Capacities for Audi A8 (4E_) from 2003

WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Characteristics of refrigerant circuit:

Restrictor

Reservoir

"Denso" compressor with A/C Compressor Regulator Valve N280 → 87 - Air conditioning and → Electronic Parts Catalog ETKA

Vehicle model	Production period	Total quantity of oil in refrigerant circuit in cm 3	Quantity of refrigerant oil in replacement compressor in cm 3	Differing characteristics of this refrigerant circuit
Audi A8 8-cyl. gasoline engine with 3.7 l or 4.2 l (except FSI)	10.02 on All	200 + / - 10	200 + / - 10	Compressor type 7 SEU 16 (refer to notes below)
6 and 12-cyl. gasoline engine 6 and 8-cyl. diesel engine	From 10.02 to 01.04	200 + /-10	200 + /-10	Compressor type 6 SEU 14 , 7 SEU 16 or 7 SEU 17 (refer to notes below)
6, 10 and 12-cyl. gasoline engine 6 and 8-cyl. diesel engine 8-cyl. 4.2 l gasoline engine (FSI only)	01.04 on	150 + / - 10	150 + / - 10	Compressor type 6 SEU 14 or 7 SEU 17 (refer to notes below)

NOTE:

The replacement compressor contains the full quantity of oil intended for the refrigerant circuit. On replacement, the quantity of oil in the compressor is therefore to be adjusted → Refrigerant Circuit Components, Replacing .
The Audi A8 is equipped with different compressors depending on the engine and production period.
As replacement compressors of this type are supplied with different oil capacities, the exact part no. must be noted → 87 - Air conditioning and → Electronic Parts Catalog ETKA.
At the start of production, the compressor types in the first two lines of the table were supplied with a refrigerant oil quantity of 200 cm ³ . These compressors can be recognized from the index of the part number (4E0 260 805 with index "C" , "D" , "E" , "F" , "J" , "L" or "S" ). In Model Year 2004 (as of approx. 01.04), a gradual change was made to other types of compressor with a refrigerant oil quantity of 150 cm ³ . These compressors can be recognized from the index of the part number (4E0 260 805 with index "G" , "H" , "T" , "M" , "N" , "Q" or double index e.g. " AB" ) → Electronic Parts Catalog ETKA.
The reason for the different oil quantities in the compressor for an otherwise identical refrigerant circuit is the design of the actual compressor. Attention is to be paid to these oil quantities. Too much oil in the circuit results in higher pressures and reduced system cooling output; insufficient oil can cause lubrication problems in the compressor.
The compressor may have been installed at the factory with a rating plate indicating the part number and the quantity of refrigerant oil in the compressor.