🏷️ Basic Information Identification Make: Mercedes-Benz Model: S550 Year: 2011 Vehicle Chassis Code: W221 Product Type: Service & Repair Manual Software 👋 Introduction Market Position Market Position: Flagship luxury sedan, representing the pinnacle of Mercedes-Benz engineering and comfort. Competitive Analysis Competitive Analysis: Competes directly with other ultra-luxury sedans such as the BMW 7 Series, Audi A8, Lexus LS, and Porsche Panamera. Key Features Key Features: Advanced suspension systems (ABC/AIRMATIC), powerful V8 engine, extensive safety features, luxurious interior appointments, cutting-edge technology, and refined ride quality. 📋 Manual Details Coverage Areas Coverage Areas: Full Service & Repair Coverage Page Count Page Count: Extensive (Digital Software) Manual Type Manual Type: Official Diagnostic & Repair Manual Manual Version: Official Factory Service Manual (FSM) equivalent Language Language: English Format Format: Software (Digital Download/Online Access) 📖 Manual Coverage Systems Covered Systems Covered: Engine Mechanical, Engine Control (ECU), Fuel System, Ignition System, Cooling System, Lubrication System, Exhaust System, Transmission (7G-TRONIC), Drivetrain (4MATIC All-Wheel Drive), Suspension (ABC - Active Body Control, AIRMATIC), Steering System, Brake System (ABS, ESP), Electrical System (12V, CAN Bus), Climate Control, Air Conditioning, Body & Chassis, Interior Systems, Exterior Lighting, Safety Systems (Airbags, Seatbelts), ADAPTIVE BRAKE with HOLD function, Lighting systems, CAN gateway, diagnostics, wiring diagrams Procedures Included Procedures Included: Scheduled maintenance, routine inspections, detailed troubleshooting procedures, step-by-step repair instructions, component removal and installation, diagnostic fault code (DTC) interpretation and resolution, wiring diagram analysis, fluid level checks and changes, filter replacements, brake caliper service, suspension component replacement, engine timing, torque specifications, reset procedures, software updates (if applicable to diagnostic tools), component testing and calibration Technical Depth Technical Depth: Comprehensive from basic maintenance to advanced diagnostics and complete component overhauls, including electrical system schematics and troubleshooting trees. Diagnostic Tools Diagnostic Tools Compatibility: Designed to be used in conjunction with Mercedes-Benz diagnostic tools such as XENTRY/DAS (Diagnostic Assistance System), offering detailed diagnostic information and repair procedures. Body And Chassis Body And Chassis Coverage: Detailed information on body construction, door mechanisms, hood and trunk operation, body panel alignment, rust prevention, and corrosion protection. Electrical System Electrical System Coverage: Extensive coverage of the 12V electrical system, including battery management, alternator, starter motor, fuses, relays, CAN bus communication network, multiplexed systems, and troubleshooting of electrical faults. 📊 Manual Specifications File Format File Format: Proprietary Mercedes-Benz diagnostic software format (e.g., XENTRY/WIS based) Print Quality Print Quality: N/A (Digital) Binding Type Binding Type: N/A (Digital) Paper Type Paper Type: N/A (Digital) Searchability Searchability: Fully searchable text for quick access to specific information, diagrams, and procedures. ⚙️ Engine Specifications Primary Engine Engine Code: M273 Engine Type: Naturally Aspirated V8 Displacement: 5.5 Liters (5461 cc) Bore X Stroke: 98.0 mm x 90.5 mm Compression Ratio: 10.7:1 Performance Horsepower: 382 hp @ 6000 rpm Torque: 391 lb-ft @ 2800-4800 rpm Acceleration 0 60 Mph: Approximately 5.4 seconds (RWD), 5.3 seconds (4MATIC) Fuel System Fuel Delivery: Electronic Fuel Injection (Bosch MED 17.7) Fuel Type: Premium Unleaded Gasoline (91+ octane) Engine Management Engine Control Unit: Bosch MED 17.7 Engine Sensors: Includes troubleshooting for crankshaft position sensor, camshaft position sensors, mass air flow (MAF) sensor, oxygen sensors (O2), temperature sensors, knock sensors. Cooling System Coolant Type: Mercedes-Benz Specification 325.0 (Glysantin G48 equivalent) Lubrication System Oil Type: Mobil 1 Synthetic ESP Formula 0W-40 (MB 229.51 Specification) 🔧 Transmission Standard Transmission Type: 7-Speed Automatic (7G-TRONIC) Transmission Fluid Type: MB 236.14 Specification Optional Drivetrain Options: 4MATIC All-Wheel Drive Features Transmission Features: Driver-adaptive shifting, manual mode with steering wheel shift buttons, Comfort (C) and Sport (S) modes. 📐 Dimensions Exterior Length: 200.9 inches (5103 mm) Width: 73.7 inches (1872 mm) Height: 59.3 inches (1506 mm) Wheelbase: 118.7 inches (3015 mm) Weights Curb Weight: 4431-4564 lbs (2010-2070 kg) Gross Vehicle Weight Rating: 5644 lbs (2560 kg) Interior Front Headroom: 38.3 inches Rear Headroom: 39.5 inches Front Legroom: 41.7 inches Rear Legroom: 43.7 inches 🛡️ Safety Features Ratings NHTSA Front Crash Test Rating: 5-Star IIHS Top Safety Pick: Yes Active Features Active Safety Features: ADAPTIVE BRAKE with HILL START ASSIST, Electronic Stability Program (ESP), Anti-lock Braking System (ABS), Brake Assist (BAS), PRE-SAFE® system, ATTENTION ASSIST, Active Lane Keeping Assist, Active Blind Spot Assist (optional), DISTRONIC PLUS (optional) Adaptive Brake System: Detailed explanation and diagnostic procedures for ADAPTIVE BRAKE with HOLD function, Hill Start Assist, and brake drying features. Passive Features Passive Safety Features: Dual-stage front airbags, front side airbags, front and rear side curtain airbags, front pelvic airbags, Active head restraints, front seatbelt pretensioners with force limiters. 💡 Technology Features Infotainment Infotainment System: COMAND APS (Cockpit Management and Navigation System) with integrated hard-drive navigation, CD/DVD changer, SD card slot, USB interface, and Bluetooth connectivity. Display: 8-inch high-resolution color display. Driver Assistance Driver Assistance Features: DISTRONIC PLUS (Adaptive Cruise Control), PARKTRONIC (Parking Assist), rearview camera, Lane Keeping Assist, Blind Spot Assist, NIGHT VIEW ASSIST (optional). Driver Assistance Features Detail: Includes operation, calibration, and troubleshooting...