Lexus LX 1998-2007 A750 Transmission Specifications
This document provides detailed technical specifications for the A750 transmission used in the 1998-2007 Lexus LX. It includes information on gear ratios, torque capacity, fluid requirements, and maintenance intervals. These specifications are essential for understanding the transmission's performance, ensuring proper maintenance, and diagnosing issues. Whether you're a technician, enthusiast, or owner, this guide offers valuable insights into the transmission's design and operation, helping you optimize its longevity and performance.
Overview Specifications
This document provides detailed specifications and technical information about the A750 transmission used in the 1998-2007 Lexus LX. 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 find relevant information or explore the sections for in-depth details.
How to Use
Use the search bar to enter keywords related to the A750 transmission, such as 'gear ratios' or 'fluid capacity'. Results will highlight relevant sections and subsections for quick access.
Scroll through the sections to explore major topics. Click on a section title to expand it and view its subsections. Use the quick reference table for a summary of key specifications.
Key Specifications
Transmission Type
5-speed automatic
Torque Capacity
398 lb-ft (540 Nm)
Fluid Capacity
12.6 quarts (11.9 liters)
Gear Ratios
3.520:1 (1st) to 0.716:1 (5th)
Weight
187 lbs (85 kg)
Available Specifications
Transmission Design
This section covers the design and engineering of the A750 transmission, including its architecture, materials, and key components. Learn about the transmission's construction and how it contributes to the Lexus LX's performance.
Transmission Design
This section covers the design and engineering of the A750 transmission, including its architecture, materials, and key components. Learn about the transmission's construction and how it contributes to the Lexus LX's performance.
Architecture
- 5-speed automatic transmission
- Longitudinal mounting for rear-wheel and all-wheel drive configurations
- Aluminum alloy casing for reduced weight
- Integrated torque converter for smooth power delivery
- Electronically controlled shifting for precision
- Sealed design for durability in off-road conditions
Key Components
- Planetary gear sets for efficient power distribution
- High-strength steel gears for durability
- Advanced hydraulic control system
- Sealed bearings for reduced maintenance
- Integrated cooling system for optimal temperature management
Performance Specifications
Explore the performance metrics of the A750 transmission, including gear ratios, shift points, and torque capacity. This section provides insights into how the transmission enhances the driving experience.
Performance Specifications
Explore the performance metrics of the A750 transmission, including gear ratios, shift points, and torque capacity. This section provides insights into how the transmission enhances the driving experience.
Gear Ratios
- 1st gear: 3.520:1
- 2nd gear: 2.042:1
- 3rd gear: 1.400:1
- 4th gear: 1.000:1
- 5th gear: 0.716:1
- Reverse gear: 3.224:1
Shift Points
- Smooth upshifts at 2,000-2,500 RPM under normal driving conditions
- Downshifts optimized for engine braking and acceleration
- Adaptive shift logic for varying driving styles
- Manual mode for driver-controlled shifting
Maintenance and Service
This section provides guidelines for maintaining and servicing the A750 transmission. Learn about fluid requirements, inspection intervals, and common troubleshooting tips.
Maintenance and Service
This section provides guidelines for maintaining and servicing the A750 transmission. Learn about fluid requirements, inspection intervals, and common troubleshooting tips.
Fluid Requirements
- Recommended fluid: Toyota WS ATF
- Fluid capacity: 12.6 quarts (11.9 liters)
- Fluid change interval: Every 60,000 miles or as specified in the owner's manual
- Use of non-recommended fluids may void warranty
Inspection and Troubleshooting
- Regular inspection of fluid levels and condition
- Check for leaks around seals and gaskets
- Diagnose shifting issues using onboard diagnostics
- Replace worn components such as solenoids or clutches as needed
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 5-speed
- Platform
- Aisin A750F
- Material
- Aluminum alloy casing
- Location
- Longitudinal, rear-wheel drive or four-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
- 1.5 inches (38.1 mm)
- Fluid Capacity
- 12.7 quarts (12 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Composite friction materials
- Seals
- Nitrile rubber
- Cooling Lines
- Steel with rubber hoses
Features
- Shifting
-
- Electronic shift control
- Adaptive shift logic
- Manual shift mode
- Tow/Haul mode
- Cooling
-
- Integrated transmission cooler
- Auxiliary cooler option
- Temperature monitoring
- Durability
-
- Reinforced gear train
- Heavy-duty clutch packs
- High-strength output shaft
- integration
-
- Compatible with V8 engines
- Seamless 4WD integration
- Electronic throttle control compatibility
- Sensors
-
- Input speed sensor
- Output speed sensor
- Fluid temperature sensor
- Shift position sensor
Safety Features
- Fail Safes
-
- Limp-home mode
- Overheat protection
- Shift lock system
- Monitoring
-
- Real-time fluid temperature monitoring
- Shift error detection
Comfort Features
- Smoothness
-
- Adaptive shift smoothing
- Low-vibration design
- Noise Reduction
-
- Precision gear meshing
- Sound-dampening casing
- Drivability
-
- Seamless upshifts
- Predictive downshifts
Accessories
- Cooling
-
- Auxiliary transmission cooler
- Thermal wrap
- Upgraded cooling lines
- Performance
-
- Shift kit
- High-capacity torque converter
- Reinforced output shaft
- Maintenance
-
- Transmission fluid dipstick
- Filter kit
- Drain plug kit
Maintenance
- Service interval
- Every 60,000 miles or 60 months
- Service Items
-
- Fluid and filter replacement
- Pan gasket inspection
- Shift linkage adjustment
- Cooling system check
- Sensor calibration
- Notes
- Use only Toyota Type T-IV or equivalent fluid
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Defects in materials or workmanship
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission components
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Perforation from corrosion
- Emissions
- Miles: 80,000Years: 8Coverage: Emission-related components
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, Leak testingStandards: ISO 9001 certified
- Sustainability
-
- Recyclable materials
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Year: Approximately 500,000Defect Rate: Less than 0.1%
Service Information for a750 transmission Service
Maintenance and service requirements specific to this component
- Inspect transmission fluid level and condition
- Check for leaks
- Inspect shift linkage
- Test shift performance
Early detection of issues can prevent major repairs
- Replace transmission fluid and filter
- Inspect and clean transmission pan
- Check cooling system performance
- Test electronic shift control
Use only manufacturer-recommended fluids
- Complete transmission fluid flush
- Inspect and replace worn clutch packs
- Check and adjust shift solenoids
- Perform full diagnostic scan
Major service may require specialized tools
Common Questions
Find answers to common questions about torque specifications
Q1 Is the A750 transmission compatible with other Lexus models from 1998-2007?
Is the A750 transmission compatible with other Lexus models from 1998-2007?
The A750 transmission is primarily designed for the 1998-2007 Lexus LX 470. While it shares similarities with other Toyota and Lexus models, compatibility depends on specific drivetrain configurations. Always verify with your vehicle's VIN and consult a professional to ensure proper fitment and functionality.
Q2 What are the maintenance requirements for the A750 transmission?
What are the maintenance requirements for the A750 transmission?
The A750 transmission requires regular maintenance, including fluid changes every 60,000 miles or as specified in the owner's manual. Use only Toyota Type T-IV or equivalent ATF. Inspect for leaks, worn seals, and ensure proper fluid levels. Periodic checks of the transmission control module and solenoids are also recommended.
Q3 How do I replace the A750 transmission in a 1998-2007 Lexus LX?
How do I replace the A750 transmission in a 1998-2007 Lexus LX?
To replace the A750 transmission, first disconnect the battery and drain the transmission fluid. Remove the driveshaft, exhaust components, and crossmember. Disconnect electrical connectors and shift linkage. Support the engine, unbolt the transmission, and carefully lower it. Install the new transmission in reverse order, ensuring proper torque specifications and fluid levels.
Q4 What should I do if my A750 transmission is slipping or shifting hard?
What should I do if my A750 transmission is slipping or shifting hard?
If your A750 transmission is slipping or shifting hard, check the fluid level and condition first. Low or contaminated fluid can cause these issues. Inspect for error codes using a diagnostic tool. Common culprits include faulty solenoids, worn clutch packs, or a failing torque converter. Consult a professional for further diagnosis.
Q5 How can I optimize the performance of my A750 transmission?
How can I optimize the performance of my A750 transmission?
To optimize A750 transmission performance, ensure regular fluid changes with the correct ATF. Use a high-quality transmission cooler for heavy-duty use. Avoid aggressive driving and ensure proper engine tuning. Regularly inspect and maintain the transmission control module and solenoids for optimal shifting and longevity.
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 LX 470 A750 Transmission Service Manual
Coming SoonDetailed service manual covering installation, maintenance, and troubleshooting for the A750 transmission in the 1998-2007 Lexus LX 470.
A750 Transmission Technical Service Bulletin
Coming SoonTechnical bulletin addressing common issues, updates, and fixes for the A750 transmission in Lexus LX 470 models.
Lexus LX 470 Transmission Parts Catalog
Coming SoonComprehensive catalog of OEM and aftermarket parts for the A750 transmission, including seals, gaskets, and solenoids.
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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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