Capacities For AUDI A8 (4H_) From My 2010 And AUDI A8 Hybrid (4H_) From My 2012

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 Audi S7, 2015 Audi RS 7, 2015 Audi A7 Quattro, 2014 Audi S7, and 2014 Audi RS 7. However, it is still accessible from the selected car via links, so may be relevant.

Features of the refrigerant system:

Expansion Valve
Depending on the vehicle equipment level with one or two evaporators
Refrigerant pipe with inner heat exchanger
Dryer cartridge in receiver/dryer on condenser
Mechanically driven "Denso" A/C compressor with A/C Compressor Regulator Valve -N280-. Refer to [For engine(s) CTUA, CEUC, CRDB, CGXB, CPNB] System Overview - Refrigerant Circuit (vehicle-specific repair information) (all vehicles except A8 Hybrid).
For vehicles with a high voltage system (Audi A8 Hybrid) with electrically-driven "Denso" A/C compressors. Refer to [For engine(s) CTUA, CEUC, CRDB, CGXB, CPNB] System Overview - Refrigerant Circuit (vehicle-specific repair information).

CAUTION:

Capacities may vary for the refrigerant and the refrigerant oil on vehicles with an 8-cylinder TDI engine.

Due to the installed location of the A/C compressor (above the engine), the refrigerant oil capacity may vary from what is on the A/C compressor data plate on vehicles with an 8-cylinder TDI engine.

Vehicle model	Production period	Capacity in grams	Differing features of this refrigerant circuit
Audi A8 (all vehicles except for the 8-cylinder TDI engine)	From 03/2010	-	-
Vehicle with one evaporator	-	780 ⁺ / _- 20	One evaporator
Vehicle with two evaporators	-	930 ⁺ / _- 20	Two evaporators
Audi A8 (8-cylinder TDI engine only)	From 03/2010	-	-
Vehicle with one evaporator	-	740 ⁺ / _- 15	One evaporator
Vehicle with two evaporators	-	915 ⁺ / _- 15	Two evaporators
Audi A8 Hybrid	From 01/2012	1080 ⁺ / _- 15	An evaporator in the A/C unit Electrically-driven A/C compressor Evaporator in the battery cooling module

NOTE:

On vehicles with an 8-cylinder TDI engine, the refrigerant oil quantity was increased in the refrigerant circuit from the vehicle identification number 4H_ BN 018846. To compensate, the refrigerant quantity must be slightly reduced. Since the filling capacity information on the information label does not change, proceed as follows: On vehicles that were built up to the specified vehicle identification number, check whether the refrigerant oil capacity was already topped up during a previous workshop visit. If not, fill the refrigerant circuit with an additional 50 ccm of refrigerant oil. Then amend the fill capacity for the refrigerant on the information label with a waterproof marker accordingly and fill the refrigerant circuit with the above specified refrigerant quantity. Finally, document the performed changes in the vehicle data. For vehicles built from the specified vehicle identification number, check the refrigerant capacity specification on the information label and if necessary, amend the quantities with a waterproof marker accordingly and then fill the refrigerant circuit with the above-specified refrigerant quantity.

For all vehicles except for the Audi A8 Hybrid, the mechanically driven A/C compressors manufactured by "Denso" are installed at the start of production. Compressors from other manufacturers may also be installed at a later time. Refer to [For engine(s) CTUA, CEUC, CRDB, CGXB, CPNB] System Overview - Refrigerant Circuit (vehicle-specific repair information).

An electrically driven A/C compressor manufactured by "Denso" (Electrical A/C Compressor -V470- with A/C Compressor Control Module -J842-) is installed at the start of production for the Audi A8 Hybrid. There is no A/C Compressor Regulator Valve -N280- present in this A/C compressor.

A/C compressors with a refrigerant oil quantity of 200 ccm were installed at the start of production on Audi A8 Hybrid vehicles. Shortly after the start of production, the refrigerant oil quantity was reduced to 160 ccm. Always fill this vehicle when servicing to 1080 ± 15 g with refrigerant, regardless of the refrigerant oil quantity (write the capacity information on the information label with a waterproof marker if necessary).