Infiniti FX45 2003-2008 5R05 Transmission Transmission Specifications
Infiniti FX45 2003-2008

Infiniti FX45 2003-2008 5R05 Transmission Specifications

This document provides detailed technical specifications for the 5R05 transmission used in the 2003-2008 Infiniti FX45. It includes information on gear ratios, torque capacity, fluid requirements, and maintenance intervals. These specifications are essential for mechanics, enthusiasts, and owners looking to understand the transmission's performance, ensure proper maintenance, or diagnose issues. The data 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 transmission's design and operation.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the 5R05 transmission used in the 2003-2008 Infiniti FX45. It is designed to assist technicians, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance characteristics. Use this guide to navigate through sections, search for specific details, and reference key specifications quickly.

How to Use

Use the search functionality to locate specific terms or phrases within the document. Enter keywords related to the 5R05 transmission, such as 'gear ratios' or 'fluid capacity,' to find relevant information quickly.

Navigate through the document using the section titles and subsections. Each major section is organized into detailed subsections, making it easy to find specific technical details about the 5R05 transmission.

Key Specifications

Transmission Type

5-speed automatic

Maximum Torque

400 lb-ft

Fluid Capacity

9.5 quarts

Gear Ratios

3.54:1 to 0.75:1

Weight

180 lbs

Available Specifications

Transmission Design and Features

This section covers the design principles and key features of the 5R05 transmission, including its construction, gear configuration, and advanced technologies that enhance performance and durability.

Gear Configuration
  • 5-speed automatic transmission
  • Wide gear ratio spread for optimal performance
  • Adaptive shift control for smooth gear changes
  • Lock-up torque converter for improved efficiency
  • Sequential manual shift mode for driver control
Construction and Materials
  • Aluminum alloy casing for reduced weight
  • High-strength steel gears for durability
  • Advanced sealing technology to prevent leaks
  • Integrated cooling system for temperature management

Performance Specifications

This section provides detailed performance metrics for the 5R05 transmission, including gear ratios, torque capacity, and shift response times.

Gear Ratios
  • 1st gear: 3.54:1
  • 2nd gear: 2.14:1
  • 3rd gear: 1.45:1
  • 4th gear: 1.00:1
  • 5th gear: 0.75:1
  • Reverse gear: 3.00:1
Torque and Power Handling
  • Maximum torque capacity: 400 lb-ft
  • Designed for V8 engines up to 320 hp
  • Optimized for high-performance driving conditions
  • Robust clutch packs for reliable power transfer

Maintenance and Service

This section outlines the maintenance requirements and service intervals for the 5R05 transmission, including fluid specifications and common troubleshooting tips.

Fluid Specifications
  • Recommended fluid: Nissan Matic S ATF
  • Fluid capacity: 9.5 quarts (with torque converter)
  • Fluid change interval: Every 60,000 miles
  • Use of incorrect fluid may void warranty
Common Issues and Solutions
  • Delayed shifting: Check fluid level and condition
  • Transmission overheating: Inspect cooling system
  • Unusual noises: Verify torque converter operation
  • Check for software updates from the manufacturer

Transmission Specifications

Overview

Type
5-speed automatic
Configuration
Longitudinal
Platform
FM platform
Material
Aluminum alloy casing
Location
Rear-wheel drive (RWD) or All-wheel drive (AWD)

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
Carbon fiber composite
Seals
Viton rubber
Cooling Lines
Stainless steel

Features

Performance
  • Adaptive shift control
  • Manual shift mode
  • Sport mode
  • Smooth torque delivery
Durability
  • Reinforced gear sets
  • High-capacity cooling system
  • Corrosion-resistant materials
Efficiency
  • Optimized gear ratios
  • Reduced internal friction
  • Efficient fluid circulation
Technology
  • Electronic control unit (ECU)
  • Integrated temperature sensors
  • Fail-safe limp mode
Drivability
  • Seamless gear shifts
  • Low noise operation
  • Enhanced throttle response

Safety Features

Fail Safe
  • Limp mode activation
  • Overheat protection
  • Fluid pressure monitoring
Structural
  • Reinforced casing
  • Impact-resistant mounts
Electronic
  • ECU diagnostics
  • Shift lock system

Comfort Features

Noise Reduction
  • Precision gear machining
  • Vibration dampening mounts
Shift Quality
  • Smooth transition between gears
  • Adaptive shift logic
Temperature Control
  • Integrated cooling system
  • Thermal management
User Experience
  • Intuitive shift patterns
  • Sport mode for dynamic driving

Accessories

Cooling
  • Transmission cooler
  • Cooling line kit
  • Thermostatic valve
Mounting
  • Reinforced transmission mount
  • Vibration dampeners
  • Alignment tools
Maintenance
  • Fluid exchange kit
  • Filter replacement kit
  • Diagnostic scanner

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Fluid and filter replacement
  • Seal inspection
  • Clutch pack wear check
  • Cooling system inspection
  • ECU diagnostics
Notes
Use only manufacturer-recommended transmission fluid for optimal performance.

Warranty

Basic
Miles: 60,000
Years: 5
Coverage: Parts and labor
Powertrain
Miles: 100,000
Years: 7
Coverage: Transmission components
Corrosion
Miles: Unlimited
Years: 7
Coverage: Casing and seals
Extended
Miles: 120,000
Years: 10
Coverage: Optional extended coverage

Production Details

Manufacturer
JATCO
Manufacturing Process
  • Precision CNC machining
  • Heat treatment of gears
  • Automated assembly
Quality Control
Testing: Durability testing, Shift pattern validation, Temperature stress tests
Standards: ISO 9001 certified, OEM specifications
Sustainability
  • Recyclable materials
  • Energy-efficient production
  • Waste reduction initiatives
Production Metrics
Annual Output: 150,000 units
Defect Rate: 0.1%
Lead Time: 6 weeks

Service Information for 5r05 transmission Service

Maintenance and service requirements specific to this component

30,000
24
  • Transmission fluid replacement
  • Filter replacement
  • Seal inspection
  • Cooling system check
  • ECU diagnostics

Use only manufacturer-recommended fluid for optimal performance.

60,000
48
  • Clutch pack inspection
  • Fluid flush
  • Mounting hardware check
  • Shift quality assessment
  • Temperature sensor calibration

Inspect for signs of wear or leaks.

100,000
84
  • Complete transmission overhaul
  • Replace worn components
  • Cooling system upgrade
  • ECU software update
  • Performance testing

Major service requires specialized tools and expertise.

Common Questions

Find answers to common questions about torque specifications

Q1

What are the compatibility details for the 5R05 transmission in the 2003-2008 Infiniti FX45?

The 5R05 transmission is specifically designed for the 2003-2008 Infiniti FX45, featuring a 5-speed automatic configuration with rear-wheel drive (RWD) or all-wheel drive (AWD) compatibility. It is engineered to handle the 4.5L V8 engine's torque output of up to 320 lb-ft. Ensure the transmission control module (TCM) software is updated to the latest version for optimal performance and compatibility with modern diagnostic tools.

Q2

What are the maintenance requirements for the 5R05 transmission?

The 5R05 transmission requires regular maintenance to ensure longevity. Replace the transmission fluid and filter every 30,000 to 60,000 miles, depending on driving conditions. Inspect for leaks, worn seals, and damaged components during service. Use only Nissan Matic S or equivalent ATF for fluid replacement. Regularly check the transmission mount and driveshaft for wear to prevent vibration or misalignment issues.

Q3

How do I install or replace the 5R05 transmission in my Infiniti FX45?

To install or replace the 5R05 transmission, first, disconnect the battery and remove the driveshaft, exhaust components, and crossmember. Support the engine with a jack and remove the transmission mount. Disconnect the wiring harness, cooler lines, and shift linkage. Lower the transmission using a jack and remove it from the vehicle. Install the new or rebuilt transmission by reversing the steps, ensuring proper alignment and torque specifications for all bolts and connections.

Q4

What are common troubleshooting steps for the 5R05 transmission?

If the 5R05 transmission exhibits issues like slipping, harsh shifting, or no engagement, start by checking the fluid level and condition. Low or contaminated fluid can cause performance problems. Use a diagnostic scanner to check for error codes in the TCM. Inspect the wiring harness and connectors for damage. If no issues are found, perform a pressure test to identify internal faults such as worn clutches or valve body malfunctions.

Q5

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

To optimize the 5R05 transmission, ensure regular fluid changes with the recommended ATF. Upgrade to a high-performance transmission cooler if towing or driving in extreme conditions. Consider reprogramming the TCM for improved shift points and responsiveness. Avoid aggressive driving and excessive load to reduce wear. Regularly inspect and maintain the drivetrain components to ensure smooth operation and prevent premature failure.

Factory Service Resources

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

Infiniti FX45 5R05 Transmission Service Manual

Coming Soon

Detailed service manual covering disassembly, repair, and reassembly procedures for the 5R05 transmission.

Technical Service Bulletin for 5R05 Transmission Updates

Coming Soon

TSB outlining software updates and common fixes for the 5R05 transmission in the 2003-2008 Infiniti FX45.

Infiniti FX45 Transmission Parts Catalog

Coming Soon

Comprehensive catalog of OEM and aftermarket parts for the 5R05 transmission, including seals, gaskets, and rebuild kits.

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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

Automotive Technical Specialist

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