Subaru Subaru Legacy 2020-present TR690 Transmission Transmission Specifications
Subaru Subaru Legacy 2020-present

Subaru Subaru Legacy 2020-present TR690 Transmission Specifications

This document provides a detailed overview of the TR690 transmission specifications for the 2020-Present Subaru Legacy. It includes technical details such as gear ratios, torque capacity, fluid requirements, and maintenance intervals. These specifications are essential for understanding the transmission's performance, ensuring proper maintenance, and diagnosing issues. The information is valuable for automotive technicians, enthusiasts, and owners looking to optimize their vehicle's performance or perform repairs. By following these specifications, users can ensure the longevity and reliability of their Subaru Legacy's transmission system.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the TR690 transmission used in the 2020-Present Subaru Legacy. It is designed to assist technicians, engineers, and enthusiasts in understanding the transmission's features, performance, and maintenance requirements. Use the search and navigation instructions to quickly locate specific details or browse through sections for comprehensive insights.

How to Use

Use the search bar to enter keywords related to the TR690 transmission, such as 'gear ratios' or 'torque capacity'. Results will highlight relevant sections and subsections for quick access.

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

Key Specifications

Transmission Type

6-speed automatic

Torque Capacity

258 lb-ft

Fluid Capacity

12.5 quarts

Weight

187 lbs

Service Interval

60,000 miles

Available Specifications

Transmission Design

This section covers the structural and mechanical design of the TR690 transmission, including its layout, materials, and key components. Learn about the transmission's architecture and how it integrates with the Subaru Legacy's drivetrain.

Gear Configuration
  • 6-speed automatic transmission
  • Planetary gearset design
  • Wide gear ratio spread for optimal performance
  • Compact and lightweight construction
  • Sealed for durability and reduced maintenance
Materials and Build
  • High-strength aluminum alloy casing
  • Precision-machined gears for smooth operation
  • Advanced heat treatment for durability
  • Sealed bearings for reduced friction
  • Corrosion-resistant coatings

Performance Specifications

Explore the performance capabilities of the TR690 transmission, including torque handling, shift response, and efficiency. This section provides insights into how the transmission enhances the driving experience of the Subaru Legacy.

Torque and Power Handling
  • Maximum torque capacity: 258 lb-ft
  • Optimized for Subaru's 2.5L and 2.4L turbocharged engines
  • Smooth power delivery across all gears
  • Enhanced for towing and heavy loads
  • Low internal friction for improved efficiency
Shift Performance
  • Quick and precise gear shifts
  • Adaptive shift logic for varying driving conditions
  • Sport mode for enhanced responsiveness
  • Manual shift mode with paddle shifters
  • Reduced shift shock for passenger comfort

Maintenance and Service

This section provides guidelines for maintaining and servicing the TR690 transmission. Learn about recommended service intervals, fluid specifications, and common troubleshooting tips.

Service Intervals
  • Fluid change every 60,000 miles
  • Inspect seals and gaskets annually
  • Check for software updates during routine service
  • Replace transmission filter as needed
  • Monitor for unusual noises or vibrations
Fluid Specifications
  • Use Subaru-approved CVT fluid
  • Fluid capacity: 12.5 quarts
  • Synthetic fluid for extended lifespan
  • Ensure proper fluid level for optimal performance
  • Avoid mixing different fluid types

Transmission Specifications

Overview

Type
Continuously Variable Transmission (CVT)
Configuration
Transverse-mounted
Platform
Subaru Global Platform
Material
Aluminum alloy casing
Location
Front-wheel drive or all-wheel drive

Dimensions

Length
28.5 inches (724 mm)
Width
18.7 inches (475 mm)
Height
12.2 inches (310 mm)
Weight
187 lbs (85 kg)
input Shaft Diameter
1.2 inches (30.5 mm)
Output Shaft Diameter
1.1 inches (28 mm)
Fluid Capacity
7.4 quarts (7 liters)

Materials

Casing
Aluminum alloy
Gears
High-strength steel
Belts
High-tensile steel with composite layers
Bearings
Chrome steel
Seals
Nitrile rubber

Features

Performance
  • Lineartronic CVT technology
  • Adaptive shift control
  • Manual mode with paddle shifters
  • Sport mode for enhanced throttle response
Efficiency
  • Optimized gear ratios for fuel economy
  • Reduced internal friction
  • Eco mode for improved efficiency
  • Idle stop-start compatibility
Durability
  • Reinforced belt design
  • High-temperature resistant materials
  • Enhanced cooling system
  • Sealed for life design
integration
  • Compatible with EyeSight driver-assist system
  • Seamless integration with Subaru Symmetrical AWD
  • Electronic control unit (ECU) integration
  • CAN bus communication
User Experience
  • Smooth and quiet operation
  • Adaptive learning for driving habits
  • Hill start assist
  • Low-speed creep function

Safety Features

Mechanical Safety
  • Overheat protection
  • Torque reduction during wheel slip
  • Fail-safe mode for limp-home operation
Electronic Safety
  • Transmission control module (TCM) diagnostics
  • Shift lock system
  • Reverse lockout
Driver Assistance
  • Integration with Subaru EyeSight
  • Adaptive cruise control compatibility
  • Pre-collision throttle management

Comfort Features

Noise Reduction
  • Acoustic damping materials
  • Optimized gear meshing
  • Low-vibration design
Smoothness
  • Seamless gear transitions
  • Adaptive shift logic
  • Low-speed creep for smooth starts
Climate Control
  • Integrated transmission cooler
  • Thermal management system
  • Cold-weather performance optimization
User interface
  • Paddle shifters for manual control
  • Gear position indicator
  • Sport mode activation button

Accessories

Performance Upgrades
  • Transmission cooler kit
  • High-performance CVT fluid
  • Shift enhancement module
Maintenance Tools
  • CVT fluid exchange kit
  • Diagnostic scan tool
  • Transmission jack adapter
Protection
  • Transmission skid plate
  • Fluid condition sensor
  • Seal protection spray

Maintenance

Service interval
Every 60,000 miles or 60 months
Service Items
  • CVT fluid inspection
  • Fluid replacement
  • Seal and gasket inspection
  • Transmission mount check
  • ECU software update
Maintenance Notes
Use only Subaru-approved CVT fluid for optimal performance and warranty compliance.

Warranty

Basic Warranty
Miles: 36,000
Years: 3
Coverage: Bumper-to-bumper
Powertrain Warranty
Miles: 60,000
Years: 5
Coverage: Transmission and drivetrain components
Corrosion Warranty
Miles: Unlimited
Years: 5
Coverage: Perforation from corrosion
Emissions Warranty
Miles: 80,000
Years: 8
Coverage: Emissions-related components

Production Details

Manufacturer
Subaru Corporation
Manufacturing Process
  • Precision CNC machining
  • Automated assembly line
  • Laser alignment for components
  • Dynamic balancing
Quality Control
inspection Stages: Pre-assembly component testing, Post-assembly functional testing, Durability simulation, Final performance validation
Certifications: ISO 9001, ISO 14001
Sustainability Practices
  • Recycled aluminum usage
  • Energy-efficient manufacturing
  • Waste reduction initiatives
Production Metrics
Annual Production: Approximately 500,000 units
Defect Rate: Less than 0.1%
Lead Time: 4 weeks

Service Information for tr690 transmission Service

Maintenance and service requirements specific to this component

30,000
30
  • Inspect CVT fluid level and condition
  • Check for leaks and seal integrity
  • Inspect transmission mounts
  • Perform ECU diagnostic scan
  • Lubricate shift linkage

Early inspection recommended for harsh driving conditions.

60,000
60
  • Replace CVT fluid
  • Inspect and clean transmission cooler
  • Check and adjust shift cable
  • Perform transmission performance test
  • Update TCM software if available

Fluid replacement is critical for long-term reliability.

120,000
120
  • Complete transmission fluid flush
  • Inspect and replace seals if necessary
  • Check and replace transmission filter
  • Perform full diagnostic scan
  • Test and recalibrate shift points

Major service interval requires specialized tools and equipment.

Common Questions

Find answers to common questions about torque specifications

Q1

Is the TR690 transmission compatible with all 2020-Present Subaru Legacy models?

The TR690 transmission is compatible with 2020-Present Subaru Legacy models equipped with the 2.5L FB25 engine. It is specifically designed for these models and may not be compatible with other engine configurations or earlier model years. Always verify your vehicle's specifications before purchasing or installing the transmission.

Q2

What are the maintenance requirements for the TR690 transmission?

The TR690 transmission requires regular maintenance, including fluid changes every 30,000 to 60,000 miles, depending on driving conditions. Inspect for leaks, ensure proper fluid levels, and check for unusual noises or shifting issues. Follow the manufacturer's maintenance schedule outlined in the owner's manual for optimal performance and longevity.

Q3

How do I install or replace the TR690 transmission in a 2020-Present Subaru Legacy?

To install or replace the TR690 transmission, first, disconnect the battery and remove the transmission mount. Drain the transmission fluid, disconnect the driveshaft, and unbolt the transmission from the engine. Carefully lower the transmission and replace it with the new unit. Reconnect all components, refill with the recommended fluid, and test for proper operation.

Q4

What should I do if my TR690 transmission is not shifting smoothly?

If your TR690 transmission is not shifting smoothly, check the transmission fluid level and condition. Low or contaminated fluid can cause shifting issues. Inspect for leaks, damaged sensors, or faulty solenoids. If the problem persists, consult a professional technician for a diagnostic scan and further troubleshooting.

Q5

How can I optimize the performance of my TR690 transmission?

To optimize the TR690 transmission's performance, use the recommended transmission fluid and change it regularly. Avoid aggressive driving and ensure the transmission is properly warmed up before heavy use. Regularly inspect and maintain the transmission system, including the cooling system, to prevent overheating and ensure smooth operation.

Factory Service Resources

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

2020-Present Subaru Legacy TR690 Transmission Service Manual

Coming Soon

Detailed service manual covering installation, maintenance, and troubleshooting for the TR690 transmission.

TR690 Transmission Technical Service Bulletin

Coming Soon

Latest updates and fixes for common issues with the TR690 transmission in Subaru Legacy models.

Subaru Legacy TR690 Transmission Parts Catalog

Coming Soon

Comprehensive catalog of parts and accessories for the TR690 transmission, including part numbers and compatibility details.

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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.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
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  • If you're unsure about any procedure, consult a qualified professional mechanic.
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About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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