🏷️ Basic Information Identification Make: Mercedes-Benz Model: GL550 Year: 2008 Generation Chassis Code: X164 Codes Engine Code: M273.962 👋 Introduction Market Position Vehicle Segment: Full-size Luxury SUV Competitive Analysis Key Competitors: BMW X5, Audi Q7, Lexus LX570, Cadillac Escalade Key Features Vehicle Highlights: Spacious interior, powerful V8 engine, luxurious appointments, advanced safety features, sophisticated ride and handling for its class. Manual Value Proposition Benefit To Owner: Empowers owners and independent technicians with the same official factory information used by Mercedes-Benz dealerships, enabling accurate diagnosis and efficient repairs. 📋 Manual Details Coverage Areas Systems Covered: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Body & Chassis, Interior, Exterior, Safety Systems, Diagnostic Procedures, Maintenance Schedules, Technical Specifications. Page Count Estimated Pages: 2000+ Manual Type Type: Official Service and Repair Manual Software Language Language: English Format Format: Digital Software (likely PDF or proprietary executable) 📖 Manual Coverage Systems Covered Powertrain: Comprehensive coverage of the 5.5L V8 engine (M273), 7-speed automatic transmission (7G-TRONIC), 4MATIC all-wheel-drive system. Procedures Included Maintenance: Routine maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement. Repair: Detailed step-by-step repair procedures for all major vehicle systems, including engine overhaul, transmission rebuild, brake system repairs, suspension component replacement, electrical diagnostics and repair. Troubleshooting: Diagnostic trouble codes (DTCs) with explanations, symptom-based troubleshooting guides, electrical circuit diagrams and testing procedures. Technical Depth Depth: Factory-level technical information, including diagnostic procedures, component testing, specifications, and torque values for advanced repairs and diagnostics. 📊 Manual Specifications File Format Software Features: Searchable text, interactive diagrams, printable pages, potentially video clips or animations for complex procedures. Print Quality Print Capability: High-resolution graphics and text, suitable for professional printing. Binding Type Binding: N/A (Software) Paper Type Paper Quality: N/A (Software) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated V8 Displacement: 5.5 Liters (5461 cc) Bore X Stroke: 98.0 mm x 90.5 mm Compression Ratio: 10.0:1 Valve Train: DOHC, 4 valves per cylinder Cylinder Block Material: Aluminum Alloy Cylinder Head Material: Aluminum Alloy Performance Horsepower: 382 hp @ 6000 rpm Torque: 391 lb-ft @ 2800-4800 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) / Sequential Port Injection Fuel Type: Premium Unleaded Gasoline (91 Octane or higher recommended) Engine Oil Capacity: 8.5 Quarts (8.0 Liters) Fluid Specifications Engine Oil Type: Mobil 1 Synthetic 0W-40 (MB-Approval 229.5) Maintenance Spark Plug Part Number: NGK Iridium (e.g., LFR6AIX-11 or equivalent OEM) 🔧 Transmission Standard Transmission Type: 7-Speed Automatic with TouchShift Transmission Model: 7G-TRONIC Drivetrain: 4MATIC All-Wheel Drive (AWD) Features Shift Modes: Comfort (C) and Sport (S) modes Fluid Specifications Transmission Fluid Type: MB-Approval 236.14 (e.g., Pentosin ATF 134, Mercedes-Benz Genuine ATF) Fluid Capacities Transmission Fluid Capacity: Approximately 8.5-9.5 Liters (18.5-20 US quarts) for a complete fill/flush 📐 Dimensions Exterior Length: 199.9 inches (5077 mm) Width: 76.5 inches (1943 mm) Height: 72.4 inches (1839 mm) Wheelbase: 118.5 inches (3010 mm) Interior Seating Capacity: 7 passengers Cargo Cargo Volume Behind 3Rd Row: 14.3 cu ft (0.40 m³) Cargo Volume Behind 2Nd Row: 41.0 cu ft (1.16 m³) Cargo Volume With 2Nd And 3Rd Rows Folded: 83.3 cu ft (2.36 m³) Weights Curb Weight: 5,445 lbs (2470 kg) Gross Vehicle Weight Rating Gvwr: 7,077 lbs (3210 kg) Towing Capacity: 7,700 lbs (3500 kg) (with optional trailer hitch) 🛡️ Safety Features Ratings NHTSA Front Crash Test: 5-Star Rating NHTSA Side Crash Test: 5-Star Rating IIHS Rollover Rating: Four-star rating (based on 2008 model year testing, excluding ESC role) Active Features Electronic Stability Program Esp: Standard (ADAPTIVE ESP®) Anti Lock Braking System ABS: Standard Brake Assist System Bas: Standard Traction Control System TCS: Standard (ASR) Passive Features Airbags: Front, front-side, rear-side airbags, and curtain airbags for all three rows. Seatbelts: 3-point seatbelts with pretensioners and force limiters. Child Seat Anchors: LATCH (Lower Anchors and Tethers for Children) system. 💡 Technology Features Infotainment Audio System: COMAND APS (Cockpit Management and Navigation System) with integrated radio, CD/DVD player, and optional Harman Kardon surround sound system. Navigation: DVD-based navigation system. Connectivity: Bluetooth connectivity for hands-free calling and audio streaming. Driver Assistance Parking Assist: PARKTRONIC parking sensors (front and rear). Cruise Control: Standard cruise control with SPEEDTRONIC variable speed limiter. Lighting: Bi-Xenon headlights with active curve illumination, LED taillights. Convenience Features Keyless Entry Start: KEYLESS-GO (optional). 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 miles (16,000 km) or 1 year, whichever comes first (using synthetic oil). Transmission Fluid Service: Typically recommended every 40,000-60,000 miles (64,000-97,000 km), consult manual for exact interval and procedure. Engine Air Filter Replacement: Inspect every 20,000 miles (32,000 km), replace as needed. Often recommended with major service intervals. Cabin Air Filter Replacement: Every 20,000 miles (32,000 km) or annually. Brake Fluid Flush: Every 2 years (regardless of mileage). Coolant Flush: Initial change at 100,000 miles (160,000 km), then every 50,000 miles (80,000 km) thereafter (using MB-approved coolant). Fluid Specifications...