Market Position:
Premium Luxury Sedan
Target Audience:
Luxury car buyers seeking comfort, performance, and refinement.
Competitive Analysis:
Competed against established luxury marques such as BMW 7 Series, Mercedes-Benz S-Class, and Lexus LS.
Key Features:
Powerful V8 engine, advanced suspension technology, opulent interior, sophisticated styling.
Suspension System:
Active Suspension (optional on some models), Multi-link front and rear suspension for refined ride and handling.
Coverage Areas:
Complete service and repair information
Trim Level Coverage:
Covers all factory trim levels for the 2001 Infiniti Q45.
Page Count:
Digital Access (Yearly Subscription)
Manual Type:
Service and Repair Manual Software
License Type:
Officially Licensed, OE Material Derived
Format:
Online Software/Web-based
Access Method:
Web browser access on PC, Laptop, Smartphone, or Tablet.
Systems Covered:
Engine, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Body, Chassis, Fuel System, Exhaust System, Cooling System, Lubrication System, Restraints System
Wiring Diagrams:
Includes comprehensive electrical schematics for all major systems.
Body And Chassis:
Includes body panel repair, structural components, chassis alignment, and collision repair information.
HVAC:
Coverage includes refrigerant handling, compressor, evaporator, condenser, and climate control module diagnostics and repair.
Restraints System:
Information on airbag system diagnostics, replacement, and seatbelt mechanisms.
Procedures Included:
Diagnostics, Troubleshooting, Repair, Maintenance, Component Replacement, Wiring Diagrams, Specifications
Diagnostic Trouble Codes:
Provides OBD-II code definitions, causes, and diagnostic procedures.
Tire Rotation And Replacement:
Detailed procedures for tire rotation, balancing, and replacement.
Brake System Overhaul:
Procedures for brake pad replacement, rotor resurfacing/replacement, caliper service, and brake bleeding.
Technical Depth:
Comprehensive Factory-Derived Information, suitable for DIY and Professional use
Rebuild Procedures:
Detailed procedures for engine and transmission disassembly, inspection, and reassembly.
Diagnostic Tools:
Information compatible with Nissan's CONSULT diagnostic interface (or equivalent OBD-II scanners).
Engine Code:
VQ35DE (also known as VG35DE in some contexts, but VQ designation is common for this generation)
Engine Type:
3.5L V6 DOHC 24-valve
Horsepower:
240 hp @ 6400 rpm
Torque:
270 lb-ft @ 4800 rpm
Bore X Stroke:
3.50 x 3.23 inches (89.0 mm x 82.0 mm)
Fuel Delivery:
Multi-Point Fuel Injection (MPFI)
Ignition System:
Electronic Ignition (Coil-on-Plug)
Engine Control Module:
ECU (Specific Part Number varies)
Emission Controls:
Catalytic converter, oxygen sensors, secondary air injection system.
Block Material:
Aluminum Alloy
Head Material:
Aluminum Alloy
Wheelbase:
113.2 inches (2875 mm)
Length:
201.4 inches (5115 mm)
Width:
71.7 inches (1820 mm)
Height:
56.3 inches (1430 mm)
Curb Weight:
Approx. 3,825 lbs (1735 kg)
Gross Vehicle Weight Rating:
Typically around 4,800 lbs (2177 kg), check VIN plate for exact rating.
NHTSA Frontal Driver Rating:
Not directly available for this specific year/model via current public databases, but typical for luxury sedans of the era.
NHTSA Frontal Passenger Rating:
Not directly available for this specific year/model via current public databases, but typical for luxury sedans of the era.
Active Safety Features:
Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Traction Control System (TCS), Vehicle Dynamic Control (VDC)
Headlights:
Xenon HID headlights (optional/standard depending on trim), Auto-leveling feature.
Passive Safety Features:
Front Airbags, Side Airbags (optional/standard depending on trim), Pre-tensioning Seatbelts, Crumple Zones
Infotainment System:
Bose premium audio system, Navigation system (optional), CD player.
Driver Assistance Features:
Cruise Control, Optional parking sensors.
Connectivity Features:
Typically limited to analog inputs or early CD changers; no modern Bluetooth or USB connectivity natively.
Comfort Features:
Power adjustable seats with memory, heated seats, dual-zone automatic climate control, power moonroof.
Oil Change Interval:
Every 3,750 miles (6,000 km) or 3 months, or 7,500 miles (12,000 km) or 6 months with synthetic oil, whichever comes first (refer to manual for specific conditions).
Engine Coolant Replacement:
Initial 105,000 miles (168,000 km) or 7 years, then every 75,000 miles (120,000 km) or 5 years.
Spark Plug Replacement:
Approximately 105,000 miles (168,000 km) for iridium-tipped spark plugs.
Transmission Fluid Change Interval:
Every 30,000 miles (48,000 km) or 2 years under normal driving conditions; more frequently under severe conditions. Refer to manual.
Engine Oil Type:
API SG, SH, SJ, or ILSAC GF-II/GF-III certified SAE 5W-30 (check manual for specific viscosity under different temperature ranges).
Engine Oil Capacity:
Approx. 4.7 US quarts (4.4 liters) with filter change.
Brake Fluid Type:
SAE J1703 or FMVSS 116 DOT 3
Power Steering Fluid:
Nissan Genuine PSF (or equivalent Dexron III ATF in some cases, check manual).
Coolant Type:
Nissan Genuine Super Long Life Coolant (Blue) or equivalent API certified antifreeze/coolant.
Differential Fluid:
API GL-5 SAE 75W-90 (refer to manual for specific rear differential type, e.g., standard or limited-slip).
Known Issues:
Timing chain guides (VQ35DE), occasional electronic throttle control issues, power window regulators, and front strut mounts. Condensation within headlight housings.
Common Repairs:
Replacement of worn suspension bushings and ball joints, brake pad and rotor service, serpentine belt replacement.
Specific Component Failure:
ABS/VDC sensors can be prone to failure, leading to warning lights.
Brand Heritage:
Infiniti is Nissan's luxury vehicle division, established in 1989 to compete in the premium automotive market.
Model Evolution:
The Q45 represented Infiniti's flagship sedan. The 2001 model is part of the second generation (Y33 chassis), which debuted in 1996 and received a significant update for 1999 including the introduction of the VQ35DE engine and revised styling.
Production Period:
1990-2006 (for Q45 nameplate)
Manufacturing Location:
Japan (primarily)
