Lexus SC 2002-2010 A650 Transmission Specifications
This document provides a detailed overview of the A650 transmission specifications for the 2002-2010 Lexus SC. It includes technical details such as gear ratios, torque capacity, fluid requirements, and maintenance intervals. These specifications are essential for owners, mechanics, and enthusiasts to understand the transmission's performance, ensure proper maintenance, and identify compatibility for repairs or upgrades. The information is sourced from official service manuals and technical guides, offering reliable and accurate data for troubleshooting, servicing, or enhancing the vehicle's drivetrain system.
Overview Specifications
This document provides detailed specifications and technical information about the a650 transmission used in the 2002-2010 Lexus SC 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 sections for comprehensive insights.
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Key Specifications
Transmission Type
6-speed automatic
Gear Ratios
3.538:1 to 0.582:1
Fluid Capacity
7.5 quarts
Shift Times
<200 ms
Compatible Models
Lexus SC 430, SC 400
Available Specifications
Transmission Design
This section covers the design and engineering of the a650 transmission, including its construction, materials, and layout. Learn about the transmission's architecture and how it integrates with the Lexus SC's drivetrain.
Transmission Design
This section covers the design and engineering of the a650 transmission, including its construction, materials, and layout. Learn about the transmission's architecture and how it integrates with the Lexus SC's drivetrain.
Construction and Materials
- Aluminum alloy casing for reduced weight
- 6-speed automatic transmission design
- Sealed unit for improved durability
- High-strength internal gears
- Advanced heat dissipation system
- Precision-machined components
Layout and Integration
- Longitudinal mounting for rear-wheel drive
- Compact design for optimal space utilization
- Direct connection to the V8 engine
- Integrated torque converter
- Compatible with Lexus SC 430 and SC 400 models
- Seamless integration with vehicle electronics
Performance Specifications
Explore the performance metrics of the a650 transmission, including gear ratios, shift times, and torque handling capabilities. This section provides insights into how the transmission enhances the driving experience.
Performance Specifications
Explore the performance metrics of the a650 transmission, including gear ratios, shift times, and torque handling capabilities. This section provides insights into how the transmission enhances the driving experience.
Gear Ratios
- 1st gear: 3.538:1
- 2nd gear: 2.060:1
- 3rd gear: 1.404:1
- 4th gear: 1.000:1
- 5th gear: 0.713:1
- 6th gear: 0.582:1
Shift Performance
- Smooth and precise gear shifts
- Adaptive shift logic for varying driving conditions
- Shift times under 200 milliseconds
- Manual shift mode for sporty driving
- Downshift rev-matching for smoother transitions
- Optimized for high-performance driving
Maintenance and Service
This section provides essential information on maintaining and servicing the a650 transmission. Learn about fluid requirements, service intervals, and common troubleshooting tips.
Maintenance and Service
This section provides essential information on maintaining and servicing the a650 transmission. Learn about fluid requirements, service intervals, and common troubleshooting tips.
Fluid Requirements
- Recommended fluid: Toyota Type T-IV ATF
- Fluid capacity: 7.5 quarts (with torque converter)
- Fluid change interval: Every 60,000 miles
- Use of synthetic fluid for extended life
- Proper fluid level check procedure
- Avoid mixing incompatible transmission fluids
Service Intervals
- Inspect transmission every 30,000 miles
- Replace transmission filter every 60,000 miles
- Check for leaks during routine maintenance
- Monitor transmission temperature regularly
- Update transmission control software as needed
- Address unusual noises or vibrations promptly
Search Specifications
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Transmission Specifications
Overview
- Type
- 6-speed automatic
- Configuration
- Longitudinal
- Platform
- A650E
- Material
- Aluminum alloy casing
- Location
- Rear-wheel drive configuration
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
- 7.5 quarts (7.1 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- High-strength steel
- Clutch Packs
- Carbon fiber composite
- Seals
- Viton rubber
Features
- Shifting
-
- Sequential shift mode
- Adaptive shift control
- Manual override
- Sport mode
- Cooling
-
- Integrated transmission cooler
- Thermal management system
- Fluid temperature sensor
- Durability
-
- Reinforced gear teeth
- High-torque capacity
- Corrosion-resistant coating
- Performance
-
- Smooth shift transitions
- Quick response to throttle input
- Optimized gear ratios
- Electronics
-
- ECU-controlled shifting
- CAN bus integration
- Diagnostic port
Safety Features
- Fail Safe
-
- Limp-home mode
- Overheat protection
- Fluid pressure monitoring
- Mechanical
-
- Shear pin protection
- Torque converter lockup
Comfort Features
- Noise Reduction
-
- Helical gear design
- Vibration dampening mounts
- Smoothness
-
- Adaptive shift logic
- Torque converter tuning
- Convenience
-
- Paddle shifters
- Auto-hold function
Accessories
- Upgrades
-
- Performance shift kit
- High-capacity cooler
- Synthetic transmission fluid
- Tools
-
- Transmission jack adapter
- Fluid exchange pump
- Diagnostic scanner
- Replacement Parts
-
- Filter kit
- Gasket set
- Seal kit
Maintenance
- Service interval
- Every 60,000 miles or 60 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Shift solenoid check
- Torque converter inspection
- ECU software update
- Maintenance Notes
- Use only manufacturer-recommended fluids and parts
Warranty
- Basic
- Miles: 60,000Years: 5Coverage: Parts and labor
- Powertrain
- Miles: 100,000Years: 7Coverage: Transmission components
- Corrosion
- Miles: UnlimitedYears: 10Coverage: Casing and seals
- Extended
- Miles: 120,000Years: 10Coverage: Optional extended coverage
Production Details
- Manufacturer
- Aisin Seiki Co., Ltd.
- Manufacturing Process
-
- CNC machining
- Heat treatment
- Precision assembly
- Quality Control
- Testing: Durability testing, Shift performance testing, Leak testingStandards: ISO 9001 certified
- Sustainability Practices
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction initiatives
- Production Metrics
- Annual Output: 150,000 unitsDefect Rate: 0.02%
Service Information for a650 transmission Service
Maintenance and service requirements specific to this component
- Inspect fluid level and condition
- Check for leaks
- Test shift performance
- Update ECU software
Ensure fluid is at operating temperature during inspection
- Replace transmission fluid and filter
- Inspect clutch packs
- Check torque converter operation
- Test shift solenoids
Use only manufacturer-approved fluid
- Complete transmission overhaul
- Replace seals and gaskets
- Inspect and replace worn gears
- Test and recalibrate ECU
Requires specialized tools and equipment
Common Questions
Find answers to common questions about torque specifications
Q1 Is the A650 transmission compatible with other Lexus models?
Is the A650 transmission compatible with other Lexus models?
The A650 transmission is specifically designed for the 2002-2010 Lexus SC models, including the SC 430. While it shares some design elements with other Lexus transmissions, it is not directly compatible with other models due to differences in mounting points, electronics, and torque specifications. Always verify compatibility with your vehicle's VIN before attempting any installation.
Q2 What are the maintenance requirements for the A650 transmission?
What are the maintenance requirements for the A650 transmission?
The A650 transmission requires regular maintenance to ensure optimal performance. This includes fluid changes every 60,000 miles, inspection of the transmission pan for leaks, and replacement of the transmission filter. Additionally, the transmission control module should be checked for software updates periodically. Neglecting maintenance can lead to premature wear and potential failure.
Q3 How do I replace the A650 transmission in my Lexus SC?
How do I replace the A650 transmission in my Lexus SC?
Replacing the A650 transmission involves several steps: 1) Disconnect the battery and remove the transmission mount. 2) Drain the transmission fluid and disconnect all electrical connectors. 3) Remove the driveshaft and exhaust components. 4) Support the transmission with a jack and unbolt it from the engine. 5) Install the new transmission in reverse order, ensuring all connections are secure. Always refer to the service manual for detailed instructions.
Q4 What should I do if my A650 transmission is slipping or shifting hard?
What should I do if my A650 transmission is slipping or shifting hard?
If your A650 transmission is slipping or shifting hard, start by checking the transmission fluid level and condition. Low or dirty fluid can cause these issues. If the fluid is fine, inspect the transmission control module for error codes using a diagnostic tool. Common solutions include replacing the solenoid pack, updating the transmission software, or performing a fluid flush. If problems persist, consult a professional technician.
Q5 How can I optimize the performance of my A650 transmission?
How can I optimize the performance of my A650 transmission?
To optimize the performance of your A650 transmission, ensure regular maintenance, including fluid changes and filter replacements. Use only manufacturer-recommended transmission fluid. Consider installing a transmission cooler if you frequently drive in hot climates or tow heavy loads. Additionally, updating the transmission control module software can improve shift quality and responsiveness. Avoid aggressive driving to reduce wear and tear.
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 SC 430 A650 Transmission Service Manual
Coming SoonThis manual provides detailed instructions for servicing and repairing the A650 transmission, including disassembly, reassembly, and troubleshooting procedures.
A650 Transmission Technical Service Bulletin
Coming SoonThis bulletin addresses common issues and updates for the A650 transmission, including software updates and recommended repair procedures.
Lexus SC 430 Transmission Parts Catalog
Coming SoonThis catalog lists all available parts and accessories for the A650 transmission, including part numbers and compatibility information.
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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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