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 Circuit Components Overview
Special tools and workshop equipment required
- Torque Wrench V.A.G 1331/ (5 to 50 Nm)
- Drip Tray For Shop Crane VAS 6208
- Hose Clamps Up To Diameter 40 mm3093
- Robinair A/C Service Unit ROB 134APF with Rinsing Device For Refrigerant Circuits VAS6337/1A
Refrigerant must be extracted before hand using Robinair A/C Service Unit ROB 134APF.
The previously used service stations can still be used. Refer to V.A.G workshop equipment.
To prevent the entry of dampness all components of the refrigerant circuit which have been opened must be sealed with suitable plugs.
The color coding of refrigerant circuit O-rings with R134a has been discontinued. Colored and black O-rings are used.
Under certain conditions, fluid reservoir with dryer is no longer to be replaced after each time the refrigerant circuit is opened. Refer to Removal and Installation .
Information for repairing vehicles with air conditioning and working with refrigerant can be found in General Information .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.