🏷️ Basic Information Identification Make: Infiniti Model: Q45 Year: 2002 Codes Chassis Code: F50 Engine Code: VH45DE 👋 Introduction Market Position Segment: Full-Size Luxury Sedan Positioning: Flagship Model, Competitor to German and American Luxury Sedans Competitive Analysis Competitors: Lexus LS, BMW 7 Series, Mercedes-Benz S-Class, Cadillac DTS Key Features Defining Characteristics: Powerful V8 Engine, Luxurious Interior, Advanced Technology for its era Value Proposition Diy Advantage: Enables DIY repairs and maintenance, saving significant costs compared to dealership or independent shop labor. Licensing Licensing Source: Officially Licensed, Derived from OE (Original Equipment) Materials 📋 Manual Details Coverage Areas General Coverage: Comprehensive Service and Repair Information Page Count Estimated Page Count: Extensive (Software-based, content equivalent to thousands of printed pages) Manual Type Type: Service and Repair Manual Software Language Language: English Format Format: Online Access (Web Browser Compatible) 📖 Manual Coverage Systems Covered Engine: VH45DE 4.5L V8 Engine (Diagnosis, Repair, Overhaul) Drivetrain: All-Wheel Drive (AWD) System, Rear-Wheel Drive (RWD) Components Transmission: Automatic Transmission (RE4R01A) - Diagnosis, Repair, Fluid Service Suspension: Front and Rear Suspension, Steering System Components Brakes: Brake System (Hydraulic, ABS, EBD), Parking Brake Electrical: Full Electrical Schematics, Wiring Diagrams, Component Location, Diagnosis HVAC: Heating, Ventilation, and Air Conditioning (HVAC) System Body: Bodywork, Interior Components, Exterior Trim, Doors, Glass Climate Control: Automatic Climate Control System Safety Systems: Airbag System, Seatbelt Pretensioners Procedures Included Maintenance: Scheduled Maintenance Intervals, Fluid Changes, Filter Replacements Diagnostics: Troubleshooting Guides, Diagnostic Trouble Codes (DTCs), Symptom-Based Diagnosis Repair: Component Removal and Installation, Assembly and Disassembly Procedures Rebuilding: Engine Rebuilding, Transmission Overhaul Calibration: Electronic Control Unit (ECU) Calibration, Sensor Adjustments Wiring Diagrams: Detailed Circuit Diagrams for All Electrical Systems Specifications: Torque Specifications, Clearance Measurements, Alignment Data Technical Depth Depth: OE-Level Technical Information, Detailed Repair Procedures Diagnostics Level: Advanced Diagnostics with Specific Procedures and Datapoints Repair Level: Complete Repair Procedures from Minor Adjustments to Major Component Replacement 📊 Manual Specifications File Format Format: Proprietary RepairSurge Software (Web-based) Print Quality Printability: Printable Sections (subject to software licensing) Binding Type Binding: N/A (Digital Software) Paper Type Paper: N/A (Digital Software) Compatibility Device Compatibility: PC, Laptop, Smartphone, Tablet with Web Browser and Internet Connection Access Duration Subscription Length: 1 Year ⚙️ Engine Specifications Primary Engine Engine Type: V8 Displacement: 4.5 Liters (4494 cc) Engine Code: VH45DE Performance Horsepower: 270 hp @ 6000 rpm (approx.) Torque: 288 lb-ft @ 4000 rpm (approx.) Fuel System Fuel Delivery: Multi-Point Fuel Injection (MPFI) Fuel Type: Premium Unleaded Gasoline Cooling System Coolant Type: Nissan Genuine Super Long Life Coolant (Blue) or equivalent silicate-free, ethylene glycol-based coolant Coolant Capacity: Approx. 9.7 Liters (10.3 US Quarts) Lubrication Oil Type: API SG, SH, or SJ, SAE 5W-30 or 5W-40 Oil Capacity: Approx. 5.0 Liters (5.3 US Quarts) with filter change 🔧 Transmission Standard Transmission Type: 4-Speed Automatic with Overdrive Optional Drive Type: All-Wheel Drive (AWD) Features Transmission Model: RE4R01A Fluid Specs Fluid Type: Nissan Matic D ATF or equivalent Dexron III/Mercon compatible Fluid Capacity: Approx. 4.2 Liters (4.4 US Quarts) for fluid change only 📐 Dimensions Exterior Length: Approx. 5009 mm (197.2 in) Width: Approx. 1829 mm (72.0 in) Height: Approx. 1440 mm (56.7 in) Wheelbase: Approx. 2850 mm (112.2 in) Weights Curb Weight: Approx. 1760-1830 kg (3880-4035 lbs) Gross Vehicle Weight Rating: Approx. 2300 kg (5070 lbs) 🛡️ Safety Features Ratings NHTSA Front Impact: 5 Star (Driver), 5 Star (Passenger) NHTSA Side Impact: 4 Star (Driver), 4 Star (Passenger) Active Features ABS: Standard Anti-lock Braking System (ABS) Ebd: Electronic Brake force Distribution (EBD) Traction Control: Traction Control System (TCS) Passive Features Airbags: Driver and Front Passenger Airbags, Side-Impact Airbags (Optional/Standard on some trims) Seatbelts: 3-Point Front Seatbelts with Pretensioners, LATCH System for child seats 💡 Technology Features Infotainment Audio System: Premium Bose® Audio System, CD Player, AM/FM Radio Navigation: Optional GPS Navigation System (CRT Screen) Driver Assistance Cruise Control: Standard Cruise Control Parking Assist: Optional Rear Parking Sensors Connectivity Connectivity Features: Limited by era; basic telematics and analog phone integration may have been available. Interior Tech Keyless Entry: Standard Keyless Entry System Climate Control Tech: Automatic Climate Control with Rear Vents 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 6 months (severe use), 7,500 miles or 12 months (normal use) using synthetic oil. Transmission Fluid Change: Every 30,000-60,000 miles, or as per service manual recommendations, especially under severe driving conditions. Coolant Replacement: Initial replacement at 105,000 miles or 7 years, then every 60,000 miles or 4 years thereafter. Spark Plug Replacement: Platinum-tipped spark plugs typically require replacement every 100,000 miles. Fluid Specifications Brake Fluid: DOT 3 or DOT 4 Power Steering Fluid: Nissan Genuine Power Steering Fluid or Dexron III/Mercon compatible ATF Differential Fluid: API GL-5, SAE 75W-90 Hypoid Gear Oil (for AWD rear differential) Known Issues Ignition Coils: Infamous for premature failure of individual ignition coils, leading to misfires. Timing Chain Tensioners: Potential for wear and failure...