Refrigerant R1234YF Pyrotechnical Characteristics

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2022 Audi S5 Sportback, 2022 Audi RS 5 Sportback, 2022 Audi A5 Sportback, 2021 Audi S5 Sportback, and 2021 Audi RS 5 Sportback. However, it is still accessible from the selected car via links, so may be relevant.

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 A/C System, General Information . Distinguishing is only possible by suitable sensors which can analyze the chemical characteristics of the refrigerant. 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).