🏷️ Basic Information Identification Make: Infiniti Model: Q45 Year: 2004 👋 Introduction Market Position Positioning: Premium luxury sedan, competing with established European and domestic brands. Competitive Analysis Competitors: BMW 7 Series, Mercedes-Benz S-Class, Lexus LS, Audi A8 Key Features Features: Powerful V8 engine, advanced suspension, luxurious interior, sophisticated technology for its era. 📋 Manual Details Coverage Areas Coverage: Full year of access to factory-derived service and repair information Page Count Page Count Estimate: Extensive (exact page count not specified, but implied to be comprehensive for a full service manual) Manual Type Type: Online Service and Repair Manual Software Language Language: English Format Format: Web-based access (compatible with PC, laptop, smartphone, tablet via web browser) 📖 Manual Coverage Systems Covered Systems: Engine, Drivetrain, Transmission, Brakes, Suspension, Steering, Electrical System, HVAC, Bodywork, Chassis Procedures Included Procedures: Maintenance, Repair, Diagnostics, Troubleshooting, Component Replacement, Electrical Schematics, Wiring Diagrams Technical Depth Depth: Comprehensive factory-level service and repair data, suitable for DIY enthusiasts and professional technicians 📊 Manual Specifications File Format Format: Web-based access, no downloadable file format specified (streaming/browser-based) Print Quality Quality: N/A (digital format, quality depends on browser rendering) Binding Type Binding: N/A (digital format) Paper Type Paper: N/A (digital format) ⚙️ Engine Specifications Primary Engine Engine: VQ35DE (3.5L DOHC 24-valve V6) Performance Horsepower: 280 hp @ 6200 rpm (approximate) Torque: 260 lb-ft @ 4800 rpm (approximate) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) with sequential multiport fuel injection Engine Codes Engine Code: VQ35DE Displacement Displacement Cc: 3498 Cylinder Arrangement Cylinders: V6 Bore X Stroke Bore X Stroke Mm: 95.5 mm x 81.4 mm Compression Ratio Compression Ratio: 10.3:1 Fuel Type Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) 🔧 Transmission Standard Transmission: 5-speed automatic transmission Optional Transmission Type: N/A (only automatic offered for this year) Features Drive Mode: RWD (Rear-Wheel Drive) Fluid Type Transmission Fluid Type: NISSAN Matic J or equivalent 📐 Dimensions Exterior Wheelbase Mm: 2850 Length Mm: 5010 Width Mm: 1825 Height Mm: 1450 Weights Curb Weight Kg: 1760-1800 (approximate, depending on trim and options) Wheels Tires Wheel Size: 17-inch or 18-inch alloy wheels Tire Size: 225/55R17 or 225/50R18 (front), 245/45R18 (rear on some trims) Bolt Pattern: 5x114.3 🛡️ Safety Features Ratings NHTSA Front Impact: 5-star (likely, based on era and class) IIHS Front Offset: Good (likely, based on era and class) Active Features Traction Control: Standard (TCS) Stability Control: Standard (VDC - Vehicle Dynamic Control) Passive Features Airbags: Frontal, Side-impact, Curtain airbags Seatbelts: Pretensioner and load-limiters Braking Front Brakes: Vented Discs (12.6 inches) Rear Brakes: Vented Discs (12.0 inches) ABS: Standard (Anti-lock Braking System) 💡 Technology Features Infotainment Audio System: Bose premium audio system with CD player and cassette (on some models) Navigation: Optional factory navigation system with touch screen interface Driver Assistance Cruise Control: Standard adaptive cruise control (on some trims) Convenience Keyless Entry: Intelligent Key system with push-button start Climate Control: Automatic climate control with dual-zone functionality Lighting Headlights: Xenon HID headlights with automatic leveling 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 3 months (severe duty), 7,500 miles or 6 months (normal duty) - consult manual for precise intervals. Air Filter Replacement: Every 15,000 miles or 12 months (check for condition). Spark Plug Replacement: Every 60,000 miles (Iridium-tipped spark plugs). Fluid Specifications Engine Oil Type: Synthetic 5W-30 API SN/SP, ILSAC GF-6A or higher Engine Oil Capacity Liters: 4.9 Liters (with filter change) Coolant Type: Nissan Genuine Super Long Life Coolant (Blue) or equivalent (50/50 mix with distilled water) Brake Fluid Type: DOT 3 Known Issues Common Problems: Ignition coil failure, oil pressure sending unit issues, HVAC blower motor resistor failure, timing chain tensioner wear (less common on VQ35DE than earlier VQs), potential for coolant leaks from the water pump or thermostat housing. 📚 Vehicle History Brand Heritage Brand Origin: Infiniti is the luxury vehicle division of Nissan, established in 1989. Model Evolution Generation: Second Generation (Y33 platform - chassis code HGY50 for export models, though commonly associated with the Y33 chassis lineage). Production Production Years Model: 1998-2006 (for the second generation Q45). Manufacturing Location: Japan