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 MANUALSVOLKSWAGEN2022GOLF R ENG CD DSFFREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSGENERAL, TECHNICAL DATA (REFRIGERANT R1234YF SERVICING)00 GENERAL, TECHNICAL DATATECHNICAL AND PHYSICAL PRINCIPLESPHYSICAL CHARACTERISTICSREFRIGERANT R1234YF, PHYSICAL CHARACTERISTICS
2022 Volkswagen Golf R Eng CD DSFF
Refrigerant R1234YF, Physical Characteristics
2022 Volkswagen Golf R Eng CD DSFFSECTION Refrigerant R1234YF, Physical Characteristics
- The vapor pressure curves of both refrigerant R1234yf and R134a are very similar across a large temperature range for this reason no differentiation of the two refrigerants is possible. Refer to REFRIGERANT VAPOR PRESSURE TABLE and the Refrigerant R134a Servicing, A/C System General Information. Differentiating is only possible using sensors that can analyze the chemical composition of the refrigerants. Refer to REFRIGERANT R1234YF ANALYSIS .
- With R1234yf, the A/C compressor is lubricated with special synthetic refrigerant oils, for example PAG oils (polyalkylene glycol oils) which are specified to the refrigerant R1234yf, the A/C compressor and the operating conditions of the specified additions (additives).
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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.