Subaru Subaru Ascent 2019-present TR690 Transmission Specifications
This document provides a detailed overview of the TR690 transmission specifications for the 2019-Present Subaru Ascent. 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 potential issues. The information is valuable for automotive technicians, enthusiasts, and owners looking to optimize their vehicle's performance and longevity. Whether you're performing routine maintenance, troubleshooting, or considering upgrades, this guide serves as a comprehensive resource for all things related to the TR690 transmission in the Subaru Ascent.
Overview Specifications
This document provides detailed specifications and technical information about the TR690 transmission used in the 2019-Present Subaru Ascent. 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.
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Key Specifications
Transmission Type
8-speed CVT
Gear Ratio Range
3.70 - 0.60
Weight
187 lbs (85 kg)
Maximum Torque Capacity
277 lb-ft (375 Nm)
Fluid Capacity
9.5 quarts (9 liters)
Available Specifications
Transmission Design
This section covers the structural and functional design of the TR690 transmission, including its layout, materials, and integration with the Subaru Ascent's drivetrain.
Transmission Design
This section covers the structural and functional design of the TR690 transmission, including its layout, materials, and integration with the Subaru Ascent's drivetrain.
Gear Configuration
- 8-speed automatic transmission
- Chain-driven continuously variable transmission (CVT)
- Wide gear ratio range for improved efficiency
- Adaptive shift control for smooth performance
- Integrated torque converter
- Compact design for better packaging
Materials and Construction
- High-strength aluminum alloy casing
- Lightweight components for reduced weight
- Durable chain and pulley system
- Advanced lubrication system for longevity
- Sealed design to prevent contamination
Performance Features
Explore the performance-enhancing features of the TR690 transmission, including its responsiveness, efficiency, and adaptability to various driving conditions.
Performance Features
Explore the performance-enhancing features of the TR690 transmission, including its responsiveness, efficiency, and adaptability to various driving conditions.
Driving Modes
- Standard, Sport, and Manual modes
- Adaptive shift logic for dynamic driving
- Hill descent control integration
- Enhanced traction control compatibility
- Customizable shift points via paddle shifters
Efficiency and Fuel Economy
- Optimized gear ratios for fuel efficiency
- Reduced internal friction for better performance
- Eco-mode for improved mileage
- Start-stop system compatibility
- Low rolling resistance design
Maintenance and Durability
Learn about the maintenance requirements and durability features of the TR690 transmission, ensuring long-term reliability and performance.
Maintenance and Durability
Learn about the maintenance requirements and durability features of the TR690 transmission, ensuring long-term reliability and performance.
Maintenance Intervals
- Fluid change recommended every 60,000 miles
- Regular inspection of chain and pulleys
- Seal and gasket checks during service
- Software updates for adaptive control
- Filter replacement as needed
Durability Features
- Robust construction for heavy-duty use
- Thermal management system for overheating prevention
- Corrosion-resistant materials
- Shock-absorbing mounts for vibration reduction
- Extended warranty coverage options
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Transmission Specifications
Overview
- Type
- Continuously Variable Transmission (CVT)
- Configuration
- Transverse-mounted
- Platform
- Subaru Global Platform
- Material
- Aluminum alloy casing
- Location
- Front-engine, all-wheel-drive configuration
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 18.7 inches (475 mm)
- Height
- 14.2 inches (361 mm)
- Weight
- 187 lbs (85 kg)
- input Shaft Diameter
- 1.2 inches (30.5 mm)
- Output Shaft Diameter
- 1.4 inches (35.6 mm)
- Fluid Capacity
- 10.3 quarts (9.75 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- High-strength steel
- Belts
- Carbon-reinforced polymer
- 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
- Reduced internal friction
- Eco mode for fuel savings
- Idle stop-start system compatibility
- Durability
-
- High-tensile steel components
- Reinforced belt design
- Advanced cooling system
- Sealed for life fluid system
- integration
-
- Seamless integration with Subaru Symmetrical AWD
- Compatible with EyeSight driver-assist system
- Electronic control unit (ECU) integration
- CAN bus communication
- Safety
-
- Fail-safe mode
- Overheat protection
- Torque reduction during slip
- Reverse lockout
Safety Features
- Protection Systems
-
- Overheat protection
- Fail-safe mode
- Torque reduction during slip
- Mechanical Safeguards
-
- Reverse lockout
- Parking pawl lock
- Neutral safety switch
- Electronic Safeguards
-
- ECU-controlled shift logic
- Adaptive shift control
- Slip detection
Comfort Features
- Smoothness
-
- Seamless gear transitions
- Reduced vibration
- Quiet operation
- Control
-
- Paddle shifters
- Sport mode
- Manual mode
- Convenience
-
- Auto start-stop compatibility
- Eco mode
- Adaptive shift control
- Climate
-
- Advanced cooling system
- Temperature monitoring
- Fluid circulation system
Accessories
- Performance
-
- Transmission cooler
- Performance fluid
- Shift kit
- Maintenance
-
- Fluid exchange kit
- Filter kit
- Seal kit
- Diagnostic
-
- OBD-II scanner
- Transmission diagnostic tool
- Fluid temperature gauge
Maintenance
- Service interval
- Every 60,000 miles or 60 months
- Service Items
-
- Fluid and filter replacement
- Inspect for leaks
- Check transmission mounts
- Inspect drive belts
- Check electronic connections
- Perform diagnostic scan
- Maintenance Notes
- Use only Subaru-approved CVT fluid. Avoid towing beyond rated capacity to prevent overheating.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission and drivetrain
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Perforation from corrosion
- Emissions
- Miles: 80,000Years: 8Coverage: Emissions-related components
- Warranty Terms
- Warranty is transferable to subsequent owners. Regular maintenance is required to maintain coverage.
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser alignment
- Dynamic balancing
- Quality Control
- inspection: 100% component inspectionTesting: Dynamic load testingCalibration: ECU calibration
- Sustainability Practices
-
- Recycled aluminum usage
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Year: 500,000Defect Rate: 0.01%Production Time: 2.5 hours per unit
Service Information for tr690 transmission Service
Maintenance and service requirements specific to this component
- Inspect transmission fluid level
- Check for leaks
- Inspect transmission mounts
- Perform diagnostic scan
- Check electronic connections
Ensure fluid level is within specified range. Use only Subaru-approved CVT fluid.
- Replace transmission fluid and filter
- Inspect drive belts
- Check cooling system
- Perform full diagnostic scan
- Inspect and clean transmission exterior
Fluid replacement requires specialized equipment. Ensure proper disposal of used fluid.
- Complete transmission fluid flush
- Replace drive belts
- Inspect and replace seals if necessary
- Perform transmission performance test
- Check and recalibrate ECU
Major service interval. Requires specialized tools and training. Consider professional service.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the TR690 transmission compatible with all 2019-Present Subaru Ascent models?
Is the TR690 transmission compatible with all 2019-Present Subaru Ascent models?
The TR690 transmission is specifically designed for the 2019-Present Subaru Ascent models equipped with the Lineartronic CVT system. It is compatible with all trim levels, including Base, Premium, Limited, and Touring. However, compatibility may vary if aftermarket modifications have been made. Always verify your vehicle's specifications before purchasing or installing the transmission.
Q2 What are the maintenance requirements for the TR690 transmission in the Subaru Ascent?
What are the maintenance requirements for the TR690 transmission in the Subaru Ascent?
The TR690 transmission requires regular maintenance to ensure optimal performance. Subaru recommends inspecting the transmission fluid every 30,000 miles and replacing it every 60,000 miles. Additionally, check for leaks, unusual noises, or shifting issues during routine service. Adhering to the maintenance schedule outlined in the owner's manual is crucial for longevity and reliability.
Q3 How do I install or replace the TR690 transmission in my Subaru Ascent?
How do I install or replace the TR690 transmission in my Subaru Ascent?
Replacing the TR690 transmission involves several steps: 1) Disconnect the battery and remove the air intake system. 2) Drain the transmission fluid and disconnect the driveshaft and wiring harness. 3) Support the engine and remove the transmission mounting bolts. 4) Carefully lower the transmission and install the new unit in reverse order. Torque all bolts to factory specifications and refill with the recommended fluid. Professional installation is recommended.
Q4 What should I do if my TR690 transmission is not shifting smoothly?
What should I do if my TR690 transmission is not shifting smoothly?
If your TR690 transmission is not shifting smoothly, start by checking the transmission fluid level and condition. Low or contaminated fluid can cause shifting issues. Inspect for error codes using a diagnostic tool. Common solutions include resetting the transmission control module, replacing the fluid, or addressing sensor malfunctions. If problems persist, consult a certified Subaru technician.
Q5 How can I optimize the performance of my TR690 transmission?
How can I optimize the performance of my TR690 transmission?
To optimize the TR690 transmission's performance, use only Subaru-approved CVT fluid and ensure it is at the correct level. Avoid aggressive driving and excessive towing to reduce wear. Regularly update the transmission control module software through your Subaru dealer. Proper maintenance and adherence to the recommended service intervals will ensure smooth and efficient 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.
Subaru Ascent TR690 Transmission Service Manual
Coming SoonThis manual provides detailed instructions for servicing and maintaining the TR690 transmission, including fluid specifications, torque settings, and diagnostic procedures.
Technical Service Bulletin for TR690 Transmission Updates
Coming SoonThis bulletin outlines software updates and technical improvements for the TR690 transmission to address common issues and enhance performance.
Subaru Ascent Parts and Accessories Catalog
Coming SoonThis catalog lists all OEM parts and accessories for the Subaru Ascent, including transmission components, with 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.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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