Removing Auxiliary Air-Conditioning Unit

Information 

• For vehicles with four-zone air conditioning (2+2), the auxiliary air-conditioning unit is located behind the left rear side section cover for the auxiliary air-conditioning unit. 
  Fig 1: Overview Of Auxiliary Air-Conditioning Unit

  Courtesy of PORSCHE CARS NORTH AMERICA, INC.

→ Avoid contact with refrigerant.

→ Wear personal protective gear.

→ Observe the safety regulations for working on air-conditioned vehicles and dealing with refrigerant.

→ Observe the safety regulations for extraction and filling systems.

→ Observe the instructions for repairing air conditioning systems and storing spare parts.

1. Remove refrigerant by suction. → Draining and filling in refrigerant
2. Press together the air duct from above and pull out of the air-conditioning unit.
   Fig 2: Pulling Out Air Duct From Air-Conditioning Unit

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3. Press the release on the electrical plug -A-  (-arrow a-  ) and pull off plug -A-  and -B-  .
   Fig 3: Disconnecting Plug Connections

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4. Unscrew the fastening screws -1-  and tilt the auxiliary air-conditioning unit inwards on the top side.
   Fig 4: Removing Auxiliary Air-Conditioning Unit Fastening Screws

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
5. Press together the spring band clamps for the coolant hoses on the heat exchanger with the assembly pliers for spring band clamps, Cayenne hose connections 72-1  (-arrows A-  ) and pull off the coolant hoses from the heat exchanger -arrows B-  .
   Fig 5: Releasing Coolant Hoses

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6. Unscrew the fastening screw for the intake pipe in the upper bracket (not on the expansion valve at the bottom) -1-  .
   Fig 6: Loosening Suction Line

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7. Remove the suction line and close with plugs.
8. Unscrew the fastening screw for the pressure line in the upper bracket (not on the expansion valve at the bottom) -1-  .
   Fig 7: Unscrewing Fastening Screw Pressure Lines

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9. Remove the pressure line and seal with plugs.
10. Raise auxiliary air-conditioning unit and pull off water drain.
    Fig 8: Raising Auxiliary Air-Conditioning Unit

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11. First pull auxiliary air-conditioning unit inward -arrow-  and pull out with the coolant hoses and the air-conditioning lines.
    Fig 9: Removing Auxiliary Air-Conditioning Unit

    Courtesy of PORSCHE CARS NORTH AMERICA, INC.