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Home >> Subaru >> 2017 >> Legacy 2.5i Limited >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System (Heater, Ventilator And A/C) (Service Information) >> Heater and Cooling Unit >> Removal

Heater and Cooling Unit: Removal

CAUTION: Before handling the airbag system components, refer to "CAUTION" of "General Description" in "AIRBAG SYSTEM". Ref. to CAUTION , General Description.
  1. Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. Ref. to BATTERY
    NOTE: Repair Contents.
  2. Using the refrigerant recovery system, discharge refrigerant. Ref. to PROCEDURE , Refrigerant Recovery Procedure.
  3. Drain the coolant from the radiator.
  4. With the PCV hose connected, remove the air intake boot from the air cleaner case (rear) and throttle body, and move the air intake boot.
    • H4 model: Ref. to REMOVAL , Air Intake Boot.
    • H6 model: Ref. to REMOVAL , Air Intake Boot.
  5. Disconnect the hose - pressure suction.
    CAUTION: Seal the disconnected hose, pipe and engaging part of expansion valve with a plug or vinyl tape to prevent foreign matter from entering.
    1. Disconnect the quick connector.

      Preparation tool: 

      ST: SP TL REMOVER PD (73499XA00A) 

      1. Face collar side (A) of the quick connector (1) to the remover (2), and set lock part (B) on the stopper side (C) of the remover.
        Fig 1: Installing Face Collar Side Of Quick Connector To Remover
        G05346835Courtesy of SUBARU OF AMERICA, INC.
      2. Insert the remover.
        Fig 2: Inserting Remover
        G05346836Courtesy of SUBARU OF AMERICA, INC.

        Do not bend the needle (4) in the remover.

        Fig 3: Identifying Needle
        G05346837Courtesy of SUBARU OF AMERICA, INC.
      3. With the pipe secured, press the label part (D) of the remover with a thumb. Connector is unlocked and the quick connector opens.
        Fig 4: Pressing Label Part Of Remover
        G05346838Courtesy of SUBARU OF AMERICA, INC.
        Fig 5: Unlocking Quick Connector
        G05346839Courtesy of SUBARU OF AMERICA, INC.
      4. Pull the remover (2) and separate the pipe (3) from the quick connector (1).
        Fig 6: Separating Pipe From Quick Connector
        G05346840Courtesy of SUBARU OF AMERICA, INC.
      5. Pull up the stopper (C) and remove the remover (2) and quick connector (1) from the pipe.
        Fig 7: Removing Remover And Quick Connector From Pipe
        G05346841Courtesy of SUBARU OF AMERICA, INC.
      6. Disconnect the quick connector (1) from the remover (2).
      Fig 8: Disconnecting Quick Connector From Remover
      G05346842Courtesy of SUBARU OF AMERICA, INC.
    2. Disconnect the connector.
    3. Remove the bolts and detach the hose - pressure suction.
    Fig 9: Identifying Pressure Suction Hose Bolts
    G11580954Courtesy of SUBARU OF AMERICA, INC.
  6. Loosen the heater hose clamps and detach the hoses.
    Fig 10: Identifying Heater Hose Clamps
    G11580955Courtesy of SUBARU OF AMERICA, INC.
    NOTE: Put alignment marks to hoses, clamps, etc.
  7. Remove the instrument panel assembly and the beam COMPL - steering. Ref. to REMOVAL , Instrument Panel Assembly.
  8. Remove the heater and cooling unit assembly.
    1. Remove the clips, and remove the duct - console front.
    2. Remove the hose - heater drain.
    3. Turn over the floor carpet and remove the slide lock of the duct - rear heater.
    4. Remove the bolt and remove the heater and cooling unit assembly.
    Fig 11: Identifying Heater And Cooling Unit Assembly Bolts
    G10276814Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the blower motor unit assembly. Ref. to REMOVAL , Blower Motor Unit Assembly.
    CAUTION:
    • Do not detach the immobilizer control module except when replacing the blower motor unit assembly.
    • Replace the air duct cover LWR with a new part when the immobilizer control module is removed. If the air duct cover LWR is reused, screw tightening force is reduced and the immobilizer control module may be detached due to vibration while driving.