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.
Refrigerant lines on compressor, removing and installing: Notes
2009 Audi A6 BaseSECTION Notes
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.
NOTE:
- The compressor is always driven when the engine is running; there is no A/C clutch. The engine is therefore not to be started unless the refrigerant circuit has been properly assembled. If, for example, the refrigerant lines have not been connected to the compressor, heat generation inside the compressor with the engine running may lead to destruction of the compressor.
- The following illustrations show a compressor installed to the right of the engine. The refrigerant lines are to be removed in the same manner for compressors installed to the left of the engine. These engines are however not installed at present with a bracket for the refrigerant lines.
- Seal open lines and connections at compressor with suitable caps (to prevent dirt and moisture).
- On vehicles with 8-cyl. engine, certain preparatory work is required to make the refrigerant lines accessible for removing → Compressor, removing and mounting (vehicles with 4 or 6-cyl. engine) .
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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.