Lexus GS 2012-2020 U660E Transmission Specifications
This document provides a detailed overview of the U660E transmission specifications for the 2012-2020 Lexus GS models. 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. Whether you're a technician, enthusiast, or owner, this resource offers valuable insights into the transmission's design, compatibility, and operational parameters, helping you make informed decisions about repairs, upgrades, or routine servicing.
Overview Specifications
This document provides detailed specifications and technical information about the u660e transmission used in the 2012-2020 Lexus GS models. 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 comprehensive insights.
How to Use
Use the search bar to enter keywords related to the u660e transmission, such as 'gear ratios' or 'fluid capacity'. Results will highlight relevant sections and subsections for quick access.
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Key Specifications
Transmission Type
6-speed automatic
Gear Ratios
3.538 to 0.582
Fluid Capacity
7.5 quarts
Service Interval
60,000 miles
Compatibility
V6 and V8 engines
Available Specifications
Transmission Design
This section covers the design and engineering of the u660e transmission, including its construction, materials, and layout. Learn about the transmission's architecture and how it integrates with the Lexus GS drivetrain.
Transmission Design
This section covers the design and engineering of the u660e transmission, including its construction, materials, and layout. Learn about the transmission's architecture and how it integrates with the Lexus GS drivetrain.
Construction and Materials
- Aluminum alloy casing for reduced weight
- 6-speed automatic gearbox design
- High-strength steel gears for durability
- Sealed unit for improved reliability
- Compact design for efficient packaging
- Advanced lubrication system for smooth operation
Integration with Drivetrain
- Direct connection to the engine via torque converter
- Compatible with rear-wheel drive (RWD) and all-wheel drive (AWD) configurations
- Seamless integration with Lexus Drive Mode Select system
- Optimized for V6 and V8 engine variants
Performance Specifications
Explore the performance characteristics of the u660e transmission, including gear ratios, shift times, and efficiency. This section highlights how the transmission enhances the driving experience in the Lexus GS.
Performance Specifications
Explore the performance characteristics of the u660e transmission, including gear ratios, shift times, and efficiency. This section highlights how the transmission enhances the driving experience in the Lexus GS.
Gear Ratios
- 1st gear: 3.538
- 2nd gear: 2.060
- 3rd gear: 1.404
- 4th gear: 1.000
- 5th gear: 0.713
- 6th gear: 0.582
Shift Performance
- Quick and precise gear changes
- Adaptive shift logic for varying driving conditions
- Smooth transitions between gears
- Sport mode for enhanced responsiveness
Maintenance and Service
This section provides essential information on maintaining and servicing the u660e transmission. Learn about fluid requirements, service intervals, and common troubleshooting tips.
Maintenance and Service
This section provides essential information on maintaining and servicing the u660e transmission. Learn about fluid requirements, service intervals, and common troubleshooting tips.
Fluid Requirements
- Recommended fluid: Toyota WS ATF
- Fluid capacity: 7.5 quarts (approx.)
- Fluid change interval: Every 60,000 miles
- Use of genuine fluid for optimal performance
Service Tips
- Regular inspection of transmission mounts
- Check for leaks during routine maintenance
- Monitor transmission temperature during heavy use
- Reset adaptive learning after fluid changes
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Transmission Specifications
Overview
- Type
- 8-speed automatic
- Configuration
- Longitudinal
- Platform
- Lexus GS 2012-2020
- Material
- Aluminum casing with steel internals
- Location
- Front-engine, rear-wheel-drive/all-wheel-drive
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
- 1.4 inches (35.6 mm)
- Fluid Capacity
- 7.5 quarts (7.1 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Composite friction materials
- Seals
- Synthetic rubber
- Sensors
- High-temperature resistant plastics
Features
- Performance
-
- Quick-shift technology
- Adaptive shift control
- Sport mode with paddle shifters
- Eco mode for fuel efficiency
- Durability
-
- Reinforced gear teeth
- High-temperature fluid cooling
- Sealed bearings for longevity
- Control
-
- Electronic shift-by-wire system
- Integrated torque converter
- Precision hydraulic control
- integration
-
- Seamless integration with Lexus Drive Mode Select
- Compatibility with hybrid systems (GS 450h)
- Direct connection to vehicle ECU
- Safety
-
- Fail-safe limp mode
- Overheat protection
- Gear position sensor redundancy
Safety Features
- Mechanical Protection
-
- Overload protection
- Torque limiter
- Electronic Protection
-
- Sensor redundancy
- Fault detection system
- Thermal Protection
-
- Integrated fluid cooler
- Overheat shutdown
Comfort Features
- Shift Quality
-
- Smooth gear transitions
- Adaptive shift logic
- Noise Reduction
-
- Precision gear meshing
- Vibration dampening
- User interface
-
- Paddle shifters
- Drive mode selection
- Climate Adaptation
-
- Cold-start optimization
- High-temperature performance
Accessories
- Performance
-
- Transmission cooler kit
- High-performance fluid
- Shift enhancement module
- Maintenance
-
- Fluid exchange kit
- Filter replacement kit
- Diagnostic tool
- Protection
-
- Transmission skid plate
- Heat shield
- Seal protector
Maintenance
- Service interval
- Every 60,000 miles or 60 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Sensor calibration
- Shift quality check
- Mount inspection
- Maintenance Notes
- Use only Lexus-approved transmission fluid for optimal performance.
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Parts and labor
- Powertrain
- Miles: 70,000Years: 6Coverage: Major components
- Corrosion
- Miles: UnlimitedYears: 6Coverage: Perforation only
- Emissions
- Miles: 80,000Years: 8Coverage: Federal emissions components
Production Details
- Manufacturer
- Aisin Seiki Co., Ltd.
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser alignment
- Quality Control
- inspection: 100% component testingTolerance: ±0.001 inchesTesting: Dyno and road simulation
- Sustainability
-
- Recycled aluminum usage
- Low-emission manufacturing
- Energy-efficient processes
- Production Metrics
- Units Per Day: 500Defect Rate: 0.01%Energy Usage: 15 kWh per unit
Service Information for u660e transmission Service
Maintenance and service requirements specific to this component
- Inspect transmission fluid level
- Check for leaks
- Inspect mounts and linkages
- Test shift quality
Early detection of issues can prevent major repairs.
- Replace transmission fluid
- Replace transmission filter
- Inspect seals and gaskets
- Calibrate sensors
Use only Lexus-approved transmission fluid.
- Complete fluid flush
- Inspect and replace clutch packs if necessary
- Check torque converter operation
- Perform full diagnostic scan
Major service may require specialized tools and equipment.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the u660e transmission compatible with all 2012-2020 Lexus GS models?
Is the u660e transmission compatible with all 2012-2020 Lexus GS models?
The u660e transmission is compatible with the 2012-2020 Lexus GS 350 models equipped with the 2GR-FSE engine. It is not compatible with hybrid variants or models with different engine configurations. Always verify your vehicle's specifications before purchasing or installing the transmission to ensure compatibility.
Q2 What are the maintenance requirements for the u660e transmission?
What are the maintenance requirements for the u660e transmission?
The u660e transmission requires regular maintenance, including fluid changes every 60,000 miles or as specified in the owner's manual. Inspect for leaks, ensure proper fluid levels, and replace the transmission filter during service intervals. Regular maintenance helps prevent wear and ensures optimal performance.
Q3 How do I install or replace the u660e transmission in a 2012-2020 Lexus GS?
How do I install or replace the u660e transmission in a 2012-2020 Lexus GS?
To install or replace the u660e transmission, first, disconnect the battery and remove the transmission pan and mounts. Use a transmission jack to support the unit, disconnect the driveshaft and wiring, and carefully lower the transmission. Install the new unit by reversing the steps, ensuring all connections are secure and torqued to specifications.
Q4 What should I do if my u660e transmission is slipping or shifting roughly?
What should I do if my u660e transmission is slipping or shifting roughly?
If your u660e transmission is slipping or shifting roughly, check the transmission fluid level and condition. Low or contaminated fluid can cause these issues. Inspect for leaks, replace the fluid and filter if necessary, and reset the transmission control module. If problems persist, consult a professional for further diagnostics.
Q5 How can I optimize the performance of my u660e transmission?
How can I optimize the performance of my u660e transmission?
To optimize the u660e transmission's performance, use high-quality transmission fluid and ensure regular maintenance. Avoid aggressive driving and excessive towing. Consider upgrading the transmission cooler for better heat dissipation. Regularly reset the transmission control module to adapt to driving conditions and maintain smooth shifting.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Lexus GS 350 Service Manual
Coming SoonComprehensive service manual for the 2012-2020 Lexus GS 350, including transmission maintenance and repair procedures.
u660e Transmission Technical Bulletin
Coming SoonTechnical service bulletin addressing common issues and updates for the u660e transmission in Lexus GS models.
Lexus GS Transmission Parts Catalog
Coming SoonDetailed catalog of transmission parts and accessories for the 2012-2020 Lexus GS models.
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General Information
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The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
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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