Mercedes-Benz SL550 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Mercedes-Benz SL550
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Mercedes-Benz SL550 ProblemsActive Body Control System Can Leak Hydraulic Fluid
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.
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.
Mercedes-Benz SL550 QuestionsTruck will not open automatically only opens with the mechanical key (1 answer)
I opened it once using the inside button but now it is locked and will only open with the mechanical key not with the smart key or the inside button.
How do I get it to stay unlocked so the remotes will work?
Mercedes-Benz SL550 RecallsPower Steering Assistance Fails
The electric power steering system may have improperly soldered contacts inside the control unit. This could result in the power assist failing while driving. Dealers will replace the electric power steering control unit free of charge to resolve the concern.
The headlights may not be aimed properly. Dealers will inspect and if necessary adjust the headlamp assemblies free of charge to resolve the concern.
In a crash that deploys vehicle air bags to protect occupants, the passenger seat air bag may not deploy, increasing risk of injury. Dealers will replace the passenger seat air bag free of charge to resolve the problem.