Lexus IS250 · Service Manual ENGINE

REMOVAL

Removal / installation


1. REMOVE COOL AIR INTAKE DUCT SEAL

  1. A127530
    Remove the 11 clips and intake duct seal.


2. REMOVE ENGINE ROOM SIDE COVER LH

  1. A123702E01
    Remove the 5 clips and side cover.


3. REMOVE ENGINE ROOM SIDE 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. REMOVE NO. 1 INLET AIR CLEANER

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


6. DISCONNECT NO. 2 VENTILATION HOSE

  1. A103947
    Disconnect the ventilation hose from the cylinder head.


7. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE

  1. A124986
    Disconnect the MAF meter connector.

  1. Disconnect the clamp from the air cleaner.

  1. A103631
    Disconnect the VSV hose.

  1. A126225
    Disconnect the 4 clamps.

  1. Remove the hose clamp and air cleaner cap with air cleaner hose.


8. REMOVE ENGINE UNDER COVER

9. DRAIN ENGINE COOLANT

NOTICE:
Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

  1. Remove the radiator cap and reservoir tank cap.

  1. Loosen the radiator drain cock plug and 2 cylinder block drain cock plugs. Then drain the coolant.

    HINT:
    Collect the coolant in a container and dispose of it according to the regulations in your area.


    A120242E01


10. 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.


11. REMOVE FRONT BUMPER ENERGY ABSORBER

  1. B125610
    Remove the front bumper energy absorber.


12. REMOVE RADIATOR SUPPORT OPENING COVER

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


13. 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.


14. 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.


15. 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.


16. REMOVE UPPER RADIATOR SUPPORT

  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.


17. REMOVE RADIATOR INLET HOSE

  1. A103691
    Remove the 2 clips and the radiator inlet hose from the radiator assembly.


18. REMOVE RADIATOR OUTLET HOSE

  1. A121411
    Remove the 2 clamps and the radiator outlet hose from the radiator assembly.


19. SEPARATE COOLER CONDENSER ASSEMBLY

  1. A120789
    Remove the 4 bolts, separate the cooler condenser assembly from the radiator assembly.


20. REMOVE ENGINE ROOM ECU OUTLET DUCT

  1. A103694E01
    Remove the engine room ECU outlet duct from the engine room ECU box.


21. REMOVE RESERVE TANK CAP SUB-ASSEMBLY

  1. A103690
    Separate the reserve tank cap sub-assembly from the reserve tank.


22. REMOVE RADIATOR ASSEMBLY

  1. A121412J01
    Remove the radiator assembly from the vehicle together with the cooling fan assembly.

    NOTICE:
    Make sure that the cooler condenser assembly and radiator assembly do not come into contact with each other.

  1. A103696
    Remove the 3 claws and the cooling fan assembly from the radiator assembly.

  1. A121392
    Remove the 2 radiator support cushions and the 2 lower radiator supports.

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