Audi Audi S4 2016-present

Audi Audi S4 2016-present HVAC Specifications

Detailed technical specifications for the HVAC system in the 2016-Present Audi S4, including component details, performance metrics, and diagnostic procedures.

Updated Oct 14, 2023

Overview Specifications

Comprehensive description of the HVAC specifications for the 2016-Present Audi S4, 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 detailed technical information.

Key Specifications

Refrigerant Capacity

500 grams (17.6 oz)

Heater Core Capacity

2.5 liters

Blower Motor Airflow

650 CFM

Compressor Pressure Range

150-300 psi (10.3-20.7 bar)

Temperature Control Range

60°F to 84°F (16°C to 29°C)

Available Specifications

Climate Control System

Details about the advanced climate control system in the Audi S4, including dual-zone automatic temperature control and air distribution features.

Dual-Zone Automatic Climate Control

Independent temperature control for driver and front passenger
Temperature range: 60°F to 84°F (16°C to 29°C)
Automatic air recirculation with humidity sensor
Solar sensor for automatic adjustment based on sunlight intensity
Air quality sensor for automatic air recirculation

Air Distribution System

Four-zone air distribution: face, footwell, windshield, and side vents
Adjustable airflow intensity with 7-speed blower motor
Automatic defrost function for windshield and side windows
Rear seat ventilation ducts for passenger comfort

Note: The blower motor operates at a maximum airflow rate of 650 CFM (cubic feet per minute).

Heating and Cooling Components

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

Heater Core Specifications

Heater core capacity: 2.5 liters
Maximum coolant temperature: 230°F (110°C)
Heating output: 6.5 kW at full load
Dual-pass design for efficient heat transfer

Refrigerant System

Refrigerant type: R-1234yf
Refrigerant capacity: 500 grams (17.6 oz)
Compressor type: Variable displacement
Evaporator temperature range: 35°F to 45°F (2°C to 7°C)
Condenser pressure: 150-300 psi (10.3-20.7 bar)

Note: The R-1234yf refrigerant is environmentally friendly with a low global warming potential (GWP).

HVAC Electrical Components

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

Temperature Sensors

Interior temperature sensor accuracy: ±1°F (±0.5°C)
Exterior temperature sensor range: -40°F to 140°F (-40°C to 60°C)
Solar sensor sensitivity: 0-1000 W/m²
Humidity sensor range: 10-90% RH

Actuators and Control Modules

Blower motor power consumption: 150W at maximum speed
Actuator response time: < 2 seconds
Control module operating voltage: 12V DC
CAN bus communication for system integration

Note: The HVAC control module is integrated with the vehicle's infotainment system for seamless operation.

Search Specifications

Search by specification name, value, or description

Component Specifications

General Specifications

System Type: Automatic dual-zone climate control

Refrigerant Type: R-1234yf

Refrigerant Capacity: 500 ± 20 g

Compressor Type: Variable displacement swash plate

Blower Motor Type: Brushless DC motor

Air Filter Type: Cabin air filter with activated carbon

Temperature Control

Temperature Range: 16°C to 30°C (60.8°F to 86°F)

Temperature Resolution: 0.5°C (0.9°F)

Dual Zone Difference Limit: 4°C (7.2°F)

Sensor Accuracy: ±0.5°C (±0.9°F)

Airflow Specifications

Blower Motor Speed Range: 0 to 12 levels

Max Airflow Rate: 600 m³/h

Air Distribution Modes

Face
Footwell
Defrost
Combination

Recirculation Mode Airflow Reduction: 30%

Heating System

Heater Core Type: Aluminum

Heater Core Capacity: 5.5 kW

Coolant Flow Rate: 10 L/min

Max Heating Output: 7 kW

Cooling System

Evaporator Type: Plate-fin

Evaporator Capacity: 3.5 kW

Condenser Type: Parallel flow

Condenser Capacity: 6 kW

Compressor Displacement: 120 cc/rev

Electrical Specifications

System Voltage: 12 V DC

Compressor Power Consumption: 400 W

Blower Motor Power Consumption: 150 W

Control Module Power Consumption: 10 W

Sensors And Controls

interior Temperature Sensor Part Number: 8W0820431

Exterior Temperature Sensor Part Number: 8W0820432

Sunload Sensor Part Number: 8W0820433

Humidity Sensor Part Number: 8W0820434

Control Module Part Number: 8W0820435

Maintenance Specifications

Cabin Air Filter Replacement Interval: 15,000 miles or 12 months

Refrigerant Recharge interval: As needed, based on system performance

Compressor Oil Check interval: 50,000 miles or 48 months

System Leak Test interval: Every 2 years

Diagnostic Specifications

Fault Code Readout: Via OBD-II port

Common Fault Codes

B10A0
B10A1
B10A2

Diagnostic Tool Requirements: Audi-specific scan tool (VAS 6154 or equivalent)

Pressure Test Range: Low side: 1.5 to 2.5 bar, High side: 10 to 15 bar

Safety Specifications

High Pressure Cutoff: 30 bar

Low Pressure Cutoff: 1 bar

Compressor Oil Type: PAG 46

Refrigerant Handling Warning: Use only R-1234yf certified equipment

Service Information Service

Detailed service requirements and schedules for the HVAC system

15,000

Inspect cabin air filter
Check refrigerant level
Inspect blower motor operation

Replace cabin air filter if necessary

50,000

Check compressor oil level
Inspect HVAC system for leaks
Test all HVAC sensors

Perform system pressure test if leaks are suspected

100,000

Replace cabin air filter
Recharge refrigerant if needed
Inspect and clean evaporator and condenser coils

Use only Audi-approved refrigerant and lubricants

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the refrigerant type and capacity for the 2016-Present Audi S4 HVAC system?

The 2016-Present Audi S4 HVAC system uses R-1234yf refrigerant, with a total system capacity of approximately 525 grams (18.5 ounces). This refrigerant is environmentally friendly and complies with current regulations.

How does the dual-zone automatic climate control system work in the Audi S4?

The dual-zone automatic climate control system in the Audi S4 allows the driver and front passenger to set individual temperature preferences. The system uses multiple sensors to monitor cabin temperature, humidity, and sunlight, adjusting airflow and temperature automatically to maintain the desired settings. The temperature range is adjustable from 60°F (16°C) to 84°F (29°C) in 0.5°F increments.

What is the recommended maintenance schedule for the HVAC system in the Audi S4?

Audi recommends inspecting the HVAC system every 20,000 miles or 24 months, whichever comes first. This includes checking refrigerant levels, cabin air filters, and system performance. The cabin air filter should be replaced every 15,000 to 30,000 miles, depending on driving conditions.

Can the Audi S4 HVAC system be retrofitted to use R-134a refrigerant instead of R-1234yf?

No, the Audi S4 HVAC system is specifically designed for R-1234yf refrigerant. Using R-134a can damage the system, void the warranty, and is illegal in many regions due to environmental regulations. Always use the specified refrigerant type.

What are the common symptoms of a failing HVAC compressor in the Audi S4?

Common symptoms of a failing HVAC compressor include reduced cooling performance, unusual noises (such as grinding or squealing), and the A/C clutch not engaging. If these symptoms occur, it is recommended to have the system inspected by a certified Audi technician to avoid further damage.

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 S4 HVAC System Service Manual

Coming Soon

Official service manual for the 2016-Present Audi S4 HVAC system, including detailed repair and maintenance procedures.

Refrigerant Handling and Safety Guidelines

Coming Soon

Comprehensive guide on handling R-1234yf refrigerant safely, including proper disposal and environmental considerations.

Cabin Air Filter Replacement Tutorial

Coming Soon

Step-by-step instructions for replacing the cabin air filter in the 2016-Present Audi S4, including tools required and safety tips.

Audi HVAC System Troubleshooting Guide

Coming Soon

Detailed troubleshooting guide for common HVAC issues in the Audi S4, including diagnostic codes and solutions.

About the Author

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