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HOMESERVICE MANUALSAUDI2018A5 QUATTRO PRESTIGE, 2D CONVERTIBLEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 212 (GENERAL, TECHNICAL DATA (HVAC))00 GENERAL, TECHNICAL DATAREPAIR INFORMATIONGENERAL REPAIR INFORMATION
2018 Audi A5 Quattro Prestige, 2D Convertible

General Repair Information

2018 Audi A5 Quattro Prestige, 2D ConvertibleSECTION General Repair Information
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No components of the heating and A/C system can be serviced. Replace faulty components using original parts.

-- On vehicles with high-voltage system, switch on the "parking air conditioner" function (deactivate). Refer to the Owner's Manual.

The refrigerant circuit for the A/C system may only be discharged and opened when

  • it is necessary due to safety precautions. Refer to SAFETY PRECAUTIONS WHEN HANDLING REFRIGERANT .
  • it is necessary to remove other components,
  • refrigerant circuit components for the A/C system must be removed or replaced.

When performing all other usual vehicle repair work, the refrigerant circuit of the A/C system remains closed.

If it is necessary to discharge and open the A/C system refrigerant circuit for certain repair work on the heating and A/C system, this is described in the respective work procedure. Certain tools are required to discharge the refrigerant circuit. These work procedures may also only be performed by trained personnel. Refer to Refrigerant Circuit (R134a) (Refrigerant R134a Servicing, Refrigerant Circuit, Working with A/C Service Station) and Working with A/C Service Station (R1234yf) (1 of 2) or Working with A/C Service Station (R1234yf) (2 of 2) .

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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.