🏷️ Basic Information Identification Make: Mercedes-Benz Model: R-Class Model Generation: First Generation (W251/V251) Production Years Covered: 2006-2012 Codes Chassis Code: W251 👋 Introduction Market Position Segment: Luxury Crossover SUV (initially marketed as a 'Grand Sports Tourer') Competitive Analysis Competitors: BMW X5, Audi Q7, Volvo XC90, Lexus RX Key Features Unique Selling Proposition: Spacious, flexible interior; premium Mercedes-Benz comfort and build quality; advanced technology; available in long-wheelbase variants for enhanced rear passenger space. 📋 Manual Details Coverage Areas General Coverage: Full Service & Repair Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Downloadable PDF Page Count Estimated Page Count: Hundreds Licensing Licensing: Lifetime use, no expiry, no renewal fees Platform Compatibility Compatibility: Windows & MAC computers, tablets, smartphones 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, engine management, fuel system, cooling system, exhaust system, driveline, transmission (automatic), transfer case (if applicable), drive axles, differentials. Chassis: Suspension (front and rear), steering system, brake system (hydraulic, ABS, ESP), wheels, tires, chassis and frame. Electrical: 12V electrical system, charging system, starting system, lighting, instruments, body control modules (BCM), CAN bus communication, infotainment system, comfort systems (HVAC), driver assistance systems. Body: Exterior body panels, interior trim, doors, windows, sunroof, seats, body hardware, collision repair information. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, lubrication. Diagnostics: Troubleshooting procedures, diagnostic trouble codes (DTCs), symptom-based diagnostics, wiring diagrams. Repair: Component removal and installation, adjustments, overhaul procedures, system diagnostics and repair. Special Tools: Identification and usage of specialized tools required for specific repairs. Technical Depth Depth: Comprehensive, covering basic to advanced repairs and diagnostics, suitable for professional technicians and experienced DIY enthusiasts. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Printable (single pages or entire manual) Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Options: 3.5L V6 (M272 E35), 5.0L V8 (M273 E50), 3.0L V6 Diesel (OM642 DE30 LA) Performance Power Output 3.5L V6: Approx. 268 hp @ 6000 rpm Torque 3.5L V6: Approx. 258 lb-ft @ 2400-5000 rpm Power Output 5.0L V8: Approx. 382 hp @ 6000 rpm Torque 5.0L V8: Approx. 391 lb-ft @ 2800-4800 rpm Power Output 3.0L V6 Diesel: Approx. 221 hp @ 3800 rpm Torque 3.0L V6 Diesel: Approx. 384 lb-ft @ 1600-2600 rpm Fuel System Fuel Type: Unleaded gasoline (3.5L, 5.0L), Diesel (3.0L) Engine Management ECU Type: ME (Gasoline), CDI (Diesel) 🔧 Transmission Standard Transmission Type: 7-speed automatic (7G-TRONIC) Optional Transmission Type: N/A (7G-TRONIC was standard across most variants) Features Drivetrain: All-Wheel Drive (4MATIC) standard on most models Fluid Specifications Atf Type: MB 236.14 (for 7G-TRONIC) 📐 Dimensions Exterior Wheelbase Standard: Approx. 3081 mm (121.3 in) Wheelbase Long: Approx. 3215 mm (126.6 in) Length Standard: Approx. 4922 mm (193.8 in) Length Long: Approx. 5159 mm (203.1 in) Cargo Cargo Volume Seats Up: Varies by configuration, but generally generous for its class. Weights Curb Weight: Approx. 4,700 - 5,100 lbs (2130 - 2315 kg), depending on engine and configuration. 🛡️ Safety Features Ratings NHTSA Rating: Generally good ratings in its era, refer to specific model year testing for details. Active Features Standard Safety: ABS, EBD, Brake Assist, Traction Control (ASR), Electronic Stability Program (ESP), Tire Pressure Monitoring System (TPMS). Passive Features Airbags: Front airbags, side airbags, curtain airbags, optional rear side airbags. 💡 Technology Features Infotainment System Name: COMAND (Cockpit Management and Navigation) Features: Navigation system, AM/FM/CD/DVD audio, auxiliary input, optional Bluetooth connectivity, optional Harman Kardon sound system. Driver Assistance Optional Systems: Distronic PLUS (adaptive cruise control), Parktronic (parking sensors), rearview camera. Connectivity Interface: CAN Bus architecture for integrated control of various vehicle systems. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000 miles or 12 months, though the car's flexible service system (ASSYST PLUS) may adjust based on driving conditions. Transmission Service: Recommended every 40,000 - 60,000 miles for the 7G-TRONIC transmission fluid and filter change. Fluid Specifications Engine Oil: Mobil 1 Synthetic 0W-40 or equivalent meeting MB-Approval 229.5 (for gasoline engines). Refer to manual for diesel specific oil. Coolant: Mercedes-Benz Coolant/Antifreeze (MB 325.0 or MB 326.0 specification), typically a 50/50 mix with distilled water. Brake Fluid: DOT 4 Low Viscosity (DOT 4 LV) meeting MB-Approval 331.0. Known Issues Common Wear Items: Air suspension components (if equipped), various sensor failures (e.g., camshaft position, crankshaft position), ignition coils, drive belts, and pulleys. Diesel Specific Issues: Diesel Particulate Filter (DPF) regeneration issues, glow plug failures, EGR valve issues on OM642 diesel engine. Gasoline Specific Issues: M272 V6 engine intake manifold tumble flap failures, balance shaft wear (check for specific VIN ranges), oil cooler leaks. 📚 Vehicle History Brand Heritage Manufacturer: Mercedes-Benz, a long-standing German luxury automotive manufacturer with a reputation for engineering excellence and comfort. Model Evolution Introduction Purpose: The R-Class was introduced as a unique vehicle concept aiming...