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Air Conditioning Unit: Removal

WARNING: This page is about a different car, the 2005 Lexus GS 430 and 2005 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM 

    HINT:

    At the time of installation, please refer to the following item.

    Evacuate air from refrigeration system.

    Charge system with refrigerant and inspect for leakage of refrigerant.

    Specified amount: 600 +/- 50 g (21.16 +/-.76 oz.) 

  2. DRAIN ENGINE COOLANT FROM RADIATOR 

    HINT:

    It is not necessary to drain out all coolant.

  3. DISCONNECT LIQUID TUBE AND SUCTION HOSE FROM A/C UNIT 

    Remove the bolt and slide the plate, then disconnect the both tubes.

    Torque: 10 N.m (100 kgf.cm, 7 ft.lbf) 

    NOTE: Cap the open fittings immediately to keep moisture or dirt out of the system.
    Fig 1: Disconnecting Liquid Tube And Suction Hose From A/C Unit
    G02943119Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    At the time of installation, please refer to the following item.

    Lubricate 2 new O-rings with compressor oil and install them to the tubes.

  4. DISCONNECT WATER HOSES FROM HEATER RADIATOR PIPES 
    1. Grip the claws of the hose clip and slide the hose clip along the hose.
    2. Disconnect the water hose.
      Fig 2: Disconnecting Water Hose From Heater Radiator Pipe
      G02943120Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE THESE PARTS: 
    1. Cooler No.1 grommet
    2. Heater pipe grommet
    3. Drain hose grommet
    4. Instrument panel and reinforcement

      (See REMOVAL )

    5. Blower unit

      (See REMOVAL  )

  6. REMOVE 3 AIR DUCTS 
    1. Remove the 2 screws and center air duct.
    2. Slide the floor carpet backward.
    3. Disconnect the wire harness clamps.
    4. Remove the 2 bolts and air ducts LH, RH.
      Fig 3: Removing 2 Screws And Center Air Duct
      G02943121Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE A/C UNIT 
    1. Disconnect the connector.
    2. Remove the wire harness set nut.
    3. Disconnect the wire harness clamps.
    4. Remove the 2 nuts, bolt and A/C unit.
      Fig 4: Disconnecting Wire Harness Clamps
      G02943122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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