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Home >> Audi >> 2012 >> TT Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> Engine Performance >> Ignition System >> General, Technical Data - Refrigerant R134A Servicing (Roadster) (2 Of 2) >> 00 General, Technical Data >> Specifications >> Refrigerant R134A Capacities >> Capacities, AUDI A8 (4H_) From My 10, AUDI A8 Hybrid (4H_) From 2012

Capacities, AUDI A8 (4H_) From My 10, AUDI A8 Hybrid (4H_) From 2012

Features of the refrigerant system:

Vehicle model Production period Capacity in grams Differing features of this refrigerant circuit
Audi A8 As of 03.10    
  • Vehicle with one evaporator
  780 + / - 20
  • one evaporator
  • Vehicle with two evaporators
  930 + / - 20
  • two evaporators
Audi A8 Hybrid From January 2012 1080 + / - 15
  • An evaporator in the A/C unit
  • A/C compressor driven by electricity
  • 2. Evaporator in the battery cooling module
NOTE:

For vehicles with 8 cylinders. The refrigerant oil quantity must be increased in the refrigerant circuit for TDI engines for vehicles with VIN numbers from 4H_ BN 018846. To differentiate, the refrigerant quantity must be slightly reduced. Since the filling capacity information on the information label does not change, proceed as follows: For vehicles built through the designated VIN, check whether the refrigerant oil capacity was possibly filled during a previous workshop visit, if not, fill the refrigerant circuit with an additional 50 cubic cm of refrigerant oil. Next, write down the corresponding filling capacity for the refrigerant in the information label with a waterproof marker and fill the refrigerant circuit with the above mentioned refrigerant quantity. Finally, document the performed changes in the vehicle data. For vehicles constructed within the applicable VIN range, check the specified filling capacity for the refrigerant in the information label and if necessary write down the corresponding quantities with a waterproof marker and then fill the refrigerant circuit with the specified refrigerant quantity

For all vehicles except for the Audi A8 Hybrid, the mechanically driven A/C compressors manufactured by "Denso" are installed. Compressors from other manufacturers may also be installed at a later time. Refer to [For engine(s) BPY, CETA, CCTA, CDMA, CEPB] Removal and Installation (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 cubic cm are installed at the start of production for Audi A8 Hybrid vehicles, shortly after the start of production, the refrigerant oil quantity is reduced to 160 cubic cm. Always fill the vehicles when servicing to 1080 +/- 15 g with refrigerant (write the capacity information on the information label with a waterproof marker if necessary) regardless of the refrigerant oil quantity.