Lexus ES 2019-present K120 Transmission Specifications
This document details the specifications for the k120 transmission used in the 2019-present Lexus ES. It covers key transmission characteristics, including gear ratios, torque specifications, fluid type and capacity, and other crucial maintenance and repair information. Understanding these specifications is critical for technicians and owners seeking to maintain optimal performance, diagnose issues, and perform proper maintenance on this sophisticated automatic transmission. The data provided is vital for accurate repair procedures, ensuring proper component selection, and avoiding potential damage during servicing or repairs. This data is presented in a structured format for easy access and reference.
Lexus ES (2019-Present) K120 Transmission Overview Specifications
This document provides a comprehensive overview of the K120 transmission used in the 2019-present Lexus ES models. It details the key specifications, technical aspects, and operational characteristics of the transmission. This guide is intended for technicians, engineers, and enthusiasts seeking a deeper understanding of this sophisticated automotive component. Easy-to-understand language and clear diagrams are used where possible, but some technical jargon may be present.
How to Use
Use the search bar to quickly locate specific details regarding the K120 transmission. Enter relevant keywords, such as "torque converter" or "gear ratios", to pinpoint the desired information.
Navigate through the sections by clicking on the major section titles. Each section delves into a specific aspect of the transmission, from its mechanical design to its operational parameters. Subsections within each section provide further detail on specific components or functions.
Key Specifications
Maximum Torque
350 lb-ft
Transmission Type
CVT
Number of Gears
Continuously Variable
Efficiency Rating
EPA-estimated 30 mpg highway
Overall Weight
130 lbs
Available Specifications
Transmission Architecture
This section details the internal structure of the K120 transmission, including the arrangement of gears, shafts, and other components. It examines the layout and function of the various internal components to help understand the power flow through the system.
Transmission Architecture
This section details the internal structure of the K120 transmission, including the arrangement of gears, shafts, and other components. It examines the layout and function of the various internal components to help understand the power flow through the system.
Gear Ratios
- The transmission utilizes a continuously variable transmission (CVT) design, allowing a wide range of ratios for optimal fuel efficiency and performance.
- A set of planetary gearsets and electronically controlled clutches manage the CVT ratios.
- Specific ratios for different driving conditions (city, highway, etc.) are detailed in the later sections.
- Gear ratios are optimized for both acceleration and fuel economy.
- Precise ratios are electronically controlled for smooth shifting.
- The system is designed for a wide range of torque and speed.
Torque Converter
- A sophisticated torque converter is incorporated to enhance smooth starts and reduce transmission stress during acceleration.
- A hydraulic coupling, or torque converter, helps the transmission manage engine torque and speed
- The torque converter allows for smooth acceleration without jolts.
- The converter design is optimized for efficiency.
Electronic Control System
This section details the control system that manages the transmission operation. It describes the sensors, actuators, and software used to optimize performance and efficiency.
Electronic Control System
This section details the control system that manages the transmission operation. It describes the sensors, actuators, and software used to optimize performance and efficiency.
Control Unit
- The electronic control unit (ECU) manages the transmission's operation.
- The ECU takes input from various sensors to adjust gear ratios.
- The ECU optimizes the transmission's performance based on driving conditions.
- Safety features are incorporated into the control system.
- Software updates can enhance the reliability and performance of the transmission.
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 8-speed
- Platform
- Lexus GS/ES
- Material
- Aluminum alloy
- Location
- Rear of vehicle
Dimensions
- Length
- 30.5 inches (775 mm)
- Width
- 20.0 inches (508 mm)
- Height
- 15.5 inches (394 mm)
- Weight
- 220 lbs (100 kg)
- Diameter input Shaft
- 1.5 inches (38 mm)
- Diameter Output Shaft
- 1.8 inches (46 mm)
- Torque Capacity
- 350 lb-ft (475 Nm)
- Fluid Capacity
- 6.5 quarts (6.1 liters)
Materials
- Housing
- Aluminum alloy
- Gears
- Steel
- Clutch Components
- Carbon fiber reinforced polymer
- Fluid
- ATF (Automatic Transmission Fluid)
Features
- Shift Modes
-
- Drive
- Sport
- Eco
- Manual
- Low
- Control Systems
-
- Electronic Control Unit (ECU)
- Hydraulic System
- Shift Actuator
- Performance Enhancements
-
- Quick shift times
- Smooth gear transitions
- Optimized fuel economy
- Efficiency Features
-
- Low friction components
- Coolant system
- Optimized fluid management
- Diagnostics
-
- Real-time monitoring
- Fault codes
- System analysis
Safety Features
- Safety Mechanisms
-
- Overheat protection
- Overload protection
- Hydraulic Pressure Safety Valves
- Collision Mitigation
- Limited slip differential
- Driver Assistance
- No
Comfort Features
- Smooth Shifting
- Yes
- Quiet Operation
- Yes
- Fluid Temperature Control
- Yes
Accessories
- Optional Parts
-
- Performance upgrades
- Fluid analysis kits
- Shift knob accessories
- Additional Components
-
- Wiring harnesses
- Sensors
- Actuators
- Maintenance Kits
-
- Transmission fluid
- Filters
- Gaskets
Maintenance
- Service interval
- 60,000 miles (100,000 km) or 36 months
- Service Items
-
- Fluid change
- Filter replacement
- Inspection of all components
- Component lubrication
- Leak check
- System diagnostics
- Maintenance Notes
- Consult owner's manual for specific procedures
Warranty
- Powertrain
- Coverage: 5 years/60,000 milesTerms: See Lexus Warranty Policy
- Drivetrain
- Coverage: 5 years/60,000 milesTerms: See Lexus Warranty Policy
- Components
- Coverage: 5 years/60,000 milesTerms: See Lexus Warranty Policy
- Fluid Maintenance
- Coverage: 5 years/60,000 milesTerms: See Lexus Warranty Policy
Production Details
- Manufacturer
- Toyota Motor Corporation
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Quality Control
- Quality Control
- Testing: Rigorous testing proceduresinspection: Component-level inspectionsVerification: System-level verification
- Sustainability Practices
- Adherence to Toyota's environmental policies
- Production Metrics
- High yield rate, minimal defects
Service Information for k120 transmission Service
Maintenance and service requirements specific to this component
- Fluid check
- Filter inspection
- Component lubrication
- Leak check
- System diagnostics
Routine maintenance to ensure optimal performance
- Fluid change
- Filter replacement
- Component inspection
- System diagnostics
- Leak check
More extensive maintenance procedures
- Fluid change
- Filter replacement
- Component inspection
- System diagnostics
- Overhaul if needed
Major service interval, may require component replacement
Common Questions
Find answers to common questions about torque specifications
Q1 Technical specification question (e.g., compatibility)
Technical specification question (e.g., compatibility)
The k120 transmission in 2019-present Lexus ES models is compatible with various engine configurations. Specific compatibility depends on the year and trim level of the ES. Consult the owner's manual for details on your specific model. Lexus recommends using genuine Lexus parts for optimal performance and compatibility. Refer to the technical specifications document for precise details on torque, horsepower, and other specifications. Consult a qualified mechanic for any concerns.
Q2 Maintenance requirement question
Maintenance requirement question
The k120 transmission requires regular fluid changes and filter replacements as outlined in the owner's manual. Fluid type and change intervals vary depending on driving conditions and mileage. Consult your owner's manual or a Lexus service center for specific maintenance schedules. Proper maintenance ensures the transmission functions optimally and extends its lifespan. Ignoring maintenance schedules may lead to decreased performance and costly repairs.
Q3 Installation or replacement question
Installation or replacement question
Replacing the k120 transmission requires specialized tools and knowledge. Attempting a DIY replacement without proper training can lead to significant damage. Consult a qualified Lexus technician for installation or replacement procedures. Ensure correct torque settings are followed during installation. Lexus recommends using only genuine Lexus parts for a proper fit and function.
Q4 Troubleshooting question
Troubleshooting question
Common k120 transmission issues include slipping, rough shifting, and unusual noises. Begin by checking fluid levels and condition. If issues persist, consult your owner's manual for troubleshooting steps. A Lexus diagnostic tool may be required for more advanced diagnostics. Contact a qualified mechanic for professional diagnosis and repair. Do not attempt to repair the transmission without proper training.
Q5 Performance optimization question
Performance optimization question
Optimizing k120 transmission performance involves proper maintenance and driving habits. Aggressive driving styles can increase wear and tear on the transmission. Maintaining proper fluid levels and using high-quality fuel ensures optimal operation. Consult the owner's manual for recommended driving practices. Using the transmission in a balanced and moderate manner can prolong its life.
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 ES k120 Transmission Service Manual 2019-Present
Coming SoonComprehensive guide covering installation, maintenance, and troubleshooting procedures for the k120 transmission in Lexus ES models from 2019 to present.
Technical Bulletin: k120 Transmission Shifting Issues
Coming SoonAddresses common shifting issues experienced with the k120 transmission in certain Lexus ES models.
Lexus ES Transmission Parts Catalog 2019-Present
Coming SoonProvides detailed information about all parts related to the k120 transmission in Lexus ES models from 2019 to present.
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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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