🏷️ Basic Information Identification Make: Mercedes-Benz Model: S-Class Model Code: W221 Year: 2011 Generation Generation Code: W221 Generation Years: 2005-2013 👋 Introduction Market Position Segment: Full-Size Luxury Sedan Brand Perception: Flagship Luxury, Engineering Excellence Competitive Analysis Key Competitors: BMW 7 Series, Audi A8, Lexus LS, Porsche Panamera Key Features Design Language: Elegant and Sophisticated Styling Technology Integration: Advanced Driver Assistance Systems, Sophisticated Infotainment Powertrain Options: Powerful and Refined V6, V8, and V12 Engines Ride Comfort: Exceptional Ride Quality with AIRMATIC/ABC Suspension 📋 Manual Details Coverage Areas All Models: True Repair Scope: A-Z Page Count Estimated Page Count: 1000+ Manual Type Type: Service and Repair Manual Source Professional: Dealership Technician Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: All Engine Variants (e.g., M273 V8, M272 V6, OM642 Diesel) Transmission: Automatic Transmission (7G-TRONIC PLUS) Drivetrain: All-Wheel Drive (4MATIC) and Rear-Wheel Drive Suspension: AIRMATIC Air Suspension, Active Body Control (ABC) Brakes: Brake System (ABS, BAS, SBC), Parking Brake Steering: Power Steering System Electrical: Complete Electrical System, Wiring Diagrams, Control Modules (ECU, TCU, SAMs) Body: Body & Chassis, Exterior & Interior Trim, Doors, Windows, Roof Climate Control: THERMATIC/THERMOTRONIC Automatic Climate Control Infotainment: COMAND APS, Audio Systems, Navigation Safety Systems: Airbag System, Seat Belts, PRE-SAFE Driver Assistance: Distronic Plus, Lane Keeping Assist, Blind Spot Assist Procedures Included Maintenance: Scheduled Maintenance (A, B, C Service), Oil Changes, Filter Replacements, Spark Plugs Troubleshooting: Diagnostic Procedures, Fault Code Interpretation, System Malfunctions Repair: Component Removal & Installation, Overhaul Procedures, Adjustments Diagnostics: Scan Tool Procedures, Sensor Testing, Actuator Testing, CAN Bus Diagnostics Wiring: Reading and Interpreting Wiring Diagrams, Troubleshooting Electrical Circuits Specification Updates: Technical Data, Torque Specifications, Fluid Capacities, Alignment Specs Technical Depth Depth: Complete Vehicle Repair and Overhaul Detail Level: Component-Level Diagnostics and Repair Advanced Topics: ECU Programming, Calibration Procedures, Active Suspension System Servicing 📊 Manual Specifications File Format Format: PDF Searchability: Fully Searchable Text Print Quality Resolution: High-Resolution (suitable for printing) Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code Example: M273.968 (4.7L V8) Displacement Example: 4663 cc Configuration Example: 4.7L V8 (Naturally Aspirated) Performance Horsepower Example: 382 hp @ 6000 rpm Torque Example: 391 lb-ft @ 2800-4000 rpm Fuel System Fuel Type: Premium Unleaded Gasoline Injection System: Electronic Fuel Injection (EFI) Engine Management ECM Type: ME-SFI (Motronic) 🔧 Transmission Standard Transmission Type: 7-Speed Automatic (7G-TRONIC PLUS) Optional AWD Option: 4MATIC All-Wheel Drive Features Modes: Comfort (C), Sport (S), Manual (M) Fluid Specification Fluid Type: MB 236.14 (e.g., Shell Spirax S6 ATF ZM) 📐 Dimensions Exterior Length: 206.5 inches Width: 73.7 inches Height: 57.1 inches Weights Curb Weight Example: 4400-4700 lbs (Varies by model) Gross Vehicle Weight Rating Example: 5800-6100 lbs 🛡️ Safety Features Ratings NHTSA Rating Example: 5-Star Overall Safety Rating (for many variants) Active Features ABS: Standard Anti-lock Braking System Esp: Electronic Stability Program (ESP) Pre Safe: PRE-SAFE® anticipatory occupant protection system Passive Features Airbags: Front, Side, Curtain, Knee Airbags Seat Belts: 3-point inertia-reel seat belts with belt tensioners and force limiters 💡 Technology Features Infotainment System Name: COMAND APS (Cockpit Management and Navigation) Features: GPS Navigation, CD/DVD Changer, Bluetooth, Voice Control Driver Assistance Adaptive Cruise Control: DISTRONIC PLUS (Optional) Lane Keeping: LANE KEEPING ASSIST (Optional) Blind Spot Monitoring: BLIND SPOT ASSIST (Optional) Connectivity Bluetooth Audio: Streaming Audio and Hands-Free Calling Comfort Features Massage Seats: Optional multi-contour front seats with massage function Lighting Headlights: Bi-Xenon Headlights with LED Daytime Running Lights 🔧 Maintenance Service Intervals Service A Interval: Approx. 10,000 miles or 12 months Service B Interval: Approx. 20,000 miles or 24 months (following Service A) Fluid Specifications Engine Oil Type Example: Mobil 1 ESP Formula 0W-40 (MB 229.51 Approved) Coolant Type: Mercedes-Benz Approved Antifreeze/Coolant (e.g., MB 325.0 or 326.0) Brake Fluid Type: DOT 4 PLUS (e.g., MB 331.0) Known Issues Air Suspension Common Failure: AIRMATIC compressor failure, strut leaks (especially in older units) Oil Cooler Leaks: Common on V8 engines (M273) due to seal degradation Transmission Conductive Plate: Failure of the electronic conductor plate in the 7G-TRONIC can cause shifting issues Cabin Air Filter Replacement: Requires dashboard removal for some models, detailed in manual Filter Part Numbers Oil Filter Example: A2721840025 Cabin Filter Example: A2218300818 📚 Vehicle History Brand Heritage Brand Legacy: Pioneer in Automotive Safety and Luxury Model Evolution S Class Legacy: Long history of innovation dating back to the original S-Class models. W221 Introduction: Introduced as a redesign for the 2006 model year, with significant updates for 2010. Production Manufacturing Location: Sindelfingen, Germany 🏆 Awards & Recognition Recognitions IIHS Top Safety Pick Year: 2011 (for many configurations) Ratings Consumer Reports Rating: Generally Highly Rated for Comfort and Features (though reliability varies)