Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2005A6 3.2 TREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)GENERAL SERVICINGREFRIGERANT R134A SERVICING (1 OF 2)
2005 Audi A6 3.2 T
Refrigerant R134A Servicing (1 Of 2)
2005 Audi A6 3.2 TSECTION Refrigerant R134A Servicing (1 Of 2)
- 87 Air Conditioning
- Warnings When Working On Vehicles With High Voltage System
- A/C System, General Information
- Introduction
- Safety Precautions For Vehicles With Start/Stop System
- Additional Information Sources
- A/C Technology Basic Principles
- Refrigerant R134A
- Refrigerant R134A Characteristics
- Refrigerant Oil
- A/C System Operation
- General Safety Precautions
- Product Characteristics
- Handling Refrigerant
- Handling Pressure Containers
- Extraction And Charging System Safety Regulations
- A/C System And Refrigerant R134A Safety Precautions
- Refrigerant Circuit, General Precautions
- After Charging A/C System
- Refrigerant Circuit General Information
- Vehicles With A High Voltage System (Hybrid Vehicles)
- Refrigerant Circuit Components
- Refrigerant Circuit Components Allocation, High And Low Pressure Sides
- General Information
- Mechanically Driven A/C Compressor:
- Electrically Driven A/C Compressor For Vehicles With High Voltage System
- Condenser
- Evaporator
- Reservoir
- RESTRICTOR
- Receiver/Dryer
- Expansion Valve
- EXPANSION VALVE WITH Hybrid Battery Refrigerant Shut-Off Valve 2 -N517-
- Refrigerant Cut-Off Valve
- Refrigerant Line With Inner Heat EXCHANGER
- Quick-Release Connections On Refrigerant Lines
- O-Ring Seals
- Refrigerant Circuit Pipes And Hoses
- Pressure Relief Valve
- Refrigerant Circuit
- Refrigerant Circuit With An Electrically Driven A/C Compressor (With And Without Battery Cooling Module)
- Connections For Quick-Release Coupling On Refrigerant Circuit
- Switches And Sensors On Refrigerant Circuit And Connections
- A/C Refrigerant High Pressure Switch -F23-
- Magnetic Clutch High Pressure Switch -F118-
- A/C Refrigerant Low Pressure Switch -F73-
- Refrigerant Circuit Connections With Valve For Switches
- A/C Pressure Switch -F129-
- High Pressure Sensor -G65-, Refrigerant Circuit Pressure Sensor -G805-
- A/C Pressure/Temperature Sensor -G395-
- A/C Compressor Regulator Valve -N280-
- A/C Compressor -G111-
- Refrigerant Temperature Sensor -G454-
- Electrical Components Not On Refrigerant Circuit
- Refrigerant Circuit Pressures And Temperatures
- Pressure Gauge, Tests And Measurements
- Service And Recycling Units
- Refrigerant Circuit Repair Information
- Laws And Regulations
- Refrigerant Circuit
- A/C System Repair Information
- Refrigerant Circuit, Converting R12 To R134A
- Using Service Station
- General Information
- Service Station, Important Usage Information
- Servicing Station, Connecting For Measuring And Testing
- Refrigerant Circuit, Discharging With Service Station
- Refrigerant Circuit, Charging With Service Station
- A/C System, Operating After Charging
- Refrigerant To Service Station Reservoir (Charging Cylinder Or Reservoir Bottle), Transferring
- Service Station, Draining
- Refrigerant Circuit, Flushing With Compressed Air And Nitrogen
- Refrigerant Circuit, Cleaning (Flushing), With Refrigerant R134A
- Refrigerant Circuit, Determining Leaks
- Refrigerant Circuit Complaints
- A/C Service Station, Connecting
- Pressures, Checking
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.