Overview - Refrigerant Lines

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On vehicles with a high voltage system (hybrid vehicles)

Fig 1: Refrigerant Lines To Battery Cooling Module

Courtesy of AUDI OF AMERICA, LLC

High Pressure Side Refrigerant Line
- Inside the engine compartment
O-Ring Seal
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 .
Bolt
- Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
O-Ring Seal
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 .
Bolt
- Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
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 .
O-Ring Seals
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 .
Bolt
- Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
Bolts
- Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
O-Ring Seals
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 .
O-Ring Seals
Bolts
- Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
Nut
- Tightening specification 9 Nm.
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 .
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 .
Bolt
- Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
O-Ring Seals
Bolt
- Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
Sheet Metal Nut
- Tightening specification: 2.5 Nm
Bolt
- Tightening specification: 9 Nm (bolts with a M6 thread) and 25 Nm (bolts with a M8 thread).
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).