🏷️ Basic Information Identification Make: Mercedes-Benz Model: S550 Year: 2010 Codes Chassis Code: W221 👋 Introduction Market Position Market Segment: Full-size Luxury Sedan Competitive Analysis Primary Competitors: BMW 7 Series, Audi A8, Lexus LS, Porsche Panamera, Jaguar XJ Key Features Luxury Appointments: Premium materials, advanced comfort features, sophisticated design Advanced Technology: State-of-the-art infotainment, driver assistance systems, sophisticated chassis control 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Diagnostics, Troubleshooting, Maintenance Page Count Estimated Page Count: Comprehensive (Software-based, no fixed page count) Manual Type Type: Official Service and Repair Manual Software Language Language: English Format Format: Software/Digital (likely PDF or proprietary viewer) 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed overhaul procedures, component specifications, timing, valve adjustments Engine Management: Fuel injection, ignition timing, emissions control, sensor diagnostics Transmission: Automatic transmission (722.9 '7G-TRONIC'), removal, installation, fluid service, component repair Drivetrain: Front and rear axle, driveshafts, differentials, lubrication Suspension: Active Body Control (ABC), air suspension, component replacement, calibration Brakes: Hydraulic system, ABS, ESP, SBC (if applicable, though less likely for 2010 S550), brake pad/rotor replacement, bleeding procedures Steering: Power steering system, steering column, alignment specifications Electrical System: Battery, charging system, starter, lighting, power distribution Body And Chassis: Body panel removal/installation, doors, glass, seals, structural components HVAC: Climate control system, refrigerant handling, component diagnosis Infotainment: COMAND system, navigation, audio, telematics (diagnosis and troubleshooting) Safety Systems: Airbag system (SRS), seatbelt pre-tensioners, sensor diagnostics Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, spark plug replacement Diagnostic Troubleshooting: Fault code interpretation, component testing, wiring diagrams Component Replacement: Detailed step-by-step guides for major and minor component replacement Rebuilding Procedures: Engine, transmission, and other major component rebuilding instructions Calibration Procedures: Suspension, steering angle sensor, and other system calibrations Technical Depth Depth: Comprehensive: Covers from basic fluid changes to complete engine and transmission overhauls, including advanced electrical diagnostics. 📊 Manual Specifications File Format Digital Format: Software/proprietary format, likely with searchability and interactive diagrams. Print Quality Print Quality Expectation: N/A (Digital Format) Binding Type Binding Type Expectation: N/A (Digital Format) Paper Type Paper Type Expectation: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: M273 Engine Type: 4.7L V8 (Naturally Aspirated) Displacement: 4663 cc Performance Horsepower: 382 hp @ 6000 rpm Torque: 391 lb-ft @ 2800-4000 rpm Fuel System Fuel Delivery: Electronic fuel injection (Bosch ME 9.7 ECU) Fuel Type: Premium Unleaded Gasoline (91+ octane recommended) Engine Management Emission Control: California/Federal emissions standards compliant 🔧 Transmission Standard Transmission Type: 7-speed Automatic (722.9 '7G-TRONIC') Optional Optional Transmission: N/A for S550 model Features Transmission Modes: Comfort (C), Sport (S), Manual (M) Fluid Specifications Transmission Fluid Type: MB 236.14 (e.g., Mobil ATF 134, Fuchs Titan ATF 4134) 📐 Dimensions Exterior Length: 205.5 inches (5220 mm) Width: 73.7 inches (1872 mm) Height: 58.2 inches (1478 mm) Wheelbase: 124.6 inches (3165 mm) Weights Curb Weight: 4,600-4,700 lbs (approx.) 🛡️ Safety Features Ratings NHTSA Front Crash Test Rating: 5-Star (Driver and Passenger) IIHS Top Safety Pick: Yes Active Features Active Safety Suite: ABS, ESP (Electronic Stability Program), BAS (Brake Assist), PRE-SAFE® Driver Assistance Systems: Optional: DISTRONIC PLUS (Adaptive Cruise Control), PARKTRONIC (Parking Assist), LANE KEEPING ASSIST, BLIND SPOT ASSIST Passive Features Airbags: Front, side, curtain, knee airbags Seatbelts: Pre-tensioners, force limiters 💡 Technology Features Infotainment Infotainment System: COMAND APS (Cockpit Management and Navigation) Display Size: 8-inch color display Features: Navigation, AM/FM/HD Radio, CD/DVD player, SD card slot, USB/Aux input, Bluetooth connectivity. Driver Assistance Standard Driver Assistance: PRE-SAFE® system Optional Driver Assistance Packages: Driver Assistance Package (DISTRONIC PLUS, BAS PLUS, PRE-SAFE® Brake), Lane Keeping Package (Lane Keeping Assist, Blind Spot Assist) Connectivity Connectivity Options: Bluetooth for hands-free calling and audio streaming. Lighting Headlights: Bi-Xenon Adaptive Headlights with LED Daytime Running Lamps 🔧 Maintenance Service Intervals Oil Change Interval: Flexible Service System (FSS) - typically every 10,000 miles or 1 year, depending on driving conditions and oil life monitor. Major Service Interval: Refer to FSS for A and B service intervals, which may include spark plugs, brake fluid, and other component checks. Fluid Specifications Engine Oil Type: MB 229.5 (e.g., Mobil 1 0W-40, Castrol Edge 0W-40) Engine Oil Capacity: 8.5 liters (approx.) Coolant Type: MB 325.0 / 326.0 (Antifreeze/Coolant concentrate) Brake Fluid Type: DOT 4 Plus (e.g., MB Brake Fluid A0009890807) Known Issues Common Wear Items: Air suspension struts/lines, ABC hydraulic fluid leaks, ignition coils, catalytic converters. Electrical Gremlins: Can be prone to various minor electrical issues due to complex systems; often requires STAR diagnostic tool for accurate troubleshooting. Filter Part Numbers Oil Filter Part Number: A2731840125 (example, consult dealer for VIN-specific parts) 📚 Vehicle History Brand Heritage Brand Legacy: Mercedes-Benz has a long-standing reputation for luxury, engineering, and safety dating back to the invention of the automobile. Model Evolution W221 Generation Introduction: The W221 S-Class generation was introduced in 2005 for the 2006 model year, replacing the W220. The 2010 model...