🏷️ Basic Information Identification Make: Infiniti Model: M45 Year: 2004 Codes Platform Code: Y34 Generation Generation Designation: 1st Generation (Y34) 👋 Introduction Market Position Segment: Luxury Full-Size Sedan Target Audience: Owners and independent repair shops seeking factory-level repair and maintenance information. Competitive Analysis Competitors: BMW 5 Series, Mercedes-Benz E-Class, Lexus GS Series, Audi A6. Key Features Licensed Content: Officially licensed and derived from OE (Original Equipment) materials. Convenience: Instant online access, no shipping delays, always up-to-date (within subscription period). Value Proposition: Significant cost savings compared to dealership repairs or traditional printed manuals. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance, Diagnostics, Troubleshooting, Specifications Page Count Estimated Page Count: Extensive (Digital Content Equivalent to 1500+ Pages) Manual Type Type: Factory-Derived Software Manual Language Language: English Format Format: Online Software (Web-Browser Accessible) Access Duration: 1 Year (Renewable) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine disassembly, assembly, inspection, timing, oil pump, water pump, seals, gaskets. Engine Management: ECU, fuel injection, ignition system, emissions control, sensor testing, actuator diagnosis. Transmission Drivetrain: Automatic transmission service, repair, overhaul, differential, driveshafts, axle shafts. Brakes: Brake system components, ABS, EBD, brake fluid, pad replacement, rotor machining/replacement, caliper service. Suspension Steering: Front and rear suspension components, shock absorbers, struts, control arms, power steering system, alignment. Electrical Systems: Wiring diagrams, lighting, starting system, charging system, battery, fuses, relays, switches, control modules. HVAC: Heating, ventilation, air conditioning system, refrigerant handling, component testing, leak detection. Body Interior: Body panel removal/installation, interior trim, seats, door mechanisms, glass, weatherstripping. Chassis Frame: Chassis components, exhaust system, fuel tank, fuel lines. Procedures Included Maintenance Procedures: Scheduled maintenance, fluid changes (oil, coolant, brake, transmission), filter replacement, tune-ups. Repair Procedures: Step-by-step repair instructions for all major vehicle systems. Diagnostic Procedures: Troubleshooting charts, symptom-based diagnostics, DTC (Diagnostic Trouble Code) interpretation. Special Tools: Identification and usage of specialized tools required for specific repairs. Technical Depth Depth Level: Comprehensive: From basic maintenance to complete engine and transmission rebuilds, electrical system diagnostics, and bodywork repairs. 📊 Manual Specifications File Format Software Compatibility: Any PC, Laptop, Smartphone, or Tablet with a web browser and internet connection. Print Quality Digital Resolution: High-resolution digital content for clear viewing of diagrams and text. Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: VQ35DE Engine Type: 3.5L V6 DOHC 24-Valve Performance Horsepower: 280 hp @ 6200 rpm Torque: 280 lb-ft @ 4800 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 Octane or Higher Recommended) Technical Details Bore X Stroke: 95.5 mm x 81.4 mm Compression Ratio: 10.0:1 Valve Actuation: Dual Overhead Camshafts (DOHC), Variable Valve Event and Lift (VVEL) not present on this iteration. 🔧 Transmission Standard Transmission Type: 5-Speed Automatic with Manual Shift Mode (Sportronic) Features Transmission Features: Adaptive shift control, electronically controlled, lock-up torque converter. Fluid Specifications Transmission Fluid Type: Nissan Matic J (or equivalent licensed specification) 📐 Dimensions Exterior Length: 198.7 inches (5047 mm) Width: 71.7 inches (1821 mm) Height: 58.9 inches (1496 mm) Wheelbase: 113.0 inches (2870 mm) Weights Curb Weight: Approx. 3900-4000 lbs (1769-1814 kg) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (Driver and Passenger) NHTSA Side Impact: 5-Star (Front and Rear Occupants) Active Features ABS: Standard Anti-lock Braking System Ebd: Standard Electronic Brake-force Distribution Traction Control: Standard Traction Control System (TCS) Passive Features Airbags: Frontal airbags, side-impact airbags, curtain airbags (depending on trim). Seatbelts: 3-point active front seat belts with pretensioners and load limiters. 💡 Technology Features Infotainment Infotainment System: Available Bose premium audio system, navigation system (optional). Driver Assistance Parking Sensors: Available rear parking sensors. Connectivity Auxiliary Input: Available auxiliary audio input (for CD changer or external devices). 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 miles (8,000 km) or 6 months, whichever comes first (under normal driving conditions). Air Filter Replacement: Every 30,000 miles (48,000 km) Spark Plug Replacement: Every 100,000 miles (160,000 km) (Iridium type plugs) Transmission Fluid Change: Every 60,000 miles (96,000 km) or 4 years, whichever comes first. Fluid Specifications Engine Oil Type Capacity: SAE 5W-30 Synthetic; Capacity: 4.7 US quarts (4.4 liters) with filter change. Coolant Type: Nissan Genuine Super Long Life Coolant (Blue) or equivalent silicate-free, extended-life coolant. Brake Fluid Type: DOT 3 or DOT 4 Hydraulic Brake Fluid Known Issues Common Problem 1: Ignition coil failure (leading to misfires and rough idle). Common Problem 2: Oil leaks from valve cover gaskets or oil pan gasket. Common Problem 3: Front suspension component wear (e.g., ball joints, tie rod ends) due to vehicle weight. Common Problem 4: HVAC blower motor resistor failure. 📚 Vehicle History Brand Heritage Brand Origin: Infiniti is the luxury vehicle division of Japanese automaker Nissan. Model Evolution Model Lineage: The M45 (Y34) was the successor to the Infiniti Q45 and preceded the Infiniti M (later...