🏷️ Basic Information Identification Make: Mercedes-Benz Model: S-Class Chassis Code: W221 Product Name: Mercedes Benz S-Class W221 Complete Workshop Service Repair Manual 2006-2014 Generation Model Generation: Fifth Generation (W221) Production Years Covered: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 👋 Introduction Market Position Segment: Full-size Luxury Sedan Competitors: BMW 7 Series, Audi A8, Lexus LS, Porsche Panamera Key Features Design Philosophy: Elegance, advanced technology, comfort, safety Technological Advancements: PRE-SAFE®, DISTRONIC PLUS®, AIRMATIC®, COMAND APS 📋 Manual Details Coverage Areas Primary Coverage: North America, Europe, Asia Language: English Page Count Estimated Page Count: Thousands (Exact count varies by specific publication, but highly comprehensive) Manual Type Manual Type: Workshop Service and Repair Manual Format Digital Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: All gasoline and diesel variants including M272, M273, M275, M156, OM642, OM645, etc. Transmission: 7-speed automatic (7G-TRONIC), 9-speed automatic (9G-TRONIC applicable to later years) Drivetrain: Rear-wheel drive (RWD), All-wheel drive (4MATIC) Suspension: AIRMATIC (Adaptive Damping System), ABC (Active Body Control) Brakes: ABS, ESP, SBC (Sensotronic Brake Control where applicable), disc brake systems, parking brake Steering: Power steering system, steering column adjustments Electrical System: 12V battery, alternator, starter, lighting systems, fuse box diagrams, wiring schematics Climate Control: Automatic climate control, A/C system, heating system, ventilation Comfort Systems: Power seats, windows, mirrors, sunroof, keyless entry, trunk opener Infotainment And Navigation: COMAND system, audio components, navigation unit, telematics Body And Chassis: Body repair, structural components, doors, panels, bumpers, glass Safety Systems: Airbags, seatbelts, PRE-SAFE system, ABS, ESP Procedures Included Routine Maintenance: Oil and filter changes, fluid checks, spark plug replacement, filter replacements Troubleshooting: Diagnostic procedures, fault code interpretation, common problem solutions Repair Procedures: Component removal and installation, engine rebuilds, transmission overhauls, suspension repairs Diagnostic Tools: Information on using Mercedes-Benz diagnostic tools (e.g., STAR Diagnosis) Electrical Diagnostics: Detailed wiring diagrams, troubleshooting electrical faults Technical Depth Depth Of Coverage: Comprehensive: From basic maintenance to complete engine and transmission rebuilds Diagnostic Level: Advanced diagnostics, including electronic control unit (ECU) functions Repair Detail: Step-by-step repair instructions with torque specifications, special tool requirements, and clearances 📊 Manual Specifications File Format File Format: PDF Searchability: Fully searchable text content Print Quality Print Quality: High-resolution, suitable for printing individual pages or sections Binding Type Binding Type: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Codes Covered: M272 (3.5L V6), M273 (5.5L V8), M156 (6.2L V8 AMG), OM642 (3.0L V6 Diesel), OM645 (3.0L V6 Diesel), M275 (5.5L Bi-Turbo V12) Performance Power Output Range: 228 hp (S350 CDI) to 518 hp (S63 AMG) Torque Output Range: 398 lb-ft (S350 CDI) to 738 lb-ft (S65 AMG - electronically limited) Fuel System Fuel Injection: Direct Injection (GDI) and Port Fuel Injection (PFI) depending on engine variant Fuel Type: Premium Unleaded Gasoline, Diesel (for CDI variants) 🔧 Transmission Standard Transmission Standard: 7-speed automatic (7G-TRONIC) Optional Transmission Optional: 9-speed automatic (9G-TRONIC) introduced in later model years Features Transmission Features: TouchShift, Sport and Comfort modes, manual shifting via paddle shifters (optional) Fluid Specifications Transmission Fluid Type: MB 236.14 (7G-TRONIC), MB 236.16 (9G-TRONIC) 📐 Dimensions Exterior Wheelbase: Approx. 124.6 inches (Standard), 132.1 inches (Long Wheelbase - V221) Length: Approx. 205.0 inches (Standard), 212.5 inches (Long Wheelbase) Width: Approx. 73.7 inches Height: Approx. 58.0 inches Weights Curb Weight Range: Approx. 4,300 lbs to 5,000+ lbs depending on configuration 🛡️ Safety Features Ratings NHTSA Rating: Likely received high ratings (e.g., 5-star) in government crash tests, consistent with Mercedes-Benz safety standards. IIHS Rating: Likely received 'Good' ratings in IIHS crashworthiness tests. Active Features Active Safety Systems: ABS, EBD, Brake Assist (BAS), ESP (Electronic Stability Program), PRE-SAFE® system, DISTRONIC PLUS® (Adaptive Cruise Control), Lane Keeping Assist, Blind Spot Assist Passive Features Passive Safety Features: Multiple airbags (front, side, curtain, knee), active head restraints, crumple zones, reinforced safety cell 💡 Technology Features Infotainment Infotainment System: COMAND APS (Cockpit Management and Navigation) with integrated audio, navigation, and telematics. Display Type: Central LCD display screen Driver Assistance Driver Assistance Suite: Distronic Plus (Adaptive Cruise Control), Pre-Safe Brake, Lane Keeping Assist, Blind Spot Assist, Parking Assist (PARKTRONIC) Connectivity Connectivity Features: Bluetooth connectivity for hands-free calling and audio streaming, optional SiriusXM satellite radio, Tele Aid emergency calling system. 🔧 Maintenance Service Intervals Oil Change Interval: Flexible Service System (FSS) typically around 10,000 miles or 12 months, whichever comes first (may vary by model year and driving conditions). Major Service Interval: Major services, including spark plug replacement and transmission fluid service, typically recommended around 60,000 to 100,000 miles. Fluid Specifications Engine Oil Specification: MB 229.5 (Synthetic) or MB 229.51 (Low SAPS Synthetic) for gasoline engines, MB 229.52 for diesel engines. Viscosity varies (e.g., 0W-40, 5W-40). Coolant Specification: MB 325.0 or MB 326.0 (Glycol-based coolant) Known Issues Common Issues Engine: Timing chain wear on M272/M273 V6/V8 engines, balance shaft issues (M272), ignition coil failures. Common...