Overview - Refrigerant Lines

On vehicles with a high voltage system (hybrid vehicles)

Fig 1: Refrigerant Lines To Battery Cooling Module

Courtesy of AUDI OF AMERICA, LLC

1. High Pressure Side Refrigerant Line
   • Inside the engine compartment
2. O-Ring Seal
3. Low Pressure Side Refrigerant Line
   • In the front on the floor panel
   • Removing and installing. Refer to REFRIGERANT LINES TO FRONT BATTERY COOLING MODULE, REMOVING AND INSTALLING, ON VEHICLE FLOOR .
4. Bolt
   • Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
5. O-Ring Seal
6. High Pressure Side Refrigerant Line
   • In the front on the floor panel
   • Removing and installing. Refer to REFRIGERANT LINES TO FRONT BATTERY COOLING MODULE, REMOVING AND INSTALLING, ON VEHICLE FLOOR .
7. Bolt
   • Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
8. High Pressure Side Refrigerant Line
   • In the rear on the floor panel
   • Removing and installing. Refer to REFRIGERANT LINES TO REAR BATTERY COOLING MODULE, REMOVING AND INSTALLING, ON VEHICLE FLOOR .
9. O-Ring Seals
10. Low Pressure Side Refrigerant Line
    • In the rear on the floor panel
    • Removing and installing. Refer to REFRIGERANT LINES TO REAR BATTERY COOLING MODULE, REMOVING AND INSTALLING, ON VEHICLE FLOOR .
11. Bolt
    • Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
12. Bolts
    • Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
13. O-Ring Seals
14. Pass-Through for the Refrigerant Lines in the Luggage Compartment
    • Removing and installing. Refer to REFRIGERANT LINE PASS-THROUGH IN LUGGAGE COMPARTMENT, REMOVING AND INSTALLING .
15. O-Ring Seals
16. Bolts
    • Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
17. Nut
    • Tightening specification 9 Nm.
18. High Pressure Refrigerant Line
    • To the battery cooling module inside the luggage compartment
    • Removing and Installing. Refer to REFRIGERANT LINES FOR BATTERY COOLING MODULE IN LUGGAGE COMPARTMENT, REMOVING AND INSTALLING .
19. Low Pressure Side Refrigerant Line
    • To the battery cooling module inside the luggage compartment
    • Removing and installing. Refer to REFRIGERANT LINES FOR BATTERY COOLING MODULE IN LUGGAGE COMPARTMENT, REMOVING AND INSTALLING .
20. Bolt
    • Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
21. O-Ring Seals
22. Bolt
    • Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
23. Sheet Metal Nut
    • Tightening specification: 2.5 Nm
24. Bolt
    • Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
25. Hybrid Battery Refrigerant Shut-Off Valve 1 -N516-
    • Removing and installing. Refer to Hybrid Battery Refrigerant Shut-Off Valve 1 -N516-, REMOVING AND INSTALLING .
      NOTE:

      The Hybrid Battery Refrigerant Shut-Off Valve 1 -V516- is installed in the high pressure side refrigerant line. Refer to -item  1- (See Fig 1), and refer to Hybrid Battery Refrigerant Shut-Off Valve 1 -N516-, REMOVING AND INSTALLING (it does not have a number in this illustration).