 Mercedes-Benz SL55 AMG, 34,000 mi
ABC unit leaking for acumimlater
Visitor, 2004 Mercedes-Benz SL55 AMG, 60,000 mi
Having same problem. Sometimes car levels and sometimes it give messages to"drive carefully " in red
Replacement parts quite expensive
Visitor, 2005 Mercedes-Benz SL55 AMG, 59,000 mi
Left Front tire dropped after 1-2 days of parking. ABC Light comes on and warning said car too low. I hit the raise level then everything goes back to normal until a couple days later. Thinking about taking it back to dealer to get "jacked".
for the past week my SL55 AMG has been dropping approximately 3 inches while stopped at red lights and stop signs...today, I found a lot of fluid under my car, and when I powered on my vehicle, a red ABC light came on along with the warning, "Drive carefully". I'm about to take my vehicle to the shop here in town to determine the cost of repair...I came here looking for a general estimate on the cost. Last time I took my vehicle in for repairs, I was charged $1,500 for what was essentially a fuse replacement... I don't want to get jacked around again.
Visitor, 2004 Mercedes-Benz SL55 AMG, 76,000 mi
tandem suspension pump is bad $2,800 repair...oouch
Visitor, 2006 Mercedes-Benz SL55 AMG, 30,000 mi
oil leak abc