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 MANUALSAUDI2018A5 QUATTRO PRESTIGE, 2D CONVERTIBLEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 92 (GENERAL, TECHNICAL DATA (REFRIGERANT R1234YF SERVICING))00 GENERAL, TECHNICAL DATATECHNICAL AND PHYSICAL PRINCIPLESADDITIONAL INFORMATION SOURCES
2018 Audi A5 Quattro Prestige, 2D Convertible
Additional Information Sources
2018 Audi A5 Quattro Prestige, 2D ConvertibleSECTION Additional Information Sources
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2020 Audi S3, 2020 Audi RS 3, 2020 Audi A3 Quattro, 2020 Audi A3, and 2019 Audi S3. However, it is still accessible from the selected car via links, so may be relevant.
- repair information for model-specific maintenance. Refer to Component Location Overview - A/C System (vehicle-specific repair information) and the appropriate Wiring Diagram.
- Technical Service Handbook (HST) outlining action to be taken to rectify current problems
- Self-study program, video programs for in-dealership training and VW/Audi TV programs about the A/C system
- The specific dangers associated with the refrigerant, material data etc. can be found in the safety data sheets.
- Special tools and workshop equipment needed to service the A/C system. Refer to the Parts Information (Tools; Special Tools and Equipment: A/C and Heating).
- For vehicles who refrigerant circuit is filled with refrigerant R134a (vehicles with a type approval which was released before 12/31/2010 and until 12/31/2016 for those which were/are place on the market for the first time. Refer to LAWS AND REGULATIONS .
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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.