Capacities, AUDI R8 (42_) From My 2008, AUDI R8 (4S_) From My 2015

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.

Characteristics of the Audi R8 (42_) refrigerant circuit from MY 2008:

Red colored restrictor.
Reservoir
Two condensers switched in sequence
"Denso" A/C compressor with A/C Compressor Regulator Valve -N280-. Refer to REFRIGERANT CIRCUIT [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB]

Characteristics of the Audi R8 (4S_) refrigerant circuit from MY 2015:

Expansion Valve
Receiver/Dryer (with Dryer)
Two condensers switched in sequence
"Denso" A/C compressor with A/C Compressor Regulator Valve -N280-. Refer to REFRIGERANT CIRCUIT [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB]

Vehicle model	Production period	Capacity in grams	Differing features of this refrigerant circuit
Audi R8 (42_)	From 03/2007 to 11/2012	680 ⁺ / _- 20 Originally these vehicles were filled with 650 g of refrigerant, then the capacity was raised to 680 g (see notes).	Red colored restrictor
	From 11/2012	680 ⁺ / _- 20
Audi R8 (4S_)	From 08/2015	820 ⁺ / _- 15	Expansion Valve Receiver/dryer (with dryer) as extra component

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.

From the VIN 429 DN 000751 (time period of production from 11/2013) the refrigerant quantity for the refrigerant circuit was raised from 650 g to 680 g and the refrigerant oil quantity was raised from 150 ccm to 200 ccm. The increased refrigerant and refrigerant oil capacity applies retroactively to all vehicles. 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. Finally, check the refrigerant capacity information on the information label and if necessary, attach a new information label with the correct capacity and language (for example, the identification label with the part number 420 010 535 and the index BA with the labeling in German and English). Refer to the parts information and COMPONENT LOCATION OVERVIEW - A/C SYSTEM [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB] If there is no information label available with the correct capacity and language, amend the capacity information on the existing information label accordingly using a waterproof marker. Finally, increase the refrigerant oil quantity in the refrigerant circuit by 50 ccm if necessary and fill the refrigerant circuit with the above-specified refrigerant amount. Refer to CAPACITIES FOR AUDI R8 (42_) FROM MY 2008 .