Lexus RX 2010-2015 U660E Transmission Transmission Specifications
Lexus RX 2010-2015

Lexus RX 2010-2015 U660E Transmission Specifications

This document provides a detailed overview of the transmission specifications for the 2010-2015 Lexus RX models equipped with the u660e transmission. It includes technical details such as gear ratios, torque capacity, fluid type, and maintenance intervals. These specifications are essential for owners, technicians, and enthusiasts to understand the performance, maintenance requirements, and compatibility of the transmission. Whether you're performing routine maintenance, diagnosing issues, or considering upgrades, this resource offers valuable insights to ensure optimal performance and longevity of your Lexus RX.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the u660e transmission used in the 2010-2015 Lexus RX 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'. The search results will highlight relevant sections and subsections for quick access.

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

Key Specifications

Transmission Type

6-speed automatic

Maximum Torque

330 lb-ft

Fluid Capacity

7.5 quarts

Weight

187 lbs

Service Interval

60,000 miles

Available Specifications

Transmission Design and Features

This section covers the design philosophy and key features of the u660e transmission, including its construction, materials, and innovative technologies that enhance performance and durability.

Construction and Materials
  • 6-speed automatic transmission
  • Aluminum alloy casing for reduced weight
  • High-strength steel gears for durability
  • Advanced sealing technology to prevent leaks
Innovative Technologies
  • Adaptive Shift Control for smooth gear changes
  • Lock-up torque converter for improved efficiency
  • Electronically controlled hydraulic system
  • Integrated temperature management system

Performance Specifications

This section provides detailed performance metrics of the u660e transmission, including gear ratios, torque capacity, and shift response times.

Gear Ratios
  • 1st gear: 3.300:1
  • 2nd gear: 1.900:1
  • 3rd gear: 1.420:1
  • 4th gear: 1.000:1
  • 5th gear: 0.713:1
  • 6th gear: 0.608:1
Torque and Power Handling
  • Maximum torque capacity: 330 lb-ft
  • Designed for engines up to 300 horsepower
  • Optimized for both city and highway driving
  • Efficient power transfer with minimal loss

Maintenance and Service

This section outlines the maintenance requirements and service intervals for the u660e transmission, including fluid changes, inspections, and common troubleshooting tips.

Fluid Requirements
  • Recommended fluid: Toyota WS ATF
  • Fluid capacity: 7.5 quarts (with torque converter)
  • Fluid change interval: Every 60,000 miles
  • Use of synthetic fluid for extended life
Common Issues and Solutions
  • Delayed shifting: Check fluid level and condition
  • Transmission overheating: Inspect cooling system
  • Unusual noises: Verify gear alignment and mounts
  • Error codes: Use diagnostic tools for troubleshooting

Transmission Specifications

Overview

Type
Automatic Transmission
Configuration
6-speed
Platform
Front-wheel drive / All-wheel drive
Material
Aluminum alloy casing
Location
Mounted longitudinally

Dimensions

Length
28.5 inches (724 mm)
Width
22.8 inches (579 mm)
Height
18.3 inches (465 mm)
Weight
165 lbs (75 kg)
input Shaft Diameter
1.2 inches (30.5 mm)
Output Shaft Diameter
1.5 inches (38.1 mm)
Fluid Capacity
7.5 quarts (7.1 liters)

Materials

Casing
Aluminum alloy
Gears
Hardened steel
Clutch Packs
Composite friction materials
Seals
Synthetic rubber

Features

Performance
  • Smooth shift transitions
  • Adaptive shift control
  • Manual shift mode
Efficiency
  • Optimized gear ratios
  • Reduced internal friction
  • Eco-mode for fuel savings
Durability
  • Reinforced internal components
  • High-temperature resistance
  • Corrosion-resistant materials
Technology
  • Electronic control unit (ECU)
  • Shift-by-wire system
  • Integrated diagnostics
Comfort
  • Quiet operation
  • Low vibration
  • Seamless acceleration

Safety Features

Fail Safe
  • Limp-home mode
  • Overheat protection
Monitoring
  • Transmission temperature sensor
  • Fluid level sensor
Mechanical
  • Reinforced casing
  • Shear-resistant gears

Comfort Features

Noise Reduction
  • Sound-dampening materials
  • Precision-engineered gears
Vibration Control
  • Balanced rotating components
  • Isolated mounting points
Shift Quality
  • Smooth gear transitions
  • Adaptive shift logic
Climate Adaptation
  • Cold-start optimization
  • High-temperature performance

Accessories

Fluids
  • ATF WS transmission fluid
  • Seal conditioner
Tools
  • Transmission jack adapter
  • Fluid pump
  • Diagnostic scanner
Upgrades
  • Performance shift kit
  • Enhanced cooling system

Maintenance

Service interval
Every 60,000 miles or 60 months
Service Items
  • Transmission fluid replacement
  • Filter replacement
  • Seal inspection
  • Shift linkage adjustment
  • Diagnostic scan
Maintenance Notes
Use only manufacturer-recommended fluids and parts for optimal performance.

Warranty

Basic
Miles: 50,000
Years: 4
Coverage: Parts and labor
Powertrain
Miles: 70,000
Years: 6
Coverage: Transmission components
Corrosion
Miles: Unlimited
Years: 5
Coverage: Casing and external parts
Extended
Miles: 100,000
Years: 8
Coverage: Optional extended coverage

Production Details

Manufacturer
Aisin Seiki Co., Ltd.
Manufacturing Process
  • Precision CNC machining
  • Heat treatment of gears
  • Automated assembly
Quality Control
Testing: Durability testing, Shift performance testing, Temperature resistance testing
Standards: ISO 9001 certification, JIS D 2001 compliance
Sustainability
  • Recyclable materials
  • Energy-efficient production
  • Waste reduction initiatives
Production Metrics
Annual Output: 500,000 units
Defect Rate: 0.01%
Lead Time: 4 weeks

Service Information for u660e transmission Service

Maintenance and service requirements specific to this component

30,000
30
  • Inspect transmission fluid level
  • Check for leaks
  • Inspect shift linkage
  • Perform diagnostic scan

Ensure fluid is at proper level and free of contaminants.

60,000
60
  • Replace transmission fluid
  • Replace transmission filter
  • Inspect seals and gaskets
  • Check torque converter operation

Use only ATF WS fluid for replacement.

120,000
120
  • Full transmission flush
  • Replace all seals and gaskets
  • Inspect clutch packs
  • Perform shift quality test

Major service interval; consider professional service.

Common Questions

Find answers to common questions about torque specifications

Q1

Is the u660e transmission compatible with all 2010-2015 Lexus RX models?

The u660e transmission is compatible with the 2010-2015 Lexus RX 350 models. It is specifically designed for vehicles with the 2GR-FE 3.5L V6 engine. Compatibility with other Lexus RX models or engines may vary, and it is recommended to verify the vehicle's specifications before installation.

Q2

What are the maintenance requirements for the u660e transmission?

The u660e transmission requires regular maintenance, including fluid changes every 60,000 to 100,000 miles, depending on driving conditions. Inspect for leaks, ensure proper fluid levels, and replace the transmission filter as needed. Regular diagnostics and software updates are also recommended to maintain optimal performance.

Q3

How do I install or replace the u660e transmission in a 2010-2015 Lexus RX?

To install or replace the u660e transmission, first, disconnect the battery and remove the transmission pan and filter. Unbolt the transmission from the engine and carefully lower it using a transmission jack. Install the new transmission, reconnect all components, and refill with the recommended fluid. Follow the service manual for torque specifications and detailed steps.

Q4

What should I do if my u660e transmission is not shifting properly?

If the u660e transmission is not shifting properly, check the transmission fluid level and condition. Inspect for error codes using a diagnostic tool. Common issues include worn solenoids, low fluid levels, or software glitches. Replace faulty components or update the transmission control module software as needed.

Q5

How can I optimize the performance of the u660e transmission?

To optimize performance, use the recommended transmission fluid and ensure proper fluid levels. Regularly update the transmission control module software. Avoid aggressive driving and ensure the cooling system is functioning properly to prevent overheating. Periodic diagnostics and maintenance are essential for long-term 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.

2010-2015 Lexus RX Transmission Service Manual

Coming Soon

Detailed service manual covering installation, maintenance, and troubleshooting for the u660e transmission in 2010-2015 Lexus RX models.

Technical Service Bulletin for u660e Transmission

Coming Soon

Latest updates and fixes for the u660e transmission, including software updates and common issues.

Lexus RX Transmission Parts Catalog

Coming Soon

Comprehensive catalog of transmission parts and accessories for 2010-2015 Lexus RX models.

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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

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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