Audi Audi A6 2011-2018 HVAC Specifications
Audi Audi A6 2011-2018

Audi Audi A6 2011-2018 HVAC Specifications

Detailed HVAC specifications and service manual for the 2011-2018 Audi A6. Covers heating, ventilation, and air conditioning system components, diagnostics, and repairs.

Updated

HVAC Specifications Overview Specifications

This document provides a detailed overview of the HVAC (Heating, Ventilation, and Air Conditioning) system specifications for the 2011-2018 Audi A6. It includes technical details, system components, and operational parameters. Use this guide to understand the capabilities, maintenance requirements, and performance characteristics of the HVAC system. Navigate through the sections to find specific information, and refer to the quick reference section for key specifications at a glance.

How to Use

To search for specific information, use the search functionality by typing keywords related to the HVAC system, such as 'compressor,' 'heater core,' or 'airflow.' This will help you quickly locate relevant sections and details.

Navigate through the document by exploring the major sections listed in the table of contents. Each section is divided into subsections with detailed technical points. Use the section titles and summaries to find the information you need efficiently.

Key Specifications

Cooling Capacity

Up to 35,000 BTU/h

Heating Capacity

Up to 40,000 BTU/h

Refrigerant Type

R-134a

Airflow Rate

Up to 300 CFM

Cabin Air Filter Type

Activated Carbon

Available Specifications

System Overview

This section provides a general overview of the HVAC system in the 2011-2018 Audi A6, including its primary components, functionality, and integration with other vehicle systems. It serves as a foundation for understanding the more detailed specifications provided in subsequent sections.

System Components
  • Dual-zone automatic climate control standard on all models
  • Multi-zonal air distribution system with adjustable vents
  • Electrically controlled heater core
  • Refrigerant type R-134a
  • Climate control unit with integrated temperature and humidity sensors
  • Condenser and evaporator coils
System Functionality
  • Automatic temperature control with driver and passenger settings
  • Air quality sensor with automatic recirculation mode
  • Heated windshield and rear window functionality
  • Cabin air filter with pollen and dust filtration
  • Integration with vehicle's electronic control unit (ECU)
  • Climate comfort features like seat heating and ventilation

Air Conditioning System

This section details the specifications and operational parameters of the air conditioning system in the 2011-2018 Audi A6, including refrigerant details, compressor performance, and cooling capacity.

Refrigerant and Compressor
  • Refrigerant type: R-134a
  • Compressor type: Electrically controlled variable-displacement compressor
  • Compressor oil type: PAG (Polyalkylene Glycol)
  • Refrigerant charge capacity: approximately 650-750 grams
  • High-pressure cutoff: 290-310 psi
  • Low-pressure cutoff: 60-80 psi
Cooling Performance
  • Cooling capacity: Up to 35,000 BTU/h
  • Airflow rates: Variable, up to 300 CFM
  • Evaporator coil dimensions: 11.8 x 7.9 inches
  • Condenser coil dimensions: 33.5 x 12.6 inches
  • Cooling performance optimized for ambient temperatures up to 122°F
  • Automatic defrost mode with humidity sensor

Heating System

This section provides detailed specifications for the heating system in the 2011-2018 Audi A6, including heater core performance, coolant details, and system controls.

Heater Core and Controls
  • Heater core type: Aluminum crossflow
  • Heater core dimensions: 10.2 x 6.7 inches
  • Heater core flow rate: Up to 4.5 gallons per minute
  • Coolant type: 50/50 mixture of ethylene glycol and water
  • Temperature range: 32°F to 95°F
  • Heater core bypass valve for temperature control
Heating Performance
  • Heating capacity: Up to 40,000 BTU/h
  • Warm-up time: Approximately 2-3 minutes to 70°F
  • Airflow rates: Variable, up to 300 CFM
  • Heated seats standard on most trims
  • Heated steering wheel available on select models
  • Automatic temperature control with adaptive learning

Ventilation and Airflow

This section covers the ventilation and airflow characteristics of the HVAC system in the 2011-2018 Audi A6, including air filter specifications, fan speeds, and ducting details.

Air Filtration and Ducting
  • Cabin air filter type: Activated carbon with allergen capture
  • Filter replacement interval: Every 15,000 to 30,000 miles
  • Ducting material: High-temperature resistant polymer
  • Ducting layout: Dual-zone with independent airflow control
  • Fresh air mode: Draws air from outside the vehicle
  • Recirculation mode: Closes off external air intake
Fan and Airflow Control
  • Fan motor types: Dual-speed, electronically controlled
  • Fan speed settings: 7 speeds, including automatic mode
  • Airflow distribution: Adjustable through dashboard vents
  • Airflow rate: Up to 300 CFM in high-speed mode
  • Noise level: Maximum 45 dBA in low-speed mode
  • Automatic fan shutdown during engine start/stop

Controls and Diagnostics

This section details the control systems and diagnostic features of the HVAC system in the 2011-2018 Audi A6, including information on sensors, electronic controls, and troubleshooting capabilities.

Control Systems
  • Climate control unit with integrated sensors for temperature, humidity, and air quality
  • Automatic temperature control with adaptive learning
  • Manual override for fan speed and airflow direction
  • Integration with vehicle's MMI infotainment system
  • Voice command functionality on equipped models
  • Remote operation through Audi's advanced key
Diagnostics and Troubleshooting
  • Self-diagnostic capability through the MMI system
  • Fault codes stored in the ECU for retrieval with diagnostic tools
  • Live data monitoring for HVAC system performance
  • Automatic system checks during ignition cycle
  • Service interval reminders for filter and coolant maintenance
  • Integration with Audi's service and maintenance system

Component Specifications

Overview

Type
Dual-Zone Climate Control System
Configuration
Automatic with electronic controls
Controls
Touchscreen interface with physical buttons
Air Distribution
Multi-zone with adjustable vents
Refrigerant
R-134a

Dimensions

Hvac Module Length
24.00 in (610 mm)
Hvac Module Width
12.00 in (305 mm)
Hvac Module Height
8.00 in (203 mm)
Evaporator Core Length
18.00 in (457 mm)
Evaporator Core Width
10.00 in (254 mm)
Evaporator Core Height
6.00 in (152 mm)
Condenser Core Length
30.00 in (762 mm)
Condenser Core Width
12.00 in (305 mm)
Condenser Core Height
2.00 in (51 mm)
Compressor Displacement
135 cc (8.25 cu in)

Materials

Evaporator Core
Aluminum tube with aluminum fins
Condenser Core
Aluminum tube with aluminum fins
Hvac Lines
Aluminum with rubber insulation
Hvac Module Casing
High-strength plastic
Compressor Housing
Cast aluminum
Receiver Drier
Metal canister with desiccant
Expansion Valve
Brass construction
Orifice Tube
Brass with plastic insulation
Blower Motor Housing
High-strength plastic

Features

Air Quality Features
  • Air quality sensor
  • Active carbon cabin air filter
  • Automatic recirculation mode
  • Pollutant-sensitive air quality control
  • Dust and pollen filter
Heating Features
  • Heater core with integrated temperature control
  • Electric heating elements
  • Dual-zone temperature control
  • Rear seat heating vents
  • Heated windshield washer nozzles
Cooling Features
  • Mechanical compression clutch
  • Electronic expansion valve
  • Dual-zone cooling control
  • Rear seat cooling vents
  • Cooled glovebox
Fan Features
  • Multi-speed fan control
  • Automatic fan operation
  • Cabin air recirculation
  • Airflow direction control
  • Night mode operation
Automation Features
  • Auto-start function
  • Remote start climate control
  • Climate control memory settings
  • Air quality automatic mode
  • Temperature pre-conditioning
Defrost Features
  • Quick defrost mode
  • Automatic defrost control
  • Windshield defrost vents
  • Rear window defrost
  • Mirror defrost
Ventilation Features
  • Fresh air mode
  • Recirculation mode
  • Ventilation sync control
  • Cabin air pre-filter
  • Negative ion generator

Safety Features

Automatic Shutoff
  • Crash sensor shutoff
  • Overpressure protection
  • Low refrigerant protection
  • High temperature cutoff
  • Electrical overload protection
Pressure Protection
  • High-pressure switch
  • Low-pressure switch
  • Pressure relief valve
  • Expansion valve protection
  • Compressor clutch protection
Leak Detection
  • Refrigerant leak detection
  • UV dye injection points
  • Electronic leak detection system
  • Low refrigerant warning
  • Service port with valve
Thermal Protection
  • Heater core temperature sensor
  • Evaporator freeze protection
  • Condenser overheat protection
  • Blower motor thermal cutoff
  • Compressor thermal protection

Comfort Features

Temperature Control
  • Dual-zone automatic climate control
  • Separate temperature settings for driver and passenger
  • Electronic temperature sensors
  • Heated temperature control elements
  • Cabin temperature display
Air Distribution
  • Multi-directional air vents
  • Dual-zone air distribution
  • Rear seat air vents
  • Heated air distribution
  • Adjustable airflow control
Humidity Control
  • Humidity sensor
  • Automatic humidity control
  • Dehumidification mode
  • Defrost mode with humidity control
  • Cabin air dry mode
Filtration
  • Active carbon air filter
  • Dust and pollen filter
  • Cabin air filter monitoring
  • Filter replacement indicator
  • Dual-filter system
Ventilation
  • Fresh air intake control
  • Recirculation mode
  • Ventilation sync control
  • Cabin air pre-filter
  • Negative ion generator

Accessories

Cabin Air Filter Accessories
  • Replacement filter kit
  • Filter housing seal kit
  • Filter mounting clips
  • Filter monitoring sensor
  • Filter cleaning brush
Ventilation Accessories
  • Air vent cleaning brush
  • Vent trim removal tools
  • Air duct cleaning kit
  • Vent grille replacement
  • Air flow director
Climate Control Accessories
  • Remote start system
  • Climate control module upgrade
  • Temperature sensor kit
  • Heater control valve
  • Climatronic control unit

Maintenance

Service interval
  • Inspect cabin air filter every 15,000 miles
  • Replace cabin air filter every 30,000 miles
  • Check refrigerant level every 12,000 miles
  • Inspect hoses and connections every 15,000 miles
  • Check compressor clutch every 30,000 miles
  • Inspect blower motor every 30,000 miles
Maintenance Notes
  • Use only approved refrigerant R-134a
  • Replace desiccant every 5 years or 60,000 miles
  • Inspect expansion valve every 30,000 miles
  • Check temperature sensor calibration
  • Verify proper system vacuum levels

Warranty

Basic Warranty
Miles: 50,000 miles
Years: 4 years
Coverage: HVAC system components
Powertrain Warranty
Miles: 70,000 miles
Years: 5 years
Coverage: Compressor, condenser, evaporator
Corrosion Warranty
Miles: 100,000 miles
Years: 12 years
Coverage: Corrosion perforation of HVAC components
Emissions Warranty
Miles: 80,000 miles
Years: 7 years
Coverage: Emissions-related HVAC components

Production Details

Manufacturer info
Manufacturer: Audi AG
Supplier: Denso, Valeo, or similar
Production Facility: Germany, Europe
Quality Control: inspection Process: Automated and manual inspection, Testing Procedures: Leak testing,Performance testing,Pressure testing,Temperature testing,Noise testing, Certification: ISO/TS 16949
Manufacturing Process
  • Robotic assembly
  • Welding and brazing
  • Automated testing
  • Manual inspection
  • Final calibration
Sustainability Practices
  • Recyclable materials
  • Energy-efficient production
  • Reduced emissions manufacturing
  • Recycling programs
  • Responsible sourcing
Production Metrics
Production Rate: 500 units per day
Lead Time: 8 weeks
Warranty Rate: Less than 1%
Failure Rate: Less than 0.5%
Quality Rating: Tier 1 supplier

Service Information for HVAC Service

Maintenance and service requirements specific to this component

15,000 miles
12 months
  • Inspect cabin air filter
  • Check refrigerant level
  • Inspect hoses and connections
  • Check compressor clutch operation
  • Verify proper airflow

Replace cabin air filter if dirty or contaminated

30,000 miles
24 months
  • Replace cabin air filter
  • Inspect blower motor operation
  • Check temperature sensor calibration
  • Inspect expansion valve
  • Verify system vacuum levels

Use only approved refrigerant R-134a for any recharge

60,000 miles
48 months
  • Inspect desiccant and replace if necessary
  • Check compressor clutch wear
  • Inspect condenser and evaporator cores
  • Check system for leaks
  • Verify proper system performance

Replace desiccant every 5 years or 60,000 miles

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the HVAC system in a 2011-2018 Audi A6?

The HVAC system in the 2011-2018 Audi A6 features automatic climate control with dual-zone functionality, allowing separate temperature settings for driver and passenger. It includes a refrigerant type R-134a, a condenser, evaporator, and blower motor. Compatibility with factory and aftermarket parts ensures seamless integration. The system supports both manual and automatic modes, with air quality sensors for improved cabin air quality.

Q2

What maintenance is required for the HVAC system?

Regular maintenance includes replacing the cabin air filter every 15,000 miles, checking refrigerant levels annually, and inspecting hoses and belts for wear. Ensuring proper airflow by cleaning vents and checking for blockages is also crucial. Schedule professional servicing every 2 years to maintain optimal performance and prevent issues.

Q3

How do I replace the cabin air filter?

To replace the cabin air filter, open the glove box and release the retaining clips. Remove the filter housing, pull out the old filter, and insert the new one, ensuring proper alignment. Replace the housing and close the glove box. This process typically takes 10-15 minutes and requires no tools.

Q4

Why is my HVAC system not cooling?

Low refrigerant levels, a malfunctioning compressor, or blocked air vents can cause poor cooling. Check for refrigerant leaks, inspect the compressor clutch, and ensure vents are unobstructed. If issues persist, consult a professional for diagnostics and repair.

Q5

How can I optimize my HVAC system's performance?

For optimal performance, ensure the condenser is clean, park in shaded areas, and use the recirculation mode to reduce heat. Regularly clean vents and ensure proper window sealing. Using the AC periodically during winter helps maintain system efficiency and prevents mold growth.

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 A6 HVAC Service Manual

Coming Soon

Detailed guide covering HVAC system maintenance, diagnostics, and repair procedures.

Technical Bulletin: HVAC Control Module Update

Coming Soon

Addresses firmware updates for improved climate control performance and functionality.

Audi A6 Parts Catalog

Coming Soon

Comprehensive list of HVAC-related parts, including filters, sensors, and components.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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