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.
Resources for the Repair and Maintenance of your 2009 Mercedes-Benz SL550
2009 Mercedes-Benz SL550
2009 Mercedes-Benz SL550 Problems
Leaks in the pneumatic system will cause problems with the dynamic seats and the trunk and/or door closing assist.
The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light and various drivability issues. Mercedes-Benz has released a service bulletin outlining specific repair instructions depending on fault codes stored.
Due to the size and material used on the brakes of these vehicles, the brakes may start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at the outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).
The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.
2009 Mercedes-Benz SL550 Questions and Answers
I bought the car in March. I only have 2600 miles. How important is this maintenance? What is it?
Where is the oil filter located on the 2009 SL550? How do I get access to it? Yhanks.
Car has black interior so at night it is very dark. Cannot see the floor/feet.
I have change the oile many times with filter and radiator and still the oile get mixed with the water what can i do please my car is SL550 2009