Refrigerant Circuit With Electrically-Driven A/C Compressor

WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The following illustration shows an example of a refrigerant circuit as it is installed in an Audi Q5 hybrid. For the design of the refrigerant circuit in the respective vehicle, refer to Refrigerant Circuit (vehicle-specific service information).

Arrows point in direction of refrigerant flow.

Fig 1: Identifying A/C Compressor Circuit And Electrical Flow

Courtesy of AUDI OF AMERICA, LLC

Electrically-Driven A/C Compressor
- With A/C Compressor Control Module -J842- and Electrical A/C Compressor -V470-
Condenser
- With receiver/dryer and dryer cartridge
High Pressure Side Service Connection
Hybrid Battery Refrigerant Shut-Off Valve 1 -N516-
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
  NOTE:
  The Hybrid Battery Refrigerant Shut-Off Valve 1 Hybrid Battery Refrigerant Shut-Off Valve 1 -N516- is activated, for example, if it is necessary to cool the battery and no cooling is desired in the passenger compartment (open without activation).
Expansion Valve
- On the evaporator in the A/C unit
Evaporator
- Evaporator in the A/C Unit
Expansion Valve with Hybrid Battery Refrigerant Shut-Off Valve 2 -N517-
- On the evaporator in the battery cooling module
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
  NOTE:
  The Hybrid Battery Refrigerant Shut-Off Valve 2 Hybrid Battery Refrigerant Shut-Off Valve 2 -N517- is activated when it is necessary to cool the battery (closed without activation).
Evaporator
- Evaporator in Battery Cooling Module
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
Low Pressure Side Service Connection