🏷️ Basic Information Identification Make: Mercedes-Benz Model: GL450 Year: 2008 Codes Chassis Code: X164 Engine Code: M273.920 👋 Introduction Market Position Vehicle Segment: Full-size Luxury SUV Target Audience: Affluent families seeking luxury, space, comfort, and advanced technology in an SUV. Competitive Analysis Key Competitors: BMW X5, Audi Q7, Lexus RX, Cadillac Escalade, Lincoln Navigator, Porsche Cayenne. Key Features Vehicle Philosophy: Combines Mercedes-Benz luxury and refinement with the practicality and versatility of a large SUV, emphasizing comfort, safety, and on-road prowess. Manual Value Proposition: Provides authorized diagnostic and repair procedures, ensuring factory-correct maintenance and minimizing the risk of incorrect repairs, crucial for complex Mercedes-Benz systems. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive Service & Repair Page Count Estimated Page Count: Over 2000 pages (typical for official Mercedes-Benz factory manuals) Manual Type Manual Type: Factory Service Manual (FSM) / Repair Manual Software Language Language: English Format Format: Software (likely a searchable digital format, e.g., PDF archive, proprietary application) 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical (including V8 M273, timing, seals, gaskets), engine management (fuel injection, ignition, emissions), cooling system, lubrication system, exhaust system. Transmission Systems: 7G-TRONIC automatic transmission (722.9), transmission control module (TCM), hydraulic system, torque converter, shift mechanisms, fluid specifications. Drivetrain Systems: All-wheel drive (4MATIC) system, front and rear differentials, drive shafts, CV joints, wheel hubs. Suspension Systems: Adaptive Damping System (ADS), AIRMATIC air suspension, control arms, ball joints, shock absorbers, springs, stabilizers, steering linkage, power steering system. Brake Systems: Front and rear disc brakes, ABS (Anti-lock Braking System), ESP (Electronic Stability Program), Brake Assist, parking brake, brake fluid specifications. Electrical Systems: 12V battery, charging system (alternator), starting system (starter), lighting (headlights, taillights, interior), power windows, power seats, mirrors, wipers, horn, fuse boxes, relay locations. Body And Chassis: Body structure, exterior panels, doors, hood, tailgate, interior trim, seat removal, sunroof, chassis components, corrosion protection. Climate Control: Automatic climate control (THERMATIC/THERMOTRONIC), A/C system components, refrigerant handling, heating system, ventilation, cabin filters. Diagnostics And Troubleshooting: OBD-II (On-Board Diagnostics II) system, diagnostic trouble codes (DTCs), fault finding strategies, wiring diagrams, component testing. Safety Systems Airbag System: SRS (Supplemental Restraint System) components, airbag modules, seatbelt pre-tensioners, crash sensors, diagnostic procedures. Procedures Included Maintenance Procedures: Oil changes, filter replacements (oil, air, cabin, fuel), spark plug replacement, coolant flushes, brake fluid replacement, drive belt inspection and replacement, battery maintenance. Repair Procedures: Engine component replacement (e.g., alternator, starter, water pump), transmission service, brake caliper/rotor replacement, suspension component replacement, electrical component diagnosis and replacement, body panel repair/replacement. Troubleshooting Guides: Step-by-step diagnostic flowcharts for common and uncommon issues, symptom-based troubleshooting, component testing procedures. Diagnostic Tool Usage: Information on using Mercedes-Benz proprietary diagnostic tools (e.g., STAR DIAGNOSIS/XENTRY) and common aftermarket scan tools for reading and clearing DTCs, performing module programming/coding, and actuation tests. Technical Depth Depth Of Information: Factory-level technical details, including component removal/installation sequences, torque specifications, diagnostic parameters, wiring schematics, and detailed system operation explanations. Diagnostic Capabilities: Advanced diagnostic procedures for complex electronic systems, including sensor data interpretation, actuator testing, and module initialization/configuration. 📊 Manual Specifications File Format File Format Details: Likely a compiled software package, potentially with an embedded browser or executable. Compatibility with common operating systems (Windows) is expected. Searchable text and hyperlinked navigation are standard for such software. Print Quality Print Quality: Digital format, optimized for screen viewing. Printable pages typically have high resolution for clarity. Binding Type Binding Type: N/A (Software/Digital format) Paper Type Paper Type: N/A (Software/Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated V8 Displacement: 4.6 Liters (4663 cc) Bore X Stroke: 92.9 mm x 86.0 mm Compression Ratio: 10.7:1 Engine Code: M273.920 Performance Horsepower: 335 hp @ 6000 rpm Torque: 339 lb-ft (460 Nm) @ 2700-5000 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (Bosch ME 9.7 control unit) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Emission Controls: Secondary air injection, catalytic converters, O2 sensors, EGR (Exhaust Gas Recirculation) if applicable by region. 🔧 Transmission Standard Transmission Type: 7-Speed Automatic Transmission Code: 7G-TRONIC (722.9) Optional Optional Transmission: N/A (7G-TRONIC was standard for the GL450 in 2008) Features Drive Modes: Comfort (C) and Sport (S) modes. Transmission Fluid Spec: MB Approval 236.14 (e.g., Pentosin ATF 134, Fuchs Titan ATF 4134) 📐 Dimensions Exterior Length: 200.3 inches (5087 mm) Width: 76.4 inches (1940 mm) Height: 72.4 inches (1839 mm) Wheelbase: 118.1 inches (3000 mm) Interior Seating Capacity: 7 passengers (standard 3 rows) Cargo Cargo Volume Behind 3Rd Row: 14.3 cu ft (0.40 m³) Cargo Volume Behind 2Nd Row: 43.8 cu ft (1.24 m³) Cargo Volume Behind 1St Row: 78.2 cu ft (2.21 m³) Weights Curb Weight: Approx. 5,027 lbs (2280 kg) Gross Vehicle Weight Rating: Approx. 6,768 lbs (3070 kg) Towing Capacity: 7,000 lbs (3175 kg) (with optional towing package) 🛡️ Safety Features Ratings NHTSA Front Crash Test Rating: ★★★★★ (5-Star) NHTSA Side Crash Test Rating:...