Audi Audi RS4 2018-present

Audi Audi RS4 2018-present HVAC Specifications

Detailed technical specifications and performance metrics for the HVAC system in the 2018-Present Audi RS4. Includes component details, refrigerant types, control mechanisms, and diagnostic procedures.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the HVAC specifications for the 2018-Present Audi RS4, including key features, measurements, and technical details. This section provides detailed insights into the heating, ventilation, and air conditioning system, ensuring optimal performance and comfort.

How to Use

Use the search function to locate specific HVAC specifications by entering keywords such as 'blower motor', 'refrigerant capacity', or 'temperature control'. Use exact terms for precise results.

Navigate through the HVAC documentation sections using the table of contents. Each major section is divided into subsections for easy access to specific technical details.

Key Specifications

Refrigerant Type

R1234yf

Refrigerant Capacity

525 ± 25 g

Heater Core Output

6.5 kW at 90°C

Cabin Air Filter Efficiency

99.7%

Temperature Control Range

16°C to 30°C (60.8°F to 86°F)

Available Specifications

Climate Control System

Details about the advanced climate control system in the Audi RS4, including dual-zone temperature control, air distribution, and system components.

Dual-Zone Temperature Control

Independent temperature control for driver and front passenger
Temperature range: 16°C to 30°C (60.8°F to 86°F)
Precision control with 0.5°C increments
Automatic climate control with humidity sensor

Air Distribution System

Four-zone air distribution: face, footwell, windshield, and side vents
Adjustable airflow intensity with 7-speed blower motor
Automatic air recirculation mode with pollutant sensor
Defrost function for windshield and side windows

Note: The air distribution system is optimized for rapid cabin temperature adjustment.

Heating and Cooling Components

Technical specifications of the heating and cooling components, including the heater core, evaporator, and refrigerant system.

Heater Core Specifications

High-efficiency aluminum heater core
Heat output: 6.5 kW at 90°C coolant temperature
Compact design for space optimization
Integrated temperature control valve

Refrigerant System

Refrigerant type: R1234yf
Refrigerant capacity: 525 ± 25 g
Evaporator temperature range: 2°C to 10°C (35.6°F to 50°F)
High-pressure cut-off: 32 bar (464 psi)

Note: The refrigerant system is designed for eco-friendly operation and compliance with global standards.

HVAC Electrical Components

Information about the electrical components of the HVAC system, including sensors, actuators, and control modules.

Temperature Sensors

Interior temperature sensor accuracy: ±0.5°C
Exterior temperature sensor range: -40°C to 85°C (-40°F to 185°F)
Solar radiation sensor for automatic climate adjustment
Humidity sensor for defogging control

Actuators and Control Modules

Stepper motor actuators for air flap control
PWM-controlled blower motor with 7-speed settings
Integrated HVAC control module with CAN bus communication
Diagnostic interface for system troubleshooting

Note: The HVAC control module supports over-the-air updates for enhanced functionality.

Maintenance and Service

Guidelines for maintaining and servicing the HVAC system, including filter replacement, refrigerant recharge, and system diagnostics.

Cabin Air Filter

Dual-layer activated carbon filter
Replacement interval: 15,000 km or 12 months
Filter dimensions: 250 mm x 200 mm x 25 mm
Particle filtration efficiency: 99.7%

Refrigerant Recharge

Recommended refrigerant pressure: 8-10 bar (116-145 psi) at 25°C
Recharge interval: As per system diagnostics
Use only R1234yf refrigerant
Vacuum and recharge procedure requires specialized equipment

Note: Improper refrigerant handling can damage the system and void the warranty.

Search Specifications

Search by specification name, value, or description

Component Specifications

General Specifications

System Type: Automatic Dual-Zone Climate Control

Refrigerant Type: R1234yf

Refrigerant Capacity: 500 ± 20 g

Compressor Type: Variable Displacement

Blower Motor Power: 200 W

Airflow Capacity: 1200 m³/h

Temperature Control

Temperature Range: 16°C to 30°C

Temperature Resolution: 0.5°C

Sensor Accuracy: ±0.5°C

Auto Mode Response Time: 5-10 minutes

Air Distribution

Vent Modes

Face
Foot
Defrost
Combination

Airflow Direction Adjustment: Manual and Automatic

Recirculation Mode: Automatic and Manual

Air Quality Sensor: Integrated PM2.5 and VOC Sensor

Heating System

Heater Core Type: Aluminum

Heater Core Capacity: 5.5 kW

Coolant Flow Rate: 10 L/min

Auxiliary Heater: Electric PTC Heater

Auxiliary Heater Power: 1.5 kW

Cooling System

Evaporator Type: Plate and Fin

Evaporator Capacity: 4.2 kW

Condenser Type: Parallel Flow

Condenser Capacity: 6.0 kW

Expansion Valve Type: Thermostatic

Filters

Cabin Air Filter Type: Combination Particle and Activated Carbon

Cabin Air Filter Part Number: 4M0819439

Filter Replacement interval: 15,000 miles or 12 months

Pollen Filter Efficiency: 99% at 0.3 microns

Electrical Specifications

System Voltage: 12 V DC

Compressor Clutch Power: 60 W

Blower Motor Current: 16 A

Control Module Part Number: 8W0907044

Fuse Rating: 40 A

Diagnostic Specifications

Diagnostic interface: ODB-II

Fault Codes

B10A0
B10A1
B10A2

Self Diagnosis Mode: Integrated in MMI System

Sensor Failure Detection: Automatic

Maintenance Specifications

Refrigerant Recharge interval: Every 2 years or 24,000 miles

System Pressure Check: Annual

Lubricant Type: PAG Oil

Lubricant Quantity: 150 ± 10 ml

Leak Test interval: Every 12 months

Safety Specifications

High Pressure Cutoff: 32 bar

Low Pressure Cutoff: 1.5 bar

Overheat Protection: Thermal Fuse at 120°C

Short Circuit Protection: Integrated in Control Module

Service Information Service

Detailed service requirements and schedules for the HVAC system

15,000

Replace cabin air filter
Check refrigerant level
Inspect compressor and belts

Ensure all connections are secure and free of leaks

30,000

Recharge refrigerant
Inspect and clean evaporator and condenser
Check electrical connections

Use only Audi-approved refrigerant and lubricants

60,000

Replace blower motor if necessary
Inspect and replace expansion valve if needed
Perform full system diagnostic

Ensure all sensors are calibrated correctly

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the refrigerant type and capacity for the 2018-Present Audi RS4 HVAC system?

The HVAC system in the 2018-Present Audi RS4 uses R-1234yf refrigerant, with a total system capacity of approximately 525 grams (18.5 ounces). This refrigerant is environmentally friendly and complies with EU regulations.

How does the dual-zone automatic climate control system work in the Audi RS4?

The dual-zone automatic climate control system allows the driver and front passenger to set individual temperature preferences. The system uses multiple sensors, including interior temperature sensors, sunlight sensors, and humidity sensors, to maintain the desired climate. The temperature range is adjustable from 16°C (60.8°F) to 28°C (82.4°F) in 0.5°C increments.

What is the airflow rate of the HVAC system in the Audi RS4?

The HVAC system in the Audi RS4 can deliver a maximum airflow rate of up to 12.5 cubic meters per minute (442 cubic feet per minute) when the system is set to the highest fan speed. This ensures rapid cooling or heating of the cabin.

How do I reset the HVAC system in my Audi RS4?

To reset the HVAC system, turn the ignition on but do not start the engine. Set the temperature to maximum heat and the fan speed to the lowest setting. Press and hold the recirculation button for 5 seconds until the system resets. This procedure clears any stored error codes and recalibrates the system.

What are the maintenance intervals for the HVAC system in the Audi RS4?

Audi recommends inspecting the HVAC system every 15,000 miles or 12 months, whichever comes first. This includes checking the refrigerant level, cleaning or replacing the cabin air filter, and inspecting the system for leaks or damage. Regular maintenance ensures optimal performance 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.

Audi RS4 HVAC System Service Manual

Coming Soon

Official service manual detailing the HVAC system components, maintenance procedures, and troubleshooting steps for the 2018-Present Audi RS4.

Refrigerant Handling and Safety Guidelines

Coming Soon

Comprehensive guide on handling R-1234yf refrigerant, including safety precautions, proper disposal methods, and equipment requirements.

Cabin Air Filter Replacement Guide

Coming Soon

Step-by-step instructions for replacing the cabin air filter in the 2018-Present Audi RS4, including tools required and safety tips.

Audi HVAC System Troubleshooting

Coming Soon

Detailed troubleshooting guide for common HVAC system issues in the Audi RS4, including error codes and diagnostic procedures.

About the Author

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