🏷️ Basic Information

Make:

Infiniti

Model:

M45

Year:

2009

Generation Code:

Y50 (Second Generation)

Chassis Code:

Y50

Engine Code:

VK45DE

👋 Introduction

Market Position:

Luxury Full-Size Sedan

Competitive Analysis:

Competed directly with vehicles like the Lexus GS, BMW 5 Series, and Mercedes-Benz E-Class, often offering a blend of performance, luxury, and distinctive styling.

Key Features:

Powerful V8 Engine, Premium Interior Materials, Advanced Technology Features, Comfortable Ride, Refined Handling

📋 Manual Details

Coverage Areas:

Complete Service and Repair Information

Page Count Estimated:

Extensive (Digital Format - varies with access)

Manual Type:

Official Factory Service Manual (Licensed Digital Software)

Language:

English

Format:

Online Software / Web-Based Access

📖 Manual Coverage

Systems Covered:

Engine Mechanical, Engine Electrical, Fuel System, Cooling System, Lubrication System, Exhaust System, Drivetrain (Transmission, Axles, Driveshaft), Suspension (Front & Rear), Steering System, Brakes (ABS, EBD), HVAC (Heating, Ventilation, Air Conditioning), Electrical System (Wiring Diagrams, ECUs, Sensors), Body Control Modules, Exterior & Interior Trim, Body & Chassis, Safety Systems (Airbags, Seatbelts), Audio & Navigation Systems, Cruise Control, Pre-Delivery Inspection (PDI)

Procedures Included:

Scheduled Maintenance, Troubleshooting, Diagnostics, Component Removal & Installation, Repair Procedures, Overhaul Procedures, Torque Specifications, Fluid Capacities & Specifications, Wiring Harness Repair, Diagnostic Trouble Code (DTC) Procedures, Adjustment Procedures, Lubrication Procedures, Technical Specifications, Spec Sheets

Technical Depth:

Comprehensive Factory-Level Detail, Suitable for Professional Technicians and Advanced DIYers

📊 Manual Specifications

File Format:

Web-Based Application (Accessible via Browser)

Print Quality:

N/A (Digital Format)

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Naturally Aspirated V8

Engine Displacement:

4.5 Liters (4494 cc)

Engine Code:

VK45DE

Horsepower:

325 hp @ 6400 rpm

Torque:

336 lb-ft @ 4400 rpm

Fuel System:

Electronic Fuel Injection (EFI)

Fuel Type:

Premium Unleaded Gasoline (91 Octane Recommended)

Valve Train:

DOHC (Dual Overhead Camshafts), 4 Valves per Cylinder

Block Material:

Aluminum Alloy

Cylinder Head Material:

Aluminum Alloy

Compression Ratio:

9.6:1

🔧 Transmission

Transmission Type:

5-Speed Automatic with Manual Shift Mode

Optional Transmission:

N/A (5-Speed Auto standard)

Transmission Features:

Electronically Controlled, AI (Artificial Intelligence) Shift Control, Downshift Rev Matching

Transmission Fluid Type:

Nissan Matic S (or equivalent DEXRON-III H)

Transmission Fluid Capacity Approx:

10.5 Quarts (9.9 Liters) (Drain and Fill)

📐 Dimensions

Length:

192.7 inches (4895 mm)

Width:

71.7 inches (1821 mm)

Height:

58.7 inches (1491 mm)

Wheelbase:

112.2 inches (2850 mm)

Front Track:

60.4 inches (1534 mm)

Rear Track:

60.4 inches (1534 mm)

Curb Weight Approx:

3959 lbs (1796 kg)

Gross Vehicle Weight Rating Gvwr Approx:

5093 lbs (2310 kg)

Towing Capacity:

Not Specified/Recommended

Standard Wheel Size:

18 x 7.5 inches

Optional Wheel Size:

19 x 8.0 inches (Front) / 19 x 9.0 inches (Rear)

Standard Tire Size:

245/45R18

Optional Tire Size:

245/40R19 (Front) / 275/35R19 (Rear)

Bolt Pattern:

5x114.3 mm (5x4.5 inches)

Center Bore:

66.1 mm

🛡️ Safety Features

NHTSA Front Impact Rating:

5-Star Driver / 5-Star Passenger (for 2009 model)

IIHS Moderate Overlap Front Rating:

Good (for 2009 model)

Active Safety Features:

Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist (BA), Traction Control System (TCS), Vehicle Dynamic Control (VDC)

Passive Safety Features:

Dual-Stage Front Airbags, Front Side-Impact Airbags, Roof-Mounted Curtain Side-Impact Airbags, Active Head Restraints, Pretensioning Seatbelts

💡 Technology Features

Infotainment System:

Infiniti Navigation System with Voice Recognition, 7-inch Color LCD Display, Bose Premium Audio System (11-speaker optional), Music Box hard drive, Compact Flash (CF) card slot for music storage.

Driver Assistance Features:

Intelligent Cruise Control (ICC), Lane Departure Warning (LDW), Lane Keep Assist (LKA) (optional, depending on trim and package), Pre-Collision System (PCS) (optional)

Connectivity Features:

Bluetooth Hands-Free Phone System, USB Connectivity (later models/packages)

Convenience Features:

Smart Key System with Push Button Ignition, Power Sliding Glass Moonroof, Rain-Sensing Front Wipers, Auto-Dimming Rearview Mirror with HomeLink

🔧 Maintenance

Oil Change Interval:

Every 5,000 - 7,500 miles (12 months), or as indicated by the Intelligent Maintenance System (IMS).

Engine Air Filter Replacement:

Every 30,000 - 45,000 miles (or sooner if driving in dusty conditions).

Cabin Air Filter Replacement:

Every 15,000 - 20,000 miles (or annually).

Spark Plug Replacement:

Approximately 100,000 miles (Platinum/Iridium tipped).

Transmission Fluid Change:

Every 60,000 - 80,000 miles (or as indicated by severe service conditions).

Engine Oil Type:

SAE 5W-30

Engine Oil Capacity:

5.9 Quarts (5.6 Liters) with filter change

Coolant Type:

Nissan Genuine Super Long Life Coolant (Blue) or equivalent mixture of 50/50 P-OAT/HOAT coolant and distilled water.

Power Steering Fluid Type:

Nissan Genuine PSF or equivalent DEXRON-III compatible fluid.

Brake Fluid Type:

SAE J1703 or FMVSS 116 DOT 3

Known Issues:

Occasional reports of HVAC blower motor failure, minor oil leaks from valve covers or oil pans, and potential issues with the infotainment system or navigation. Some early models experienced front strut bearing wear. The VK45DE engine is generally robust, but proper maintenance is crucial.

📚 Vehicle History

Brand Heritage:

Infiniti, Nissan's luxury division, established in 1989, aimed to compete with established luxury marques by offering performance-oriented vehicles with innovative technology and refined craftsmanship.

Model Evolution:

The M45, part of the M-series, evolved from the previous JDM Nissan President and the M35/M45 (Y50 platform). The second generation (Y50) received a significant refresh for 2009, including updated styling, interior enhancements, and improved technology.

Production Years:

2003-2010 (Y50 platform)

Manufacturing Location:

Japan

🏆 Awards & Recognition

Recognized Awards:

While specific awards for the 2009 model year might vary, the M series generally received positive reviews for its performance, luxury, and value proposition within its segment during its production run.