Audi A4

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Audi S6, 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi S6, and 2017 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Vehicle	Required adapters for the connections to A/C compressor	Adapters necessary for the connections to the reservoir or receiver/dryer	Miscellaneous
Audi A4 (8K_) from MY 2017	-- Compressor manufacturer "Denso" Low pressure side Refrigerant Circuits Adapter Set 1 - Adapter 12:VAS6338/12 connected with the A/C Service Station and the Refrigerant Circuits Adapter Set - Adapter 48:VAS6338/48 High pressure side: Refrigerant Circuits Adapter Set 1 - Adapter 3:VAS6338/3	Receiver/dryer (different versions)-- No adapter needed, the receiver/dryer remains installed-- Depending on the condenser version, remove the dryer cartridge from the receiver/dryer on the condenser before flushing and then seal the opening again (see note).	Expansion valve removed and Refrigerant Circuits Adapter Set 1 - Adapter 36:VAS6338/36 installed (or drilled expansion valve, for example 8K0 820 679 A installed (refer to Cleaning The Refrigerant Circuit, Preliminary Work (Flushing With Refrigerant R1234YF) )).-- The refrigerant line with the inner heat exchanger remains installed or will be installed after installing the adapter.
Audi A4 (8W_) from MY 2017	-- "Denso", "Delphi/Mahle" or "Sanden" compressor manufacturer Low pressure side Refrigerant Circuits Adapter Set 1 - Adapter 12:VAS6338/12 connected with the A/C Service Station and the Refrigerant Circuits Adapter Set - Adapter 48:VAS6338/48 High pressure side: Refrigerant Circuits Adapter Set 1 - Adapter 3:VAS6338/3	-- No adapter required, dryer is removed from receiver/dryer on condenser and the opening is sealed.	The expansion valve is removed and Refrigerant Circuits Adapter Set 1 - Adapter 44:VAS6338/44 is installed (or an old expansion valve is drilled on and installed as an adapter. Refer to Cleaning The Refrigerant Circuit, Preliminary Work (Flushing With Refrigerant R1234YF) ). Refer to the Parts Information.

NOTE:

Depending on the condenser manufacturer, the receiver/dryer version for the Audi A4 (8K_) from MY 2017 varies. Refer to REFRIGERANT CIRCUIT [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB] . The receiver/dryer may be attached to or integrated in the condenser, depending on the version of the condenser. The integrated receiver/dryer has a dryer cartridge that is no longer available as a replacement part. In the event there is a complaint on a vehicle with this condenser, the condenser must be completely replaced. Refer to the Parts Information.

Condensers with an integrated receiver/dryer or dryer cartridge that cannot be replaced separately or is not available as a replacement part, the condenser must be replaced after flushing (with the dryer cartridge installed). Refer to REFRIGERANT CIRCUIT [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB] and the Parts Information.

The Audi A4 (type 86_ for China) from MY 2017 currently only offered with refrigerant R134a. If necessary the in refrigerant circuit refrigerant R1234yf can also be used as described for the Audi A4 (8W_) from MY 2017, which for this vehicle is flushed with the adapter described. Refer to REFRIGERANT CIRCUIT [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB]