Audi Audi TTS 2008-2014

Audi Audi TTS 2008-2014 HVAC Specifications

Detailed technical specifications and diagnostic information for the HVAC system in the 2008-2014 Audi TTS. Learn about climate control functionality, refrigerant type, blower motor specs, and repair procedures.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the HVAC specifications for the 2008-2014 Audi TTS, including key features, measurements, and technical details. This section provides detailed insights into the heating, ventilation, and air conditioning system, ensuring optimal performance and maintenance.

How to Use

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

Navigate through the HVAC documentation sections using the table of contents or by scrolling through the document. Each major section is labeled for easy access.

Key Specifications

Refrigerant Capacity

525 ± 25 g

Heating Output

6.5 kW

Cooling Capacity

4.2 kW

Blower Motor Speed

8-speed

Temperature Range

16°C to 30°C

Available Specifications

HVAC System Overview

This section provides an overview of the HVAC system, including its components, functionality, and key specifications.

System Components

Dual-zone automatic climate control system
Electrically driven compressor
High-capacity blower motor
Pollen filter with activated carbon layer
Automatic air recirculation system

Functionality

Temperature range: 16°C to 30°C (60.8°F to 86°F)
Airflow control via 8-speed blower motor
Automatic defogging and defrosting
Integrated sun sensor for solar compensation
Energy-saving mode for reduced fuel consumption

Note: The system automatically adjusts airflow and temperature based on external conditions and user preferences.

Refrigerant System

This section covers the refrigerant system, including specifications, capacity, and maintenance requirements.

Refrigerant Specifications

Refrigerant type: R134a
Refrigerant capacity: 525 ± 25 g
Operating pressure: 1.5 to 3.0 MPa
Refrigerant oil type: PAG (Polyalkylene Glycol)
Oil capacity: 120 ± 10 ml

Maintenance

Refrigerant recharge interval: Every 2 years or as needed
Leak detection using UV dye
System evacuation to 500 microns before recharge
Use of manifold gauge set for pressure checks
Ensure proper oil level during refrigerant replacement

Note: Always use manufacturer-approved refrigerant and oil to maintain system integrity.

Heating and Cooling Performance

This section details the heating and cooling performance metrics, including temperature ranges and airflow rates.

Heating Performance

Maximum heating output: 6.5 kW
Heater core flow rate: 12 L/min
Cabin temperature rise: 25°C in 10 minutes
Heater control valve: Electrically operated
Coolant temperature sensor range: -40°C to 140°C

Cooling Performance

Maximum cooling capacity: 4.2 kW
Evaporator temperature range: 2°C to 10°C
Condenser airflow: 1200 m³/h
Compressor displacement: 120 cc/rev
Cooling fan speed: 2000 to 4000 rpm

Note: Cooling performance may vary based on ambient temperature and humidity levels.

Control System

This section explains the HVAC control system, including sensors, actuators, and user interface.

Sensors and Actuators

Interior temperature sensor: NTC type, range -40°C to 85°C
Exterior temperature sensor: NTC type, range -40°C to 85°C
Sun sensor: Dual-element photodiode
Actuator motors: Stepper type, 4-wire configuration
Blend door position feedback: Potentiometer-based

User Interface

Dual-zone digital temperature display
8-speed fan control with auto mode
Defrost and recirculation buttons
LCD screen for system status
Voice control integration via MMI system

Note: The system can be controlled via the MMI (Multi Media Interface) for enhanced user experience.

Search Specifications

Search by specification name, value, or description

Component Specifications

General Specifications

System Type: Automatic Climate Control

Refrigerant Type: R134a

Refrigerant Capacity: 525 ± 25 g

Compressor Type: Variable Displacement

Blower Motor Power: 200 W

Airflow Capacity: 450 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: 2-3 minutes

Air Distribution

Vent Modes

Face
Foot
Defrost
Auto

Airflow Direction Adjustment: Manual and Automatic

Recirculation Mode: Automatic and Manual

Air Quality Sensor: Integrated

Compressor Specifications

Part Number: 8J0820803B

Displacement: 120 cc

Maximum Pressure: 30 bar

Oil Type: PAG 46

Oil Capacity: 150 ± 10 ml

Condenser Specifications

Part Number: 8J0820451A

Material: Aluminum

Dimensions: 600 mm x 300 mm x 20 mm

Pressure Rating: 35 bar

Evaporator Specifications

Part Number: 8J0820043C

Material: Aluminum

Dimensions: 250 mm x 200 mm x 50 mm

Pressure Rating: 25 bar

Blower Motor Specifications

Part Number: 8J0820055D

Voltage: 12 V

Current Draw: 16.7 A

Speed Control: PWM (Pulse Width Modulation)

Heater Core Specifications

Part Number: 8J0820031E

Material: Aluminum

Dimensions: 300 mm x 150 mm x 40 mm

Heat Output: 5 kW

Diagnostic Specifications

Diagnostic interface: OBD-II

Fault Codes

B10A1
B10A2
B10A3

Self Diagnosis: Yes

Error Tolerance: ±2%

Maintenance Specifications

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

Refrigerant Recharge interval: 24 months or as needed

Compressor Belt Tension: 500 ± 50 N

System Leak Test Pressure: 10 bar

Service Information Service

Detailed service requirements and schedules for the HVAC system

15,000

Replace cabin air filter
Inspect refrigerant levels
Check compressor belt tension

Ensure all connections are secure and free of leaks

30,000

Recharge refrigerant if necessary
Inspect condenser and evaporator for debris
Test blower motor operation

Use only Audi-approved refrigerant and lubricants

60,000

Replace compressor oil
Inspect heater core for leaks
Perform full system diagnostic

Ensure all diagnostic codes are cleared after service

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the refrigerant type and capacity for the 2008-2014 Audi TTS HVAC system?

The HVAC system in the 2008-2014 Audi TTS uses R134a refrigerant. The total system capacity is approximately 525 grams (18.5 ounces). Always refer to the vehicle's service manual for precise specifications.

How do I reset the HVAC system after replacing the cabin air filter?

To reset the HVAC system, turn the ignition on without starting the engine. Press and hold the 'ECON' and 'AUTO' buttons simultaneously for 5 seconds until the display confirms the reset. This ensures proper airflow and system calibration.

What is the recommended interval for servicing the HVAC system?

Audi recommends inspecting the HVAC system every 20,000 miles or 2 years, whichever comes first. This includes checking refrigerant levels, cleaning the evaporator, and inspecting the compressor and condenser for leaks or damage.

How do I diagnose a weak airflow from the HVAC system?

Weak airflow may result from a clogged cabin air filter, a malfunctioning blower motor, or blocked air ducts. Inspect and replace the cabin air filter every 15,000 miles. If the issue persists, check the blower motor resistor and ensure the ducts are free of debris.

What are the common symptoms of a failing HVAC compressor?

Common symptoms include unusual noises (e.g., grinding or squealing), reduced cooling performance, and visible refrigerant leaks. If the compressor clutch fails to engage, it may indicate electrical or mechanical issues requiring professional 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 TTS HVAC System Service Manual

Coming Soon

Official service manual detailing HVAC system components, maintenance procedures, and troubleshooting steps.

Refrigerant Handling and Safety Guidelines

Coming Soon

Comprehensive guide on handling R134a refrigerant, including safety precautions and proper disposal methods.

Cabin Air Filter Replacement Tutorial

Coming Soon

Step-by-step video tutorial for replacing the cabin air filter in the 2008-2014 Audi TTS.

HVAC System Diagnostic Tools

Coming Soon

Overview of diagnostic tools and software for identifying HVAC system issues in Audi vehicles.

About the Author

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