Infiniti Q45 2002-2006 5R05 Transmission Transmission Specifications
Infiniti Q45 2002-2006

Infiniti Q45 2002-2006 5R05 Transmission Specifications

This document provides detailed technical specifications for the 5R05 transmission used in the 2002-2006 Infiniti Q45. It includes critical data such as gear ratios, torque capacity, fluid type, and maintenance intervals. These specifications are essential for mechanics, enthusiasts, and owners seeking to understand the transmission's performance, ensure proper maintenance, or diagnose issues. The information is sourced from official service manuals and technical guides, ensuring accuracy and reliability. Whether you're performing routine maintenance, planning upgrades, or troubleshooting, this resource offers valuable insights into the 5R05 transmission's design and operation.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the 5R05 transmission used in the 2002-2006 Infiniti Q45. It is designed to assist technicians, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance characteristics. Use the search and navigation instructions to quickly locate specific details or browse through the sections for a comprehensive understanding of the 5R05 transmission.

How to Use

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Scroll through the sections or use the table of contents to jump to specific topics. Each section is organized into subsections with detailed technical points for easy reference.

Key Specifications

Transmission Type

5-speed automatic

Gear Ratios

3.540:1 (1st) to 0.834:1 (5th)

Fluid Capacity

9.5 quarts

Torque Handling

Up to 333 lb-ft

Weight

Approx. 180 lbs

Available Specifications

Transmission Design

This section covers the design and engineering of the 5R05 transmission, including its construction, materials, and layout. Learn about the transmission's architecture and how it integrates with the Infiniti Q45's drivetrain.

Construction and Materials
  • Aluminum alloy casing for reduced weight
  • Five-speed automatic configuration
  • High-strength steel gears for durability
  • Advanced hydraulic control system
  • Sealed design for minimal maintenance
  • Compact layout for efficient packaging
Integration with Drivetrain
  • Direct bolt-on compatibility with VK45DE engine
  • Electronic control unit (ECU) integration
  • Adaptive shift logic for smooth performance
  • Rear-wheel drive configuration
  • Torque converter with lock-up clutch
  • Sealed transmission fluid system

Performance Specifications

Explore the performance capabilities of the 5R05 transmission, including gear ratios, shift patterns, and torque handling. This section provides insights into how the transmission enhances the driving experience of the Infiniti Q45.

Gear Ratios
  • 1st gear: 3.540:1
  • 2nd gear: 2.264:1
  • 3rd gear: 1.471:1
  • 4th gear: 1.000:1
  • 5th gear: 0.834:1
  • Reverse gear: 2.370:1
Shift Patterns
  • Adaptive shift logic for varying driving conditions
  • Smooth upshifts and downshifts
  • Manual mode for driver control
  • Sport mode for enhanced performance
  • Quick response to throttle input
  • Optimized for fuel efficiency

Maintenance and Service

This section provides guidelines for maintaining and servicing the 5R05 transmission. Learn about fluid requirements, inspection intervals, and common troubleshooting tips to ensure longevity and reliability.

Fluid Requirements
  • Recommended fluid: Nissan Matic S ATF
  • Fluid capacity: 9.5 quarts (including torque converter)
  • Fluid change interval: Every 60,000 miles
  • Use of synthetic fluid for improved performance
  • Fluid level check procedure
  • Signs of fluid degradation
Inspection and Troubleshooting
  • Regular inspection of transmission mounts
  • Check for leaks around seals and gaskets
  • Diagnostic scan for error codes
  • Common issues: delayed shifts, slipping gears
  • Professional servicing recommendations
  • DIY maintenance tips

Transmission Specifications

Overview

Type
5-speed automatic
Configuration
Longitudinal
Platform
FR-L platform
Material
Aluminum alloy casing
Location
Rear-wheel drive configuration

Dimensions

Length
28.5 inches (724 mm)
Width
22.8 inches (579 mm)
Height
18.3 inches (465 mm)
Weight
187 lbs (85 kg)
input Shaft Diameter
1.2 inches (30.5 mm)
Output Shaft Diameter
1.5 inches (38.1 mm)
Fluid Capacity
9.8 quarts (9.3 liters)

Materials

Casing
Aluminum alloy
Gears
Hardened steel
Clutch Packs
Composite friction materials
Seals
Viton rubber
Sensors
Stainless steel and plastic composites

Features

Performance
  • Adaptive shift control
  • Manual shift mode
  • Smooth torque converter lockup
  • Quick downshift capability
Durability
  • Reinforced gear sets
  • High-capacity cooling system
  • Robust clutch design
Efficiency
  • Optimized gear ratios
  • Reduced internal friction
  • Efficient fluid circulation
Technology
  • Electronic control module
  • Integrated temperature sensors
  • CAN bus communication
Safety
  • Fail-safe mode
  • Overheat protection
  • Torque reduction during slip

Safety Features

Fail Safe
  • Limps home mode
  • Reduced power output
Overheat Protection
  • Automatic cooling activation
  • Temperature warning system
Torque Management
  • Slip detection
  • Torque reduction during wheel spin

Comfort Features

Shift Quality
  • Smooth gear transitions
  • Adaptive shift patterns
Noise Reduction
  • Precision gear machining
  • Vibration dampening mounts
Drivability
  • Seamless acceleration
  • Responsive downshifts
User interface
  • Sport mode selection
  • Manual shift override

Accessories

Cooling
  • Transmission cooler
  • Auxiliary fan
  • Temperature gauge
Performance
  • Shift kit
  • High-capacity torque converter
  • Upgraded clutch packs
Maintenance
  • Fluid exchange kit
  • Filter replacement kit
  • Seal repair kit

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Fluid and filter replacement
  • Seal inspection
  • Clutch pack wear check
  • Sensor calibration
  • Shift quality assessment
Maintenance Notes
Use only Nissan Matic-S or equivalent fluid. Avoid overheating conditions.

Warranty

Basic
Miles: 36,000
Years: 3
Coverage: Parts and labor
Powertrain
Miles: 60,000
Years: 5
Coverage: Transmission components
Corrosion
Miles: Unlimited
Years: 7
Coverage: Perforation only
Emissions
Miles: 80,000
Years: 8
Coverage: Emission-related components

Production Details

Manufacturer
Jatco Ltd.
Manufacturing Process
  • Precision CNC machining
  • Heat treatment of gears
  • Automated assembly
  • Rigorous testing
Quality Control
inspection: 100% component testing
Tolerance: ±0.001 inches
Durability Testing: 500,000 cycle simulation
Sustainability Practices
  • Recycled aluminum usage
  • Low-emission manufacturing
  • Waste reduction programs
Production Metrics
Units Per Year: 150,000
Defect Rate: 0.02%
Lead Time: 6 weeks

Service Information for 5r05 transmission Service

Maintenance and service requirements specific to this component

30,000
24
  • Fluid and filter replacement
  • Seal and gasket inspection
  • Shift quality assessment
  • Sensor functionality check
  • Cooling system inspection

Use only manufacturer-recommended fluids.

60,000
48
  • Complete fluid flush
  • Clutch pack wear inspection
  • Valve body cleaning
  • Torque converter check
  • Electronic control module diagnostics

Requires specialized diagnostic tools.

100,000
84
  • Transmission overhaul
  • Clutch pack replacement
  • Seal and gasket replacement
  • Torque converter rebuild
  • Full system recalibration

Recommended for high-mileage vehicles or severe usage.

Common Questions

Find answers to common questions about torque specifications

Q1

Is the 5R05 transmission compatible with other Infiniti models?

The 5R05 transmission is specifically designed for the 2002-2006 Infiniti Q45 and is not directly compatible with other Infiniti models. It features a 5-speed automatic configuration with unique gear ratios and torque specifications tailored for the Q45's V8 engine. Always verify compatibility with your vehicle's VIN before considering any transmission swaps or replacements.

Q2

What are the maintenance requirements for the 5R05 transmission?

The 5R05 transmission requires regular maintenance to ensure optimal performance. This includes fluid changes every 30,000 to 60,000 miles, depending on driving conditions. Use only manufacturer-recommended ATF (Automatic Transmission Fluid) to avoid damage. Inspect for leaks, worn seals, and solenoid issues periodically. Adhering to the maintenance schedule in the owner's manual is crucial for longevity.

Q3

How do I replace the 5R05 transmission in my Infiniti Q45?

Replacing the 5R05 transmission involves several steps: 1) Disconnect the battery and drain the transmission fluid. 2) Remove the driveshaft, exhaust components, and crossmember. 3) Disconnect wiring harnesses and shift linkage. 4) Support the transmission with a jack and remove mounting bolts. 5) Carefully lower and remove the transmission. Installation is the reverse process. Ensure proper alignment and torque specifications during reassembly.

Q4

What are common troubleshooting steps for the 5R05 transmission?

Common issues with the 5R05 transmission include rough shifting, slipping gears, and delayed engagement. Start by checking the transmission fluid level and condition. Inspect for error codes using an OBD-II scanner. Test the solenoids and pressure sensors. If problems persist, consult a professional for a thorough diagnostic, as internal components like the valve body or torque converter may require attention.

Q5

How can I optimize the performance of my 5R05 transmission?

To optimize the 5R05 transmission's performance, ensure regular fluid changes with the correct ATF. Upgrade to a high-performance transmission cooler if towing or driving in hot climates. Consider reprogramming the transmission control module (TCM) for smoother shifts and improved responsiveness. Avoid aggressive driving and ensure the engine is properly tuned, as it directly impacts transmission performance.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

2002-2006 Infiniti Q45 Service Manual

Coming Soon

Comprehensive guide covering maintenance, repair, and troubleshooting for the 5R05 transmission and other vehicle systems.

Technical Service Bulletin: 5R05 Transmission Updates

Coming Soon

Details software updates and common fixes for the 5R05 transmission, including shift quality improvements.

Infiniti Q45 Transmission Parts Catalog

Coming Soon

Complete catalog of OEM and aftermarket parts for the 5R05 transmission, including seals, gaskets, and solenoids.

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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