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HOMESERVICE MANUALSAUDI2009A6 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 40 (REFRIGERANT R134A - SERVICING)87 - AIR CONDITIONINGA/C SERVICE STATION, CONNECTING
2009 Audi A6 Base

A/C Service Station, Connecting

2009 Audi A6 BaseSECTION A/C Service Station, Connecting
WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Vehicles with Connection on Low- and High-Pressure Side of Refrigerant Circuit 

  • Switch off ignition.
  • Connect A/C service station to power supply.
  • Connect quick-release coupling adapter to charging hoses of A/C service station (handwheels not screwed in/hand shut-off valve not open).
  • Switch on A/C service station and evacuate charging hoses (only necessary if there is air in hoses).
  • Switch off A/C service station.
  • Unscrew caps from service connections (with valve).
  • Connect A/C service station via service connections with quick-release coupling adapters to vehicle refrigerant circuit.
  • Screw in handwheel of quick-release coupling adapters until valves are definitely open at refrigerant circuit connection (observe pressure gauge, do not strain valves).
  • Perform planned tests and measurements.

Vehicles with no Connection on Low-Pressure Side of Refrigerant Circuit 

On the following vehicles, no service connection is provided for the A/C service station on the low-pressure side of the refrigerant circuit. Adapters are required for connecting the A/C service station to the refrigerant circuit of these vehicles.

  • Audi 80, Audi Cabrio, Audi Coupe
  • Audi A4 up to 07.96
  • Audi 100/ Audi A6 up to 03.97
  • Audi A8 up to 11.97
NOTE:
  • On vehicles with no or inaccessible connection at compressor, remove A/C Refrigerant Low Pressure Switch F73 (jumper contacts in connector for A/C Refrigerant Low Pressure Switch F73 ) and screw adapter to this connection → 87 - Air conditioning .
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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.