Capacities For AUDI A6 (4F_) From My 2005

WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Also applies to the Audi S 6 and the Audi RS 6.

Features of the refrigerant system:

Red colored restrictor.
Reservoir
"Denso" A/C compressor with A/C Compressor Regulator Valve -N280- (without A/C clutch)

Vehicle type	Production period	Capacity in grams	Differing features of this refrigerant circuit
Audi A6 /S 6	From 04/2004	530 ⁺ / _- 20	Red colored restrictor
Audi RS 6	From 05/2008	500 ⁺ / _- 20	Red colored restrictor Condenser with a smaller internal capacity

NOTE:

Replacement restrictors with different holes are available: Yellow colored 1.54 mm, red colored 1.42 mm.

Depending on manufacturer, color of red restrictor may tend more towards orange.

So as not to change the A/C system cooling output, only red-colored restrictors may be installed.

Different A/C compressors are installed depending on the version. Refer to Component Location Overview - A/C System (vehicle-specific repair information) and to the appropriate Electronic Parts Information.

In contrast to vehicles with other engines, vehicles with the 10-cylinder TFSI engine (Audi RS 6) have a condenser with a smaller interior volume installed. For this reason, the refrigerant fill volume is slightly less in a 10-cylinder TFSI engine than in other engines. Refer to the appropriate Electronic Parts Information.