🏷️ Basic Information Identification Make: Infiniti Model: I35 Year: 2003 Codes Chassis Code: VH35DE (VQ35DE based engine) 👋 Introduction Market Position Segment: Luxury Mid-size Sedan Competitive Analysis Competitors: Lexus ES, Acura TL, BMW 3 Series, Mercedes-Benz C-Class. Key Features Premium Appointments: Known for its comfortable ride, quiet interior, and upscale features derived from Nissan's Maxima platform. Performance Focus: V6 engine provides a good balance of power and refinement. 📋 Manual Details Coverage Areas Primary Coverage: 2003 Infiniti I35 Page Count Estimated Page Count: Extensive (Digital, comparable to 2000+ pages in print) Manual Type Type: Official Service and Repair Manual Software (Factory-Derived) Language Language: English Format Format: Online Software / Web-Based Access 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, engine control system (ECM), fuel system, cooling system, lubrication system, exhaust system, ignition system, variable valve timing (VVT). Drivetrain: Automatic transmission (RE4F04B/V), clutch operation, driveshafts, axles, final drive, differential. Suspension: Front suspension (MacPherson strut), rear suspension (multi-link), shock absorbers, springs, control arms, bushings. Steering: Power steering system, steering column, steering gear, steering angle sensor. Brakes: Front disc brakes, rear disc brakes, Anti-lock Braking System (ABS), Brake Assist (BA), Electronic Brake-force Distribution (EBD), parking brake. Electrical System: Battery, charging system, starter, lighting system (headlights, taillights, interior), power windows, power seats, mirrors, horn, fuses, relays. Body And Interior: Body panels, doors, hood, trunk, interior trim, seats, airbags, seat belts, climate control system (HVAC), audio system, navigation system (if equipped). HVAC: Air conditioning compressor, evaporator, condenser, blower motor, control module, refrigerant system, cabin air filter. Safety Systems: Airbag system, seatbelt pre-tensioners, SRS control unit. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, tire rotation, brake inspection. Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), circuit diagrams, wiring schematics, component testing procedures. Repair: Step-by-step repair instructions for all major systems, component removal and installation, component rebuilding (where applicable). Adjustment: Wheel alignment specifications, steering wheel centering, parking brake adjustment. Specifications: Torque specifications for all fasteners, electrical specifications, fluid capacities, diagnostic parameters. Technical Depth Depth: Comprehensive: Covers everything from basic scheduled maintenance to advanced engine and transmission diagnostics and repair, including electrical system troubleshooting with detailed wiring diagrams. 📊 Manual Specifications File Format Accessibility: Web-based access via browser, compatible with PC, laptop, smartphone, tablet. Print Quality Visual Quality: High-resolution digital content, clear diagrams and illustrations. Binding Type Access Method: One-year subscription-based access. Paper Type Digital Media: Digital HTML/CSS/JavaScript for web display, potentially PDF for downloads. ⚙️ Engine Specifications Primary Engine Engine Code: VQ35DE Engine Type: 3.5L V6 DOHC 24-valve Performance Horsepower: 255 hp @ 6400 rpm Torque: 246 lb-ft @ 4400 rpm Fuel System Injection Type: Electronic Fuel Injection (EFI) Engine Features Variable Valve Timing: Intake and Exhaust Variable Valve Timing (VVT) 🔧 Transmission Standard Type: 5-speed Automatic (RE4F04B/V) Optional Type: None (Manual transmission not offered for I35) Features Control Mode: Electronically controlled with lock-up torque converter. 📐 Dimensions Exterior Length: 192.5 inches (4890 mm) Width: 70.2 inches (1783 mm) Height: 56.3 inches (1430 mm) Wheelbase: 106.3 inches (2700 mm) Weights Curb Weight: Approximately 3472 lbs (1575 kg) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star Driver, 4-Star Passenger NHTSA Side Impact: 5-Star Driver, 5-Star Rear Passenger IIHS Front Offset: Good Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Standard Traction Control System (TCS) Brake Assist: Standard Brake Assist (BA) Passive Features Airbags: Driver and front passenger airbags, front side-impact airbags. Seatbelts: Front pretensioner seatbelts with load limiters. 💡 Technology Features Infotainment Audio System: Bose premium audio system with CD player and cassette deck (optional Nakamichi system). Navigation: Optional DVD-based navigation system. Driver Assistance Cruise Control: Standard cruise control. Connectivity Keyless Entry: Standard keyless entry and remote start (if equipped). 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 miles or 6 months, whichever comes first (depending on driving conditions). Engine Air Filter: Inspect every 15,000 miles, replace as needed or every 30,000 miles. Cabin Air Filter: Inspect every 15,000 miles, replace as needed or every 15,000-30,000 miles depending on environment. Spark Plugs: Platinum-tipped spark plugs: Inspect every 60,000 miles, replace as needed. Iridium-tipped are longer lasting. Fluid Specifications Engine Oil: SAE 5W-30, API Certified. API SN or newer recommended. Capacity: 4.7 US quarts (4.4 liters) with filter change. Transmission Fluid: Nissan Matic S or equivalent ATF. Capacity: Approx. 4.0 US quarts (3.8 liters) for drain and fill. Coolant: Nissan Super Coolant (Blue) or equivalent, 50/50 mixture with distilled water. Capacity: Approx. 9.3 US quarts (8.8 liters). Brake Fluid: DOT 3 or DOT 4 brake fluid. Known Issues Oil Leaks: Valve cover gasket and oil pan gasket leaks are common as the vehicle ages. HVAC Blend Door: HVAC blend door actuators can fail, causing temperature control issues. Suspension Components: Worn bushings, ball joints, and tie rod ends can lead to clunking noises and poor handling. ABS Sensors: ABS wheel speed sensors...