🏷️ Basic Information Identification Make: Mercedes-Benz Model: ML550 Model Code: W164 Year: 2009 👋 Introduction Market Position Segment: Mid-size Luxury SUV (Wagen) Competitive Analysis Competitors: BMW X5, Audi Q7, Porsche Cayenne, Lexus RX Key Features Luxury Appointments: High-quality interior materials, advanced comfort features Performance: Powerful V8 engine, advanced AWD system (4MATIC) 📋 Manual Details Coverage Areas Coverage Type: Comprehensive Service and Repair Page Count Estimated Page Count: Over 2000 pages (estimated for typical full service manuals) Manual Type Manual Type: Software Service & Repair Manual Language Language: English Format Format: Digital Software (likely PDF or proprietary viewer) 📖 Manual Coverage Systems Covered Engine: Service, diagnostics, repair for M273 V8 engine Transmission: Service, diagnostics, repair for 7G-TRONIC (722.9) automatic transmission Drivetrain: Front and rear axle, differentials, driveshafts, AWD system Suspension: Front and rear suspension components, AIRMATIC air suspension system (if equipped) Brakes: Hydraulic brake system, ABS, ESP, brake pad/rotor replacement, brake fluid service Steering: Power steering system, steering column, steering gear Electrical System: 12V battery, charging system, starter, lighting, power windows, seats, mirrors Engine Management: ECU diagnostics, sensor testing, fuel injection, ignition system Climate Control: HVAC system operation, diagnosis, component replacement (compressor, blower motor, etc.) Infotainment: Audio system, navigation (COMAND), display units Body And Trim: Exterior panel removal, interior trim, doors, tailgate, bumpers Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks Troubleshooting: Diagnostic trouble codes (DTCs), symptom-based diagnostics, common failure analysis Major Repairs: Engine rebuild, transmission overhaul, suspension component replacement Diagnostics: OBD-II scanning, sensor data interpretation, actuator testing Component Replacement: Step-by-step guides for replacing key components Technical Depth Depth: Factory-level technical specifications and repair procedures Wiring Diagrams: Included (typical for official manuals) Torque Specifications: Detailed torque values for all fasteners Special Tools: Identification and usage of Mercedes-Benz specific tools 📊 Manual Specifications File Format File Type: Software Application / Digital Document Print Quality Print Capability: Printable pages (if PDF or similar) Binding Type Binding Type: N/A (Digital Software) Paper Type Paper Type: N/A (Digital Software) ⚙️ Engine Specifications Primary Engine Engine Code: M273 Engine Type: Naturally Aspirated V8 Displacement: 5.5 Liters (5461 cc) Bore X Stroke: 98.0 mm x 90.5 mm Compression Ratio: 10.7:1 Performance Horsepower: 382 hp @ 6000 rpm Torque: 391 lb-ft @ 2800-4800 rpm Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Valve Train Valve Actuation: Dual Overhead Camshafts (DOHC) with Variable Valve Timing (VVT) 🔧 Transmission Standard Transmission Type: 7-Speed Automatic (7G-TRONIC) Transmission Code: 722.9 Features Drive Modes: Comfort (C) and Sport (S) modes Fluid Specifications Transmission Fluid Type: MB 236.14 (e.g., Pentosin ATF 134, Febi Bilstein ATF 236.14) Fluid Capacity Transmission Fluid Capacity: Approx. 9.5 liters (dry fill), 7.5 liters (pan drop and fill) 📐 Dimensions Exterior Length: 4784 mm (188.3 inches) Width: 1911 mm (75.2 inches) Height: 1776 mm (69.9 inches) Wheelbase: 2915 mm (114.8 inches) Weights Curb Weight: Approx. 2140 kg (4718 lbs) Gross Vehicle Weight Rating: Approx. 2800 kg (6173 lbs) Towing Capacity: Up to 7000 lbs (3175 kg) (with optional tow package) 🛡️ Safety Features Ratings NHTSA Front Crash Rating: 5-Star (for 2009 model) IIHS Top Safety Pick: Yes (for 2009 model) Active Features Electronic Stability Control: Standard (ESP) Antilock Braking System: Standard (ABS) Traction Control: Standard (ASR) Passive Features Airbags: Front, side, and curtain airbags Seatbelts: 3-point inertia-reel seatbelts with pretensioners and force limiters 💡 Technology Features Infotainment Infotainment System: COMAND (Cockpit Management and Navigation) Audio System: Harman Kardon LOGIC 7 surround sound system (optional) Driver Assistance Adaptive Cruise Control: DISTRONIC (optional) Parking Assistance: PARKTRONIC parking sensors (front and rear) Connectivity Bluetooth Interface: Standard (for phone calls, potentially audio streaming depending on specific package) Comfort Features Heated Seats: Standard Memory Seats: Standard for driver and front passenger Panoramic Sunroof: Optional 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 miles or 12 months, whichever comes first (using synthetic oil) Transmission Fluid Change: Every 40,000 - 60,000 miles (consult manual for exact intervals based on driving conditions) Brake Fluid Flush: Every 2 years Engine Air Filter Replacement: Every 30,000 miles or as needed Cabin Air Filter Replacement: Every 15,000 - 20,000 miles or annually Fluid Specifications Engine Oil Specification: API SN, ACEA A3/B4, Mercedes-Benz Specification 229.5 (e.g., Mobil 1 0W-40, Castrol Edge 0W-40) Coolant Specification: Mercedes-Benz Specification 325.0 or 326.0 (Antifreeze/Coolant, Blue) Power Steering Fluid: MB 343.0 (e.g., Pentosin CHF 11S) Known Issues Intake Manifold Cracks: Plastic intake manifold can develop cracks, leading to vacuum leaks and performance issues. Airmatic Suspension Leaks: Air springs and compressor can develop leaks over time, leading to vehicle sag. Oil Cooler Seals: Oil cooler seals can degrade, causing oil leaks into the coolant system. Door Handle Actuators: Faulty door handle actuators can prevent doors from opening or locking. 📚 Vehicle History Brand Heritage Brand Legacy: Mercedes-Benz known for engineering excellence,...