Audi Audi S3 1999-2003 HVAC Specifications
Detailed HVAC specifications for the 1999-2003 Audi S3, including heating, ventilation, and air conditioning system components and service requirements.
1999-2003 Audi S3 HVAC Specifications Overview Specifications
This document provides a comprehensive overview of the HVAC (Heating, Ventilation, and Air Conditioning) system specifications for the 1999-2003 Audi S3. It includes detailed technical information, key components, and operating parameters. Use this guide for reference when performing maintenance, repairs, or upgrades to the HVAC system. The document is organized into sections for easy navigation, with detailed subsections covering specific aspects of the system.
How to Use
To find specific information, use the search functionality by typing keywords such as 'compressor,' 'heater core,' or 'refrigerant.' This will help you quickly locate relevant sections and details.
Navigate through the document by selecting sections from the table of contents. Each section contains subsections with detailed technical specifications and components. Use the quick reference section for key specifications at a glance.
Key Specifications
Compressor Type
Swashplate with variable displacement
Refrigerant Type
R-134a
Heater Core Power
Up to 35 kW
Air Flow Rate
Up to 400 m3/h
Refrigerant Charge
550 ± 50 grams
Available Specifications
HVAC System Overview
This section provides a general overview of the Audi S3 HVAC system, including its components, functionality, and key features. It serves as a starting point for understanding the system's architecture and operation.
HVAC System Overview
This section provides a general overview of the Audi S3 HVAC system, including its components, functionality, and key features. It serves as a starting point for understanding the system's architecture and operation.
System Components
- Compressor: Swashplate type with electronic control
- Condenser: Tube-and-fin design with integrated sub-cooler
- Evaporator: Plate-and-fin design with expansion valve
- Heater Core: Crossflow type with dual heating circuits
- Control Module: Electronic control unit (ECU) for automatic climate control
System Features
- Automatic climate control (ACC) with dual-zone functionality
- Air quality sensor for automatic recirculation
- Cabin air filter with activated charcoal
- Rear seat heating ducts (optional)
- Electronic blower control with variable speed
Heating System Specifications
This section details the specifications and operational parameters of the heating system, including the heater core, valves, and ductwork.
Heating System Specifications
This section details the specifications and operational parameters of the heating system, including the heater core, valves, and ductwork.
Heater Core and Valve
- Heater core type: Crossflow, aluminum core
- Heater core dimensions: 200mm x 100mm x 50mm
- Water valve type: Electrically controlled, 2-way
- Maximum water flow rate: 2.5 liters per minute
- Heating capacity: Up to 35 kW
Heating Ducts and Vents
- Duct material: Polypropylene with insulation
- Vent outlet types: Dashboard, floor, and rear seat (optional)
- Airflow control: Electronic and manual modes
- Dust and pollen filter: Integrated in the HVAC module
- Heater fan motor speed: 5-speed with electronic control
Air Conditioning System Specifications
This section provides detailed specifications for the air conditioning system, including the compressor, condenser, evaporator, and refrigerant.
Air Conditioning System Specifications
This section provides detailed specifications for the air conditioning system, including the compressor, condenser, evaporator, and refrigerant.
Compressor and Condenser
- Compressor type: Swashplate with variable displacement
- Compressor power consumption: Up to 2.5 kW
- Condenser size: 600mm x 300mm x 30mm
- Condenser cooling fan: Dual-speed, electrically controlled
- Refrigerant type: R-134a
- Refrigerant charge quantity: 550 ± 50 grams
Evaporator and Coils
- Evaporator type: Plate-and-fin with expansion valve
- Evaporator size: 300mm x 200mm x 50mm
- Coil material: Aluminum with anti-corrosion coating
- Expansion valve type: Electronic expansion valve (EXV)
- Evaporator fan speed: Variable, controlled by ECU
- Defrost mode: Automatic with temperature sensor
Control Systems
This section covers the electronic and mechanical controls of the HVAC system, including sensors, actuators, and the control module.
Control Systems
This section covers the electronic and mechanical controls of the HVAC system, including sensors, actuators, and the control module.
Climate Control Unit
- Control module type: Electronic Control Unit (ECU)
- Control interface: Manual controls with LCD display
- Sensors: Temperature, humidity, and air quality
- Actuators: Electric motors for damper control
- Communication: CAN bus integration with other vehicle systems
- Diagnostic capability: OBD-II compliant
Sensors and Actuators
- Temperature sensors: Cabin, evaporator, and condenser
- Humidity sensor: Integrated in the climate control unit
- Air quality sensor: Gas sensor for automatic recirculation
- Blower motor: 5-speed with electronic control
- Damper actuators: Electric motors for air distribution
- Refrigerant pressure sensors: High and low pressure
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Component Specifications
Overview
- Type
- Manual Climate Control System
- Configuration
- Single-Zone Manual HVAC
- Platform
- Audi A3 (8L)
- Material
- Plastic and Metal Components
- Location
- Center Dashboard
Dimensions
- Overall Dimensions
- 12 in x 10 in x 6 in
- Dashboard Vent Size
- 5 in x 3 in
- Evaporator Core Dimensions
- 12 in x 8 in x 2 in
- Heater Core Dimensions
- 10 in x 6 in x 2 in
- Air Filter Size
- 8 in x 8 in
- Ducting Diameter
- 3 in
- Blower Motor Size
- 6 in
Materials
- Hvac Housing
- High-Density Polypropylene
- Ducting
- Flexible PVC
- Dashboard Vents
- ABS Plastic
- Heater Core
- Copper/Aluminum
- Evaporator Core
- Aluminum
Features
- Airflow Control
-
- Variable Fan Speed
- Directional Vents
- Recirculation Mode
- Temperature Control
-
- Manual Thermostat
- Heater Switch
- Air Conditioning Switch
- Defrost Function
- Air Quality
-
- Cabin Air Filter
- Pollen Filter
- Dust and Odor Filter
- Distribution System
-
- Front Ventilation
- Rear Seat Ducts
- Floor Vents
- Blower Motor
-
- Variable Speed
- High Airflow Capacity
- Low Noise Operation
- Control Panel
-
- Manual Knobs
- Push Buttons
- LCD Display
- Diagnostics
-
- Self-Diagnostic Testing
- Error Code Display
- System Monitoring
Safety Features
- Overheat Protection
-
- Thermal Limit Switch
- Temperature Sensor
- Overheat Alarm
- Pressure Relief
-
- Safety Relief Valve
- Pressure Sensor
- Electrical Protection
-
- Fuse Protection
- Circuit Breaker
- Short-Circuit Protection
Comfort Features
- Climate Control
-
- Automatic Recirculation
- Air Conditioning
- Defrost Mode
- Air Purification
-
- Cabin Air Filter
- Pollen Filter
- Activated Carbon Filter
- Ventilation
-
- Fresh Air Mode
- Recirculation Mode
- Window Sensor
- Control Panel
-
- Ergonomic Design
- Intuitive Controls
- Backlit Buttons
- Quiet Operation
-
- Noise-Reducing Insulation
- Silent Blower Motor
Accessories
- Replacement Parts
-
- Air Filter
- Blower Motor
- Climate Control Switch
- Upgrades
-
- Digital Climate Control
- Heated Seat Integration
- Air Quality Sensor
- Maintenance Accessories
-
- HVAC Cleaning Kit
- Duct Cleaning Brush
- Refrigerant Recharge Kit
Maintenance
- Service interval
- Every 15,000 miles or 12 months
- Service Items
-
- Replace Air Filter
- Inspect Ducts
- Clean Vents
- Check Refrigerant Level
- Test Heater Core
- Inspect Blower Motor
- Maintenance Notes
-
- Clean the dashboard vents regularly
- Ensure proper airflow for efficient cooling
- Check for any refrigerant leaks
- Replace worn-out seals and gaskets
Warranty
- Basic
- Miles: 36,000 milesYears: 3 yearsCoverage: Parts and Labor
- Powertrain
- Miles: 60,000 milesYears: 5 yearsCoverage: HVAC Components Only
- Corrosion
- Miles: UnlimitedYears: 12 yearsCoverage: Perforation Only
- Maintenance
- Miles: 24,000 milesYears: 2 yearsCoverage: Maintenance Services
Production Details
- Manufacturer
- Audi AG
- Manufacturing Process
-
- Injection Molding
- Metal Stamping
- Welding
- Assembly Line Production
- Quality Control
- inspection: Automated and ManualTesting: Functional and PerformanceCertifications: ISO 9001:2015
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Manufacturing
- Emission Reduction
- Production Metrics
- Units Per Year: 50,000 unitsFailure Rate: <1%Warranty Claims: Low
Service Information for HVAC Service
Maintenance and service requirements specific to this component
- Replace cabin air filter
- Inspect and clean air ducts
- Check HVAC control panel functions
- Test heater and AC operation
- Inspection of all HVAC components
Ensure all functions are operating within specifications
- Deep clean HVAC system
- Check refrigerant level and top up if necessary
- Inspect blower motor and fan
- Test thermostat operation
- Inspect heater core and hoses
Special attention to refrigerant handling required
- Replace blower motor if necessary
- Overhaul heater core
- Replace worn-out ducts
- Inspect and replace seals and gaskets
- Performance testing of HVAC system
Critical to follow proper procedures to avoid system damage
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the HVAC system in the 1999-2003 Audi S3?
What are the technical specifications of the HVAC system in the 1999-2003 Audi S3?
The HVAC system in the 1999-2003 Audi S3 features a dual-zone climate control with automatic temperature regulation. It includes a compressor, condenser, evaporator, and heater core. The system is compatible with R-134a refrigerant and integrates with the vehicle's electronic control unit. For optimal performance, ensure all components are OEM-compliant.
Q2 What maintenance is required for the HVAC system?
What maintenance is required for the HVAC system?
Regular maintenance includes replacing the cabin air filter every 15,000 miles and checking refrigerant levels annually. Inspect hoses and connections for leaks every 30,000 miles and ensure the condenser is clean. Replacing the pollen filter every 30,000 miles and checking electrical connections yearly is also recommended.
Q3 How do I replace the heater core in the HVAC system?
How do I replace the heater core in the HVAC system?
To replace the heater core, start by draining the coolant. Remove the dashboard trim and disconnect electrical connectors. Take out the heater core from the dashboard and install the new one, ensuring all connections are secure. Reconnect electrical components and refill coolant. Bleed the system to remove air pockets.
Q4 What if the HVAC system isn't heating or cooling properly?
What if the HVAC system isn't heating or cooling properly?
Check the cabin air filter for blockages and ensure the blower motor is functioning. Verify that the temperature control module is operating correctly and that all air doors are moving freely. Inspect for refrigerant leaks and ensure the compressor is engaging. Consult a professional if issues persist.
Q5 How can I optimize the HVAC system's performance?
How can I optimize the HVAC system's performance?
Ensure cabin and pollen filters are clean for optimal airflow. Regularly clean the condenser and ensure proper refrigerant levels. Check for any blockages in air ducts and ensure all electrical connections are secure. Upgrading to high-performance components can enhance cooling and heating efficiency.
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 S3 HVAC Service Manual (1999-2003)
Coming SoonComprehensive guide covering diagnostics, repairs, and system overview.
Technical Bulletin: Heater Core Replacement
Coming SoonDetails on common issues and replacement procedures for the heater core.
Audi S3 HVAC Parts Catalog
Coming SoonList of components and part numbers for the HVAC system.
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Technical Information
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