Segment:
Luxury Grand Tourer Convertible
Target Audience:
Owners seeking detailed DIY repair information, independent repair shops specializing in European vehicles, and Mercedes-Benz enthusiasts.
Competitors 2011:
BMW 6 Series Convertible, Porsche 911 Carrera Cabriolet, Jaguar XK Convertible, Audi A5 Cabriolet.
Vehicle Highlights:
Retractable hardtop, Active Body Control (ABC) suspension, powerful V8 engine, luxurious interior, advanced safety features.
Manual Advantage:
Official factory data ensures accuracy and completeness, covering all aspects of vehicle maintenance and repair, unlike generic aftermarket guides.
Coverage Scope:
Comprehensive
Systems Covered List:
Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Bodywork, Interior, Convertible Top System, Diagnostic Procedures, Troubleshooting
Type:
Official Factory Service Manual / Repair Manual Software
Format:
Software (Digital Download)
Powertrain:
Detailed diagnostics and repair procedures for the M273 V8 engine, 7G-TRONIC automatic transmission, and rear-wheel drive system.
Chassis:
In-depth coverage of the ABC (Active Body Control) suspension system, hydraulic power steering, and braking system components (ABS, ESP, SBC where applicable).
Electrical And Electronics:
Extensive wiring diagrams, module diagnostics, CAN bus communication, lighting systems, COMAND infotainment system, and comfort electronics.
Convertible Top:
Complete troubleshooting and repair procedures for the electro-hydraulic retractable hardtop, including hydraulic systems, actuators, and sensors.
Maintenance:
Scheduled maintenance tasks, fluid changes, filter replacements, inspections, and lubrication points.
Diagnostics:
Step-by-step diagnostic flowcharts, fault code interpretation (OBD-II), and troubleshooting guides for common and complex issues.
Repair And Rebuild:
Detailed instructions for component removal, installation, and overhaul, including engine mechanicals, transmission overhaul, suspension component replacement, and body panel repair.
Special Tools:
Identification and usage guidelines for specialized Mercedes-Benz diagnostic and repair tools.
Depth:
Factory-level detail, suitable for professional technicians and advanced DIY enthusiasts. Includes torque specifications, component tolerances, and detailed electrical schematics.
Displacement:
5.5 Liters (5461 cc)
Bore X Stroke:
98.0 mm x 90.5 mm
Compression Ratio:
10.7:1
Valvetrain:
SOHC, 4 Valves per Cylinder with Variable Valve Timing (VVT)
Horsepower Hp:
382 hp @ 6000 rpm
Torque Lb Ft:
391 lb-ft @ 2800-4800 rpm
Fuel Type:
Premium Unleaded Gasoline (91+ Octane)
Injection System:
Sequential Multi-Port Fuel Injection (MPI)
Fuel Pump Pressure:
4.0 bar (58 psi)
Oil Capacity Quarts:
8.5 quarts (8.0 liters) with filter
NHTSA Overall Rating:
Not explicitly rated by NHTSA for this specific model year in a comparable format to modern vehicles. Relies on internal Mercedes-Benz testing and standards.
Electronic Stability Program:
ESP (Electronic Stability Program)
Anti Lock Braking System:
ABS (Anti-lock Braking System)
Brake Assist System:
BAS (Brake Assist System)
Active Suspension:
ABC (Active Body Control)
Airbags:
Front dual-stage airbags, side airbags, head airbags (pelvis/thorax), and pop-up roll bars.
Seatbelts:
Pretensioning seatbelts with force limiters, Active Body Restraint System (ABRS) with seatbelt extenders.
Primary System:
COMAND APS (Cockpit Management and Navigation)
Features:
Navigation, AM/FM/Weather Band radio, CD/DVD player, Harman Kardon LOGIC 7 surround sound system, Bluetooth connectivity, auxiliary audio input.
Adaptive Cruise Control:
DISTRONIC PLUS (optional feature)
Parking Assistance:
Front and rear PARKTRONIC parking sensors.
Bluetooth:
Integrated Bluetooth for hands-free calling and audio streaming.
Keyless Entry Start:
KEYLESS-GO
Climate Control:
THERMOTRONIC automatic climate control with dual-zone functionality.
Oil Change Interval:
Every 10,000 miles or 12 months, whichever comes first, using synthetic oil meeting MB 229.5.
Major Service A:
Typically around 10,000-15,000 miles: Includes oil and filter change, multi-point inspection, tire rotation, and checks of fluids and belts.
Major Service B:
Typically around 20,000-30,000 miles: Includes Service A items plus cabin air filter replacement, brake fluid flush (every 2 years), and more comprehensive inspections.
Coolant Type:
MB 325.0 / 326.0 (Concentrate, mix 50/50 with distilled water)
Brake Fluid Type:
DOT 4 Plus (MB Spec 331.0)
Power Steering Fluid:
MB 236.3
Common Faults Abc Suspension:
Leaking ABC hydraulic lines, faulty ABC accumulators, worn ABC strut spheres, pump failures. The manual provides diagnostic procedures for these critical components.
Common Faults Convertible Top:
Hydraulic leaks in the top system, malfunctioning roll bar actuators, sensor failures affecting top operation. Repair procedures are detailed in the manual.
Common Faults Electronics:
Various sensor failures (e.g., ABS sensors), COMAND system glitches, EIS (Electronic Ignition Switch) issues. Wiring diagrams and diagnostic trees are essential for resolution.
Common Faults Engine M273:
Timing chain tensioner wear (though less prevalent than earlier M272 engines), cam adjusters, and occasional intake manifold runner issues.
Mercedes Benz Legacy:
Founded on automotive innovation, Mercedes-Benz has a long history of producing luxury vehicles, performance cars, and pioneering safety technologies.
R230 Generation Details:
The R230 SL-Class debuted for the 2003 model year, evolving through facelifts and powertrain updates. The 2011 model represents the later stage of the R230 generation, featuring updated styling and technology.
Manufacturing Location:
Bremen, Germany
Award Category Influence:
While specific awards for the 2011 SL550 might be limited, the SL-Class generally received accolades for its blend of performance, comfort, and technological innovation in the luxury convertible segment.
Reliability Perception:
Historically, Mercedes-Benz vehicles are perceived as high-quality, though complex systems like ABC can sometimes present maintenance challenges, making a comprehensive manual invaluable.
Manual Certification:
Officially Licensed Service and Repair Manual Software
