🏷️ Basic Information Identification Make: Mercedes-Benz Model: CLS-Class Model Variant: CLS 550 4MATIC Year: 2012 Codes Chassis Code: C218 Engine Code Group: M278 👋 Introduction Market Position Segment: Full-Size Luxury Coupe (though the CLS is often described as a four-door coupe). Competitive Analysis Key Competitors: Audi A7, BMW 6 Series Gran Coupe, Porsche Panamera, Maserati Ghibli. Key Features Design: Distinctive 'four-door coupe' styling, sweeping roofline, frameless doors, luxurious interior appointments. Powertrain: Powerful V8 biturbo engine, standard 4MATIC all-wheel drive for enhanced traction and stability. Technology: Advanced safety systems, COMAND infotainment, multi-contour seating, ambient lighting. 📋 Manual Details Coverage Areas General Coverage: Driver and Passenger Safety, Instruments and Controls, Comfort and Convenience Features, Operation Tips, Appearance Care, Unexpected Situations, Technical Information, Warranty and Customer Relations, Entertainment Systems, Climate Controls, Lights, Driver Controls, Locks and Security, Seating and Safety Restraints, Driving Advice, Customer Assistance, Safety Defect Reporting (U.S. Specific), Cleaning, Engine Compartment, Engine Oil, Battery, Fuel Information, Air Filter, Part Numbers, Refill Capacities, Lubricant Specifications, Accessories, Service Information, Maintenance Information. Page Count Estimated Page Count: Approximately 300-400 pages (typical for official Mercedes-Benz owner's manuals of this era). Manual Type Type: Owner's Manual Language Language: English Format Format: Digital PDF (Instant Download) 📖 Manual Coverage Systems Covered Powertrain: Engine operation, lubrication, fuel system, cooling system, ignition system, exhaust system, engine break-in procedures. Drivetrain: 4MATIC all-wheel drive system operation, differentials, axle shafts. Chassis And Suspension: Brake system operation, steering system, suspension components, wheel and tire information. Electrical And Electronics: Instrument cluster, lighting systems (interior/exterior), power windows, locks, mirrors, sunroof, wipers, infotainment system, climate control system, basic electrical component identification. Safety And Restraints: Airbag system, seat belts, child seat installation, ISOFIX, LATCH system, Electronic Stability Program (ESP), Traction Control System (TCS). Procedures Included Operation: Starting and driving, parking, using cruise control, operating transmission modes, using parking brake, opening/closing doors and trunk, operating windows and sunroof. Maintenance: Checking fluid levels (engine oil, coolant, brake fluid, windshield washer fluid), tire pressure checks, tire rotation, basic exterior and interior cleaning, engine compartment inspection. Troubleshooting: Understanding warning lights and indicators, what to do in case of a breakdown, jump-starting, changing a flat tire (if equipped with spare/repair kit). Technical Depth Depth: Comprehensive owner-level information covering daily operation, basic maintenance checks, safety features, and system explanations. Does not include detailed diagnostic procedures, component-level repair instructions, or wiring diagrams typically found in a workshop or service manual. 📊 Manual Specifications File Format Digital Format: PDF Print Quality Quality: Official Factory Manual quality, intended for digital viewing and potential printing. Binding Type Binding: Not Applicable (Digital PDF) Paper Type Paper: Not Applicable (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: 4.7L Biturbo V8 Engine Code: M278 DE46 LA Performance Horsepower: 402 hp @ 5,000-5,500 rpm Torque: 443 lb-ft @ 1,800-3,500 rpm Fuel System Fuel Delivery: Direct Injection (BlueDIRECT) Recommended Fuel: Premium Unleaded Gasoline (91 octane or higher) Technical Details Bore X Stroke: 92.0 mm x 87.0 mm Compression Ratio: 10.5:1 Valvetrain: DOHC, 4 valves per cylinder with variable valve timing (CAMTRONIC). 🔧 Transmission Standard Transmission Type: 7-Speed Automatic with TouchShift Transmission Code: 7G-TRONIC PLUS Features Drive Modes: C (Comfort) and S (Sport) modes. All Wheel Drive: 4MATIC Permanent All-Wheel Drive 📐 Dimensions Exterior Length: 193.6 inches (4,919 mm) Width: 73.7 inches (1,872 mm) Height: 56.3 inches (1,430 mm) Wheelbase: 113.1 inches (2,874 mm) Weights Curb Weight: Approximately 4,178 lbs (1,895 kg) Cargo Trunk Capacity: 16.4 cubic feet (464 liters) 🛡️ Safety Features Ratings NHTSA Overall Rating: Not directly rated by NHTSA for this specific model/year in coupe form, but generally expected to perform well based on Mercedes-Benz safety standards. IIHS Ratings: Likely received good ratings in relevant IIHS crashworthiness tests for its era. Active Features Esp: Electronic Stability Program (ESP) ABS: Anti-lock Braking System (ABS) Traction Control: Traction Control System (TCS) Brake Assist: BAS (Brake Assist System) Passive Features Airbags: Front airbags, side airbags, front and rear head curtain airbags, knee airbags (driver). Seat Belts: Pretensioning seat belts with force limiters. 💡 Technology Features Infotainment System Name: COMAND infotainment system Features: Navigation, AM/FM/CD/DVD, USB/Auxiliary inputs, Bluetooth connectivity, Harman Kardon audio system (optional). Driver Assistance Key Features: Distronic Plus (adaptive cruise control), Active Blind Spot Assist, Active Lane Keeping Assist, Parking Assist (PARKTRONIC), rearview camera. Connectivity Bluetooth: Bluetooth hands-free calling and audio streaming. Convenience Lighting: Bi-Xenon headlamps with LED daytime running lights, ambient interior lighting. Comfort Seating: Multi-contour front seats with massage, heating, and ventilation functions (optional). 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000 miles or 12 months, whichever comes first, under normal driving conditions. May vary based on oil type and driving habits (refer to manual for specifics). Major Service Interval: Indications for Service A/B at approximately 10,000/20,000 mile intervals, managed by the Assyst Plus system. Detailed service requirements are listed within the manual. Fluid Specifications Engine Oil...