Audi AZ 2022 Owner's Manual page 97

Warm and cold
refrigerant oil quantity, refer to the Technical Da-
ta > page 339.
To ensure secure and safe operation, the A/C
system must only be serviced by qualified
technicians and certified technicians (SAE
standard J2845).
— Never repair the A/C system evaporator with
components from old vehicles or from recy-
cling.
— New replacement evaporators for portable
A/C systems must be certified and labeled
as such, so that they comply with the SAE
standard J2842 HFO-1234yf and R744.
95