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 MANUALSAUDI2025A4 QUATTRO PRESTIGEREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAIR CONDITIONING (REFRIGERANT R1234YF SERVICING - A/C SERVICE STATION)87 AIR CONDITIONINGWORKING WITH A/C SERVICE STATIONA/C SYSTEM, OPERATING AFTER CHARGINGNOTES
2025 Audi A4 Quattro Prestige
A/C System, Operating After Charging: Notes
2025 Audi A4 Quattro PrestigeSECTION Notes
If equipped, pay attention to vehicle-specific important notes. Refer to Refrigerant Circuit .
The function for starting the A/C system after charging the refrigerant circuit, must be performed under the following circumstances:
- The A/C compressor was replaced and the refrigerant circuit was flushed.
- Refrigerant circuit was flushed.
- The electrical A/C compressor was replaced.
RENDER: 1.0x
NO RELATED
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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.