Lexus ES 2013-2018 K120 Transmission Specifications
This document provides a detailed overview of the K120 transmission specifications for the 2013-2018 Lexus ES. It includes technical details such as gear ratios, torque capacity, fluid type, 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 and functionality, helping you make informed decisions about repairs, upgrades, or routine servicing.
Overview Specifications
This document provides detailed specifications and technical information about the k120-transmission used in the 2013-2018 Lexus ES models. It is designed for automotive enthusiasts, technicians, and engineers seeking in-depth knowledge about the transmission system. The document is organized into sections covering design, performance, maintenance, and troubleshooting. Use the search and navigation instructions to quickly find relevant information.
How to Use
Use the search bar to enter keywords related to the k120-transmission, such as 'gear ratios' or 'fluid capacity'. The search results will highlight relevant sections and subsections for quick access.
Navigate through the document using the table of contents. Each major section is divided into subsections with detailed technical points. Click on a section title to expand and view its contents.
Key Specifications
Transmission Type
6-speed automatic
Maximum Torque
250 Nm
Fluid Capacity
6.9 liters
Gear Ratios
3.300:1 to 0.608:1
Service Interval
60,000 miles
Available Specifications
Design and Construction
This section covers the design features and construction details of the k120-transmission. It includes information about the materials used, internal components, and overall architecture.
Design and Construction
This section covers the design features and construction details of the k120-transmission. It includes information about the materials used, internal components, and overall architecture.
Transmission Type
- 6-speed automatic transmission
- Front-wheel drive configuration
- Compact and lightweight design
- Optimized for smooth shifting
- Includes torque converter
- Sealed unit for durability
Internal Components
- High-strength alloy gears
- Advanced hydraulic control system
- Precision-machined shafts
- Durable clutch packs
- Integrated cooling system
- Sealed bearings for reduced friction
Performance Specifications
This section provides detailed performance metrics for the k120-transmission, including gear ratios, torque capacity, and efficiency.
Performance Specifications
This section provides detailed performance metrics for the k120-transmission, including gear ratios, torque capacity, and efficiency.
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: 250 Nm
- Designed for engines up to 300 hp
- Efficient power transfer with minimal loss
- Optimized for fuel economy
- Smooth acceleration across all gears
- Handles high RPMs without overheating
Maintenance and Service
This section outlines maintenance requirements and service intervals for the k120-transmission. It includes fluid specifications, inspection procedures, and common troubleshooting tips.
Maintenance and Service
This section outlines maintenance requirements and service intervals for the k120-transmission. It includes fluid specifications, inspection procedures, and common troubleshooting tips.
Fluid Specifications
- Recommended fluid: Toyota ATF WS
- Fluid capacity: 6.9 liters
- Fluid change interval: 60,000 miles
- Use only manufacturer-approved fluids
- Check fluid level regularly
- Avoid overfilling or underfilling
Common Issues and Solutions
- Delayed shifting: Check fluid level and condition
- Rough shifting: Inspect clutch packs and solenoids
- Transmission overheating: Verify cooling system operation
- Unusual noises: Check for worn bearings or gears
- Fluid leaks: Inspect seals and gaskets
- Error codes: Use diagnostic tools for troubleshooting
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Transmission Specifications
Overview
- Type
- 6-speed automatic
- Configuration
- Front-wheel drive
- Platform
- Toyota K platform
- Material
- Aluminum alloy casing
- Location
- Front-mounted longitudinal
Dimensions
- Length
- 28.5 in (724 mm)
- Width
- 18.7 in (475 mm)
- Height
- 15.9 in (404 mm)
- Weight
- 165 lbs (75 kg)
- input Shaft Diameter
- 1.18 in (30 mm)
- Output Shaft Diameter
- 1.57 in (40 mm)
- Fluid Capacity
- 6.9 quarts (6.5 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Case-hardened steel
- Clutch Packs
- Carbon fiber composite
- Seals
- Viton rubber
- Bearings
- High-grade steel
Features
- Shift Technology
-
- Sequential shift mode
- Adaptive shift control
- Manual shift override
- Efficiency
-
- Lock-up torque converter
- Reduced internal friction
- Optimized gear ratios
- Performance
-
- Quick shift response
- Smooth gear transitions
- Enhanced acceleration
- Durability
-
- Reinforced gear teeth
- High-temperature resistance
- Corrosion-resistant coating
- integration
-
- ECU-controlled shifting
- Compatibility with hybrid systems
- Seamless integration with AWD systems
Safety Features
- Fail Safe
-
- Transmission limp mode
- Overheat protection
- Fluid pressure monitoring
- Driver Assistance
-
- Hill-start assist
- Downshift rev-matching
- Anti-rollback control
Comfort Features
- Noise Reduction
-
- Precision gear machining
- Vibration dampening mounts
- Acoustic insulation
- Smoothness
-
- Adaptive shift logic
- Torque converter lock-up
- Low-speed creep control
- Convenience
-
- Paddle shifters
- Sport mode selection
- Eco mode optimization
Accessories
- Performance
-
- Transmission cooler
- Upgraded shift kit
- High-capacity fluid pan
- Maintenance
-
- Fluid exchange kit
- Filter replacement kit
- Seal repair kit
- Diagnostic
-
- OBD-II scanner
- Transmission pressure tester
- Fluid condition analyzer
Maintenance
- Service interval
- Every 60,000 miles or 60 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Clutch pack wear check
- Solenoid function test
- Shift linkage adjustment
- Maintenance Notes
- Use only Toyota WS ATF fluid for optimal performance.
Warranty
- Basic
- Miles: 60,000Years: 5Coverage: Parts and labor
- Powertrain
- Miles: 100,000Years: 10Coverage: Major components
- Corrosion
- Miles: UnlimitedYears: 7Coverage: Perforation only
- Emissions
- Miles: 80,000Years: 8Coverage: Emission-related 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 in (0.025 mm)Testing: Dyno and road simulation
- Sustainability
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction initiatives
- Production Metrics
- Units Per Day: 1,200Defect Rate: 0.02%Energy Efficiency: 85%
Service Information for k120 transmission Service
Maintenance and service requirements specific to this component
- Inspect transmission fluid level
- Check for leaks
- Test shift quality
- Inspect mounts and linkages
Ensure fluid is at operating temperature during inspection.
- Replace transmission fluid
- Replace filter
- Inspect clutch packs
- Test solenoid operation
- Check ECU software version
Use only OEM-specified fluid and parts.
- Complete transmission flush
- Replace all seals
- Inspect and adjust shift linkage
- Test torque converter lock-up
- Perform full diagnostic scan
Requires specialized equipment and trained technicians.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the K120 transmission compatible with all 2013-2018 Lexus ES models?
Is the K120 transmission compatible with all 2013-2018 Lexus ES models?
The K120 transmission is compatible with the 2013-2018 Lexus ES 350 models equipped with the 3.5L V6 engine. It is not compatible with hybrid models like the ES 300h, which use a different transmission system. Always verify your vehicle's specifications, including the engine type and model year, before purchasing or installing the K120 transmission.
Q2 What are the maintenance requirements for the K120 transmission?
What are the maintenance requirements for the K120 transmission?
The K120 transmission requires regular maintenance to ensure optimal performance. This includes checking and replacing the transmission fluid every 60,000 miles or as recommended in the owner's manual. Inspect for leaks, ensure proper fluid levels, and monitor for unusual noises or shifting issues. Regular servicing by a certified technician is recommended to maintain the transmission's longevity and performance.
Q3 How do I install or replace the K120 transmission in a 2013-2018 Lexus ES?
How do I install or replace the K120 transmission in a 2013-2018 Lexus ES?
Replacing the K120 transmission involves several steps: 1) Safely lift the vehicle and remove the undercarriage panels. 2) Drain the transmission fluid and disconnect the driveshaft, wiring harness, and mounting bolts. 3) Carefully lower the old transmission and install the new K120 unit. 4) Reconnect all components, refill with the specified transmission fluid, and test for proper operation. Professional installation is recommended due to the complexity of the process.
Q4 What should I do if my K120 transmission is not shifting smoothly?
What should I do if my K120 transmission is not shifting smoothly?
If your K120 transmission is not shifting smoothly, start by checking the transmission fluid level and condition. Low or contaminated fluid can cause shifting issues. Inspect for leaks, damaged wiring, or faulty sensors. If the problem persists, use a diagnostic tool to check for error codes. Common solutions include fluid replacement, sensor repairs, or recalibrating the transmission control module.
Q5 How can I optimize the performance of my K120 transmission?
How can I optimize the performance of my K120 transmission?
To optimize the K120 transmission's performance, use only the recommended transmission fluid and replace it at regular intervals. Avoid aggressive driving and ensure the engine is properly tuned. Regularly inspect and maintain the transmission cooling system to prevent overheating. Consider upgrading to a high-performance torque converter or aftermarket tuning software for enhanced 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.
2013-2018 Lexus ES 350 Service Manual
Coming SoonThis manual provides detailed instructions for servicing the K120 transmission and other components of the Lexus ES 350. It includes diagrams, torque specifications, and troubleshooting tips.
K120 Transmission Technical Bulletin
Coming SoonThis bulletin addresses common issues and updates for the K120 transmission, including software updates and recommended maintenance practices.
Lexus ES 350 Parts and Accessories Catalog
Coming SoonThis catalog lists all OEM and aftermarket parts compatible with the 2013-2018 Lexus ES 350, including transmission components and accessories.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
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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