Lexus IS250 · Service Manual HEATER & AIR CONDITIONING SYSTEM

REMOVAL

Removal / installation


1. REMOVE COOL AIR INTAKE DUCT SEAL

  1. B125512
    Using a clip remover, remove the 11 clips and cool air intake duct seal.


2. REMOVE SIDE ENGINE ROOM COVER LH

  1. A123702E01
    Remove the 5 clips and side cover.


3. REMOVE SIDE ENGINE ROOM COVER RH

  1. A123703E01
    Remove the 2 clips and side cover.


4. REMOVE V-BANK COVER SUB-ASSEMBLY

  1. A127528
    Raise the V-bank cover to disengage the clip on the rear of the cover. Raise the cover again to disengage the 2 clips on the front of the cover and remove the cover.

    NOTICE:
    Attempting to disengage both front and rear clips at the same time may cause the cover to break.


5. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM

  1. Start up the engine.

  1. Turn the A/C switch on.

  1. Operate the cooler compressor at an engine rpm of approximately 1,000 for 5 to 6 minutes to circulate the refrigerant and collect compressor oil remaining in each component into the cooler compressor as much as possible.

  1. Stop the engine.

  1. Using SST, let the refrigerant gas out.

    SST
    07110-58060   (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080)


6. REMOVE NO. 1 INLET AIR CLEANER

  1. A118345
    Remove the bolt, clip and inlet air cleaner.


7. REMOVE UNDER ENGINE COVER

8. REMOVE FRONT BUMPER ASSEMBLY

  1. B125513E01
    Using a screwdriver, turn the pin 90 degrees and remove the 2 pin hold clips.

    HINT:
    1. Tape the screwdriver tip before use.
    2. Use the same procedures for the RH side and LH side.

  1. B125605E01
    Put protective tape around the front bumper assembly.

  1. Using a clip remover, remove the 2 clips

  1. Remove the 2 radiator grille protectors.

  1. Remove the bolt and 10 screws.

  1. B125515
    Disengage the 5 claws and disconnect the front bumper assembly as shown in the illustration.

    HINT:
    Use the same procedures for the RH side and LH side.

  1. Disconnect the headlight washer hose. (w/ headlight cleaner system)

  1. Disconnect the connector and remove the front bumper assembly.


9. REMOVE FRONT BUMPER ENERGY ABSORBER

10. REMOVE RADIATOR SUPPORT OPENING COVER

  1. A126697E01
    Disengage the 2 clips and remove the radiator support opening cover.


11. REMOVE MILLIMETER WAVE RADAR SENSOR ASSEMBLY (w/ Dynamic Radar Cruise Control System)

  1. Disconnect the connector.

  1. E123140
    Remove the 3 bolts and the millimeter wave radar sensor assembly.


12. REMOVE HOOD LOCK CONTROL CABLE COVER

  1. RHD

    1. A121391
      Remove the 3 screws, clamp and the hood lock control cable cover.

  1. LHD

    1. A125111
      Remove the 3 screws, clamp and the hood lock control cable cover.


13. DISCONNECT HOOD LOCK ASSEMBLY

  1. A120536
    Disconnect the connector.

  1. A120537E02
    Remove the hood lock nut cap and the hood lock nut.

  1. Remove the 2 bolts, and separate the hood lock assembly from the radiator support upper.

    NOTICE:
    Do not forcibly bend the hood lock control cable.


14. REMOVE RADIATOR SUPPORT UPPER

  1. A121386E01
    Separate the 4 wire harness clamps and the 3 connectors.

  1. A121388
    Separate the clamp and the cooling fan motor connector.

  1. A121389
    Separate the clamp and the No.2 cooling fan motor connector.

  1. A125135E01
    Separate the 6 clamps and the No.2 engine room wire.

  1. A121390
    Remove the 5 bolts and the upper radiator support.


15. DISCONNECT LIQUID TUBE SUB-ASSEMBLY

  1. E117240
    Remove the 2 bolts and disconnect the liquid tube sub-assembly from the cooler condenser assembly.

  1. Remove the O-ring from the liquid tube sub-assembly.

    NOTICE:
    Seal the openings of the disconnected parts using vinyl tape to prevent moisture and foreign matter from entering.


16. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY

  1. E117238
    Remove the bolt and disconnect the discharge hose sub-assembly from the cooler condenser assembly.

  1. Remove the O-ring from the discharge hose sub-assembly.

    NOTICE:
    Seal the openings of the disconnected parts using vinyl tape to prevent moisture and foreign matter from entering.


17. REMOVE COOLER CONDENSER ASSEMBLY

  1. E117239E01
    Remove the 4 bolts and cooler condenser assembly.


18. REMOVE COOLER DRYER

  1. E101931
    Using a straight hexagon wrench 14 mm, remove the cap from the modulator.

  1. E050386
    Using pliers, remove the cooler dryer.

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