🏷️ Basic Information Identification Make: Mercedes-Benz Model: S-Class Chassis Code: W221 Model Year: 2014 Generation Generation Code: W221 (Facelift 2) Production Years: 2005-2013 Facelift Introduction: 2009 👋 Introduction Market Position Segment: Full-size Luxury Sedan Target Audience: Affluent consumers seeking comfort, performance, and advanced technology Competitive Analysis Primary Competitors: BMW 7 Series, Audi A8, Lexus LS, Porsche Panamera Key Features Design Philosophy: Elegant, stately design emphasizing comfort and sophisticated road presence. Interior Appointments: Opulent cabin with premium materials, advanced climate control, and extensive customization options. Technological Advancements: Introduction of driver assistance systems, advanced infotainment (COMAND), and sophisticated suspension technologies. 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Workshop Manual Language: English Format: PDF Download Page Count Estimated Page Count: Extensive (typically 3000+ pages for full W221 coverage) Accessibility Licensing: Perpetual Download, No Expiry Dates Delivery Method: Instant Download to Computer/Tablet 📖 Manual Coverage Systems Covered Powertrain: Engine mechanicals, engine management, fuel system, exhaust system, cooling system, lubrication system Drivetrain: Transmission (7G-TRONIC PLUS), driveshafts, differentials, axles, AWD (4MATIC) Chassis: Suspension (AIRMATIC, Active Body Control), steering, brakes (including SBC/ABS/ESP), wheels, tires Electrical: Body control modules (BCM), CAN bus communication, lighting systems, instrument cluster, comfort electronics, power accessories HVAC: Automatic climate control, A/C system diagnosis and repair Body: Body panels, doors, windows, interior trim, convertible top (if applicable to specific W221 variants), bumpers Infotainment: COMAND APS, audio systems, navigation, telematics Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, brake service, battery maintenance Diagnostics: Troubleshooting guides, fault code interpretation, component testing, wiring diagrams, diagnostic flowcharts Repair: Component removal and installation, engine rebuilds, transmission overhaul, suspension repair, brake caliper replacement, electrical component repair Adjustment: Wheel alignment, door/hood alignment, headlamp aiming Special Tools: Identification and usage of specialized Mercedes-Benz tools Technical Depth Depth: Comprehensive Factory Level - Covers everything from routine maintenance to complete engine and transmission overhauls, including detailed diagnostic procedures and electrical schematics. 📊 Manual Specifications File Format File Type: Adobe PDF Searchability: Text-searchable for quick information retrieval Print Quality: High-resolution, printable pages Binding Type Binding Type: N/A (Digital Download - PDF) Paper Type Paper Type: N/A (Digital Download - PDF) ⚙️ Engine Specifications Primary Engine Engine Code 2014 Usdm: M278 (4.7L Bi-Turbo V8), M157 (5.5L Bi-Turbo V8 AMG), M279 (6.0L Bi-Turbo V12 AMG), M276 (3.5L V6 Bi-Turbo - later models/variants) Performance S550 4Matic Horsepower: 449 hp @ 5,250 rpm (M278) S550 4Matic Torque: 516 lb-ft @ 1,800-3,500 rpm (M278) S63 Amg Horsepower: 536 hp @ 5,250 rpm (M157) S63 Amg Torque: 590 lb-ft @ 2,000-4,500 rpm (M157) S65 Amg Horsepower: 621 hp @ 4,800-5,400 rpm (M279) S65 Amg Torque: 738 lb-ft @ 2,300-4,300 rpm (M279) Fuel System Injection Type: Direct Injection (DI) for M278 and M157, Sequential MPI for M279 Fuel Grade Recommendation: Premium Unleaded (91 octane or higher recommended) Emission Controls Emission Standards: Meets or exceeds EPA emission standards for the model year. 🔧 Transmission Standard Transmission Type: 7G-TRONIC PLUS Automatic (7-speed) Optional All Wheel Drive: 4MATIC All-Wheel Drive (Optional on S550) Features Transmission Modes: Comfort (C), Sport (S), Manual (M) Transmission Fluid Spec: MB Spec 236.14 (or equivalent approved fluid) Gear Ratios 7G Tronic Plus Final Drive: Typically 3.06:1 (for RWD variants) 📐 Dimensions Exterior Wheelbase: 124.6 inches (3,165 mm) Overall Length: 206.5 inches (5,247 mm) Overall Width: 73.7 inches (1,872 mm) Overall Height: 58.0 inches (1,473 mm) Weights Curb Weight S550 4Matic: Approximately 4,600 - 4,800 lbs (2,087 - 2,177 kg) Gross Vehicle Weight Rating: Varies by model and configuration, typically around 6,000 - 6,300 lbs Towing Capacity: Not specified/recommended for towing by Mercedes-Benz Wheels Tires Standard Wheel Size: 18-inch or 19-inch alloy wheels Standard Tire Size: 235/50R18 or 255/40R19 (Front), 275/40R19 (Rear) for 4MATIC Bolt Pattern: 5 x 112mm Center Bore: 66.6 mm 🛡️ Safety Features Ratings NHTSA Front Crash Rating: 5-Star (for applicable models and configurations) IIHS Top Safety Pick: Often recognized as Top Safety Pick or similar awards for its class. Active Features ABS: Anti-lock Braking System (with Brake Assist) Esp: Electronic Stability Program (ESP) Driver Assistance Suite: Adaptive Cruise Control (DISTRONIC PLUS), Lane Keeping Assist, Blind Spot Assist, Pre-Safe Brake, Night View Assist Plus Passive Features Airbags: Front airbags, front side airbags, rear side airbags, curtain airbags, front pelvic airbags, knee airbags (driver and passenger) Seatbelts: 3-point inertia-reel seatbelts with PRE-SAFE® belt tensioners and force limiters Child Seat Anchors: ISOFIX/LATCH child seat anchoring system 💡 Technology Features Infotainment Infotainment System: COMAND APS (Cockpit Management and Navigation System) with 7-inch color display Audio System: Harman Kardon Logic 7 surround sound system (optional, standard on AMG models) Connectivity: Bluetooth interface for hands-free calling and audio streaming, USB and AUX inputs Driver Assistance Adaptive Cruise Control: DISTRONIC PLUS with proximity warning and automatic braking Lane Keeping Assist: Active Lane Keeping Assist (with steering intervention) Blind Spot Monitoring: Active Blind Spot Assist Parking Assistance:...