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 MANUALSAUDI2024Q4 E-TRON PREMIUM, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAIR CONDITIONING (REFRIGERANT R1234YF SERVICING REFRIGERANT CIRCUIT)87 AIR CONDITIONINGREFRIGERANT CIRCUITGENERAL DESCRIPTION - REFRIGERANT CIRCUIT COMPONENTSREFRIGERANT CIRCUIT PIPES AND HOSES
2024 Audi Q4 e-tron Premium, AWD
Refrigerant Circuit Pipes And Hoses
2024 Audi Q4 e-tron Premium, AWDSECTION Refrigerant Circuit Pipes And Hoses
- In the right state refrigerant R1234yf is chemically stable and does not damage iron, aluminum and corresponding developed and suitable plastic. Mixing refrigerant oil and refrigerant R1234yf can damage specific metals (for example alloys with copper) and can damage and dissolve specific hose materials and plastics. For this reason use only original parts. Refer to the Parts Information.
- Make exclusive use of components which are resistant to refrigerant R1234yf and the related refrigerant oils. Do not use any components (such as seals and hoses that are made of plastic) which were not clearly assigned. Refer to the Parts Information.
- The pipes and hoses are held together by threaded connections and/or special connections. Refer to Refrigerant Circuit (vehicle-specific service information).
- Replace the sealing elements (seals, for example) between the components. Refer to Parts Information.
- Note the tightening specification on threaded connections, for connectors use the corresponding release tools. Refer to Refrigerant Circuit (vehicle-specific service informations).
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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.