Audi Audi A4 2005-2008 AL450 Transmission Specifications
Comprehensive technical specifications and service details for the AL450 transmission system used in the 2005-2008 Audi A4. This document covers gear ratios, torque capacity, fluid requirements, maintenance intervals, and diagnostic procedures specific to the AL450 transmission.
AL450 Transmission Specifications Overview Specifications
This document provides detailed specifications and technical information for the AL450 transmission used in the 2005-2008 Audi A4. It covers key features, technical details, and maintenance guidelines to help users understand and work with this transmission system effectively.
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Key Specifications
Transmission Type
6-speed automatic (AL450)
Torque Capacity
Up to 229 lb-ft (310 Nm)
Fluid Capacity
3.5 quarts (3.3 liters)
Weight
Approximately 154 lbs (69.85 kg)
Fluid Type
Audi-approved ATF (Automatic Transmission Fluid)
Available Specifications
Transmission Overview
This section provides a general overview of the AL450 transmission, including its key features and design characteristics.
Transmission Overview
This section provides a general overview of the AL450 transmission, including its key features and design characteristics.
General Information
- The AL450 is a 6-speed automatic transmission designed for longitudinal engine layouts.
- It is specifically engineered for use in Audi A4 models from 2005 to 2008.
- Features a torque converter for smooth power delivery.
- Includes a lock-up clutch for improved fuel efficiency at higher speeds.
- Designed to work seamlessly with Audi's Quattro all-wheel-drive system.
Key Features
- Adaptive shift strategy based on driving conditions.
- Manual shift mode for driver control.
- Integrated transmission control module (TCM).
- High-strength gear sets for durability.
- Optimized for both performance and fuel efficiency.
Technical Specifications
This section provides detailed technical specifications and measurements for the AL450 transmission.
Technical Specifications
This section provides detailed technical specifications and measurements for the AL450 transmission.
Transmission Details
- Transmission type: 6-speed automatic (AL450).
- Number of gears: 6 forward, 1 reverse.
- Torque capacity: Up to 229 lb-ft (310 Nm).
- Weight: Approximately 154 lbs (69.85 kg).
- Fluid capacity: 3.5 quarts (3.3 liters).
Performance Capabilities
- Maximum engine speed: 6,500 RPM.
- Optimized for engines up to 2.0L displacement.
- Compatible with both gasoline and diesel engines.
- Features a wide gear ratio spread for optimal acceleration and cruising.
- Built-in overdrive for reduced engine load at highway speeds.
Maintenance and Service
This section outlines the recommended maintenance and service procedures for the AL450 transmission.
Maintenance and Service
This section outlines the recommended maintenance and service procedures for the AL450 transmission.
Recommended Maintenance
- Transmission fluid change every 30,000 to 60,000 miles.
- Inspect transmission pan gasket every 15,000 miles.
- Check transmission mounts for wear and tear annually.
- Flush and replace transmission fluid cooler lines as needed.
- Monitor transmission temperature during extreme driving conditions.
Common Issues and Solutions
- Slipping or hesitation: Check fluid level and condition.
- Unusual noises: Inspect for worn or damaged components.
- Harsh shifting: Update TCM software or replace solenoid pack.
- Leaking fluid: Replace transmission pan gasket or seals.
- Overheating: Check cooler lines and radiator functionality.
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Transmission Specifications
Overview
- Type
- 6-speed automatic transmission
- Configuration
- Longitudinal front-wheel drive
- Platform
- Audi B7 platform (A4)
- Torque Capacity
- 229 lb-ft (310 Nm)
- Material
- Aluminum alloy case
Dimensions
- Length
- 28.5 inches (723 mm)
- Width
- 18.1 inches (460 mm)
- Height
- 10.2 inches (259 mm)
- Weight
- 209 lbs (94.8 kg)
- Oil Capacity
- 3.5 quarts (3.3 liters)
- Gear Ratio Range
- 1st: 4.171, 2nd: 2.531, 3rd: 1.678, 4th: 1.229, 5th: 1.000, 6th: 0.738
Materials
- Transmission Case
- Aluminum alloy
- Gears
- High-strength steel
- Bearings
- High-carbon steel with tribological coatings
- Torque Converter
- Steel housing with rubber insert
- Cooler Lines
- Steel braided hoses
Features
- Adaptive Shifting
- Yes, with dynamic shift programming
- Lock-Up Torque Converter
- Yes, electronically controlled
- Gear Ratios
-
- 1st: 4.171
- 2nd: 2.531
- 3rd: 1.678
- 4th: 1.229
- 5th: 1.000
- 6th: 0.738
- Modes Of Operation
-
- Normal
- Sport
- Manual
- Clutch Packs And Bands
-
- 3 clutch packs
- 2 brake bands
- 1 torque converter clutch
Safety Features
- Overload Protection
-
- Torque limiter
- Overheat protection system
- Fail-Safe Mode
- Default to neutral if critical failure detected
- Emergency Operation
- Manual override capability
Comfort Features
- Smooth Shifting
-
- Adaptive shift strategy
- Throttle-blip downshifts in manual mode
- Noise Reduction
-
- Helical gears with noise-reducing coatings
- Transmission mounts with damping
- Driver Modes
-
- Comfort
- Auto
- Dynamic
Accessories
- Transmission Pan
-
- Aluminum alloy pan
- Drain plug
- Temperature sensor
- Torque Converter
-
- Stock torque converter
- Bolt kit
- Converter housing
- Cooler Lines And Mounts
-
- Steel cooler lines
- Transmission mount
- Crossmember
Maintenance
- Service interval
- Every 30,000 miles or 2 years
- Service Items
-
- Transmission fluid change
- Filter replacement
- Pan gasket replacement
- Inspect cooler lines
- Check transmission mounts
- Maintenance Notes
- Use Audi-approved ATF fluid only. Replace filter every 2nd fluid change.
Warranty
- Basic Warranty
- Miles: 50000Years: 4Coverage: Bumper-to-bumper
- Powertrain Warranty
- Miles: 70000Years: 5Coverage: Drivetrain components
- Corrosion Warranty
- Miles: 120000Years: 12Coverage: Perforation only
- Roadside Assistance
- Miles: 50000Years: 4Coverage: 24/7 service
Production Details
- Manufacturer
- Audi AG
- Manufacturing Process
-
- CNC machining
- Robotic assembly
- Laser welding
- Heat treatment
- Quality Control
- inspectio: Visual and dimensional inspectionTesting: Functional testingCertification: ISO 9001:2015
- Sustainability Practices
- Recyclable materials, energy-efficient production
- Production Metrics
- Units Per Year: 50000Cycle Time: 6 hours per unit
Service Information for AL450 Transmission Service
Maintenance and service requirements specific to the AL450 transmission
- Inspect transmission fluid level
- Check for leaks
- Test transmission operation
- Inspect cooler lines
Recommended before extreme weather changes
- Replace transmission fluid
- Inspect transmission pan gasket
- Check transmission mounts
- Inspect torque converter
Use Audi-approved ATF fluid only
- Replace transmission filter
- Inspect clutch packs
- Check solenoid pack
- Inspect gear sets
Recommended before major trips or heavy use
Common Questions
Find answers to common questions about torque specifications
Q1 What type of transmission is the AL450 in the 2005-2008 Audi A4?
What type of transmission is the AL450 in the 2005-2008 Audi A4?
The AL450 is a 6-speed automatic transmission (Tiptronic) with a torque converter, designed for longitudinal engine configurations. It supports a maximum torque of 450 Nm and is paired with Audi's quattro all-wheel-drive system.
Q2 What is the recommended transmission fluid for the AL450?
What is the recommended transmission fluid for the AL450?
Audi recommends using G 055 005 A2 transmission fluid, which is a synthetic oil specifically formulated for the AL450. The fluid capacity is approximately 7.5 liters, but always check the dipstick or service manual for exact levels after a fluid change.
Q3 How often should the AL450 transmission fluid be changed?
How often should the AL450 transmission fluid be changed?
Audi does not specify a fixed interval for transmission fluid changes under normal conditions. However, for severe driving conditions (e.g., frequent towing, stop-and-go traffic), it is recommended to change the fluid every 60,000 miles (96,000 km). Always consult the owner's manual or a certified technician.
Q4 What are the common symptoms of AL450 transmission failure?
What are the common symptoms of AL450 transmission failure?
Common symptoms include delayed or rough shifting, transmission slipping, unusual noises (e.g., whining or grinding), and the transmission warning light illuminating. These issues may indicate low fluid levels, worn clutch packs, or solenoid valve problems.
Q5 Can the AL450 transmission be repaired, or does it require replacement?
Can the AL450 transmission be repaired, or does it require replacement?
The AL450 transmission can often be repaired, depending on the issue. Common repairs include replacing solenoid valves, clutch packs, or the torque converter. However, severe damage may require a complete transmission replacement. Always consult a certified Audi technician for diagnosis.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Audi AL450 Transmission Service Manual
Coming SoonOfficial service manual for the AL450 transmission, including detailed repair procedures, torque specifications, and diagnostic codes.
Audi Transmission Fluid Guide
Coming SoonComprehensive guide on selecting and replacing transmission fluid for Audi vehicles, including the AL450.
AL450 Transmission Troubleshooting Guide
Coming SoonStep-by-step troubleshooting guide for common AL450 transmission issues, including diagnostic codes and repair tips.
Audi Genuine Parts Catalog
Coming SoonOfficial catalog for genuine Audi transmission parts, including AL450 components like solenoids, clutch packs, and gaskets.
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General 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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