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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Engine Mechanical System - Service Information (3 Of 4)) >> ENGINE ASSEMBLY (for PHEV Model) >> Removal [08/2023 - ] >> Procedure

Removal [08/2023 - ]: Procedure

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  1. PRECAUTION 
    NOTE:

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.

    Refer to BEFORE DISCONNECTING BATTERY [10/2022 - ]
  2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    Refer to PROCEDURE - Step 2

  3. DISCHARGE FUEL SYSTEM PRESSURE 

    Refer to PRECAUTION [08/2023 - ]

  4. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD 

    Refer to PROCEDURE - Step 2

  5. SECURE STEERING WHEEL 
    Refer to PROCEDURE - Step 3
  6. REMOVE FRONT WHEELS 

    Refer to REMOVAL [10/2022 - ]

  7. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH 
    1. GTY1131166Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH 
    1. GTY1131173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE NO. 1 ENGINE UNDER COVER 
    1. GTY1132885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt Screw
  10. REMOVE NO. 2 ENGINE UNDER COVER ASSEMBLY 
    1. GTY1204741Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt Screw
  11. REMOVE FRONT FENDER APRON SEAL LH 
    1. GTY1131212Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE FRONT FENDER APRON SEAL RH 
    1. GTY1131211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE FRONT BUMPER ASSEMBLY 

    for Sport Package:

    Refer to REMOVAL [10/2022 - ]

    except Sport Package:

    Refer to REMOVAL [10/2022 - ]

  14. REMOVE FRONT BUMPER LOWER ABSORBER 

    Refer to PROCEDURE - Step 53

  15. REMOVE NO. 2 FRONT BUMPER REINFORCEMENT 

    Refer to PROCEDURE - Step 56

  16. DRAIN ENGINE COOLANT (for Engine) 

    Refer to PROCEDURE - Step 4

  17. DRAIN ENGINE OIL 

    Refer to PROCEDURE - Step 2

  18. DRAIN HYBRID TRANSAXLE FLUID 

    Refer to PROCEDURE - Step 2 [10/2022 - 10/2024] , or refer to PROCEDURE - Step 2 [10/2024 - ]

  19. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY 
    1. GTY1131529Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disengage the 4 clips and remove the No. 1 engine cover sub-assembly.
        NOTE:

        Pull the No. 1 engine cover sub-assembly straight up when removing. If the No. 1 engine cover sub-assembly is not pulled straight up when removing, it may become damaged.

  20. REMOVE HYBRID MOTOR CONTROL INVERTER ASSEMBLY 

    Refer to REMOVAL [08/2023 - ]

  21. DISCONNECT FUEL VAPOR FEED HOSE ASSEMBLY 
    1. GTY1131209Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. DISCONNECT OUTLET HEATER WATER HOSE 
    1. GTY1206066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Retainer - -
      Pull out Pull off
      1. Disconnect the outlet heater water hose connector from the No. 2 water by-pass pipe sub-assembly.
        NOTE:

        Remove any foreign matter on the No. 2 water by-pass pipe sub-assembly and outlet heater water hose connector before performing this work.

        1. Pull out the retainer to disengage the lock claws and pull off the outlet heater water hose connector.

        2. Check that there is no foreign matter on the sealing surfaces of the disconnected water lines. Clean them if necessary.

        3. Cover the disconnected No. 2 water by-pass pipe sub-assembly and outlet heater water hose connector with plastic bags to prevent damage and contamination.

  23. DISCONNECT INLET HEATER WATER HOSE 
    1. GTY1206144Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Retainer - -
      Pull out Pull off
      1. Disconnect the inlet heater water hose connector from the flow shutting valve (water by-pass hose assembly).
        NOTE:

        Remove any foreign matter on the flow shutting valve (water by-pass hose assembly) and inlet heater water hose connector before performing this work.

        1. Pull out the retainer to disengage the lock claws and pull off the inlet heater water hose connector.

        2. Check that there is no foreign matter on the sealing surfaces of the disconnected water lines. Clean them if necessary.

        3. Cover the disconnected inlet heater water hose connector with a plastic bag to prevent damage and contamination.

  24. DISCONNECT FUEL TUBE SUB-ASSEMBLY 
    1. GTY1131269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the No. 1 fuel pipe clamp from the fuel tube connector.
      2. Disconnect the fuel tube sub-assembly.

        Refer to PRECAUTION [08/2023 - ]

  25. DISCONNECT NO. 1 RADIATOR HOSE 
    1. GTY1131204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. DISCONNECT NO. 2 RADIATOR HOSE 
    1. GTY1205421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. DISCONNECT SUCTION HOSE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 23
  28. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 24
  29. DISCONNECT WIRE HARNESS 
    NOTE:

    When disconnecting a wire harness of any component connected to the supply power of the integrated capacitor (integration control supply) or when removing the integrated capacitor (integration control supply), make sure to wait 5 minutes or more after turning the ignition switch off for self-diagnosis to complete and the voltage of the integrated capacitor (integration control supply) to discharge.

    HINT: After disconnecting the wire harness, secure it with tape or equivalent to keep it out of the way.
    1. GTY1205151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  30. DISCONNECT FLOOR UNDER WIRE 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1204450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Green-colored Lock - -
      Slide - -
      1. Using a screwdriver, slide the green-colored lock of the connector as shown in the illustration to release it and disconnect the floor under wire.
  31. DISCONNECT NO. 5 INVERTER COOLING HOSE 
    1. GTY1131182Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  32. DISCONNECT NO. 1 TRANSMISSION OIL COOLER HOSE ASSEMBLY 
    1. GTY1132239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Inlet Motor Hose *2 Outlet Motor Hose
  33. DISCONNECT NO. 5 WATER BY-PASS HOSE 
    1. GTY1205420Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  34. SEPARATE STEERING INTERMEDIATE SHAFT ASSEMBLY 
    Refer to PROCEDURE - Step 5
    NOTE:

    If matchmarks were not placed when removing parts related to steering operation, perform automatic rack centering.
  35. REMOVE FRONT FLOOR COVER LH 
    1. GTY1203522Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 2 bolts (A), 3 screws (B) and 7 clips (C).
      2. Turn the 2 clips (D) and remove the front floor cover LH from the vehicle body.
        NOTE:

        If the 2 clips are not turned when the front floor cover LH is removed, the front floor cover LH or stud bolt may be damaged.

        HINT: 

        Do not remove the clips from the front floor cover LH.

  36. REMOVE FRONT FLOOR COVER RH 
    1. GTY1132561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 4 bolts (A), 3 screws (B) and clip (C).
      2. Turn the 3 clips (D) and remove the front floor cover RH from the vehicle body.
        NOTE:

        If the 3 clips are not turned when the front floor cover RH is removed, the front floor cover RH or stud bolt may be damaged.

        HINT: 

        Do not remove the clips from the front floor cover RH.

  37. REMOVE ENGINE UNDER COVER HEAT INSULATOR 
    Refer to PROCEDURE - Step 14
  38. REMOVE FRONT EXHAUST PIPE ASSEMBLY 
    Refer to PROCEDURE - Step 5
  39. REMOVE FRONT DRIVE SHAFT ASSEMBLY 

    Refer to REMOVAL [08/2023 - ]

  40. SEPARATE TIE ROD ASSEMBLY LH 
    Refer to PROCEDURE - Step 6
  41. SEPARATE TIE ROD ASSEMBLY RH 

    Refer to PROCEDURE - Step 7

  42. REMOVE TRANSMISSION OIL COOLER AIR DUCT 

    Refer to PROCEDURE - Step 6 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 6 [10/2024 - ]

  43. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE 
    1. GTY1132615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Attachments - -
      1. Set the engine assembly with transaxle on an engine lifter.
        NOTE:
        • Using height adjustment attachments and plate lift attachments, keep the engine assembly with transaxle level.
        • Do not perform any procedures while the engine assembly is suspended because doing so may cause the engine assembly to drop, resulting in injury. However, the engine assembly needs to be suspended when it is installed to or removed from an engine stand.
        • To prevent the engine assembly from unexpectedly moving, securely support the engine assembly until it is secured to an engine stand.
        • To prevent the No. 2 oil pan sub-assembly from deforming, do not place any attachments under the No. 2 oil pan sub-assembly of the engine assembly.
    2. GTY1205475Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Front Bumper Extension Sub-assembly LH *2 Front Bumper Extension Sub-assembly RH
      *3 Front Suspension Member Brace Rear LH *4 Front Suspension Member Brace Rear RH
      Bolt Nut
      1. Remove the 3 bolts and nut and separate the engine mounting insulator sub-assembly RH from the engine mounting bracket RH.
      2. Remove the 4 bolts and the engine mounting stay LH from the engine mounting insulator sub-assembly LH.
      3. Remove the 4 bolts and separate the engine mounting insulator sub-assembly LH from the hybrid vehicle transaxle assembly.
      4. Remove the 2 bolts (A), 2 bolts (B) and 4 nuts and front bumper extension sub-assembly LH and front bumper extension sub-assembly RH from the front frame assembly and vehicle body.
      5. Remove the 2 bolts (C), 4 bolts (D) and front suspension member brace rear LH and front suspension member brace rear RH from the front frame assembly and vehicle body.
      6. Operate the engine lifter and remove the engine assembly with transaxle from the vehicle.
        NOTE:
        • Make sure that the engine assembly with transaxle is clear of all wiring and hoses.
        • While lowering the engine assembly with transaxle from the vehicle, do not allow it to contact the vehicle.
  44. REMOVE FUEL DELIVERY GUARD 
    1. GTY1131177Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  45. INSTALL ENGINE HANGERS 
    1. GTY1132402Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Engine Hanger *2 No. 2 Engine Hanger
      1. Install the No. 1 engine hanger and No. 2 engine hanger with the 4 bolts as shown in the illustration.

        Torque: 43 N.m (438 kgf/cm, 32 ft.lbf) 

        HINT: 

        No. 1 Engine Hanger 12281-25030
        No. 2 Engine Hanger 12282-25010
        Bolt 91552-F1040
      2. Using an engine sling device and engine lift, secure the engine assembly with transaxle.
        NOTE:
        • Pay attention to the angle of the sling device as the engine assembly or No. 1 engine hanger and No. 2 engine hanger may be damaged or deformed if the angle is incorrect.
        • Do not perform any procedures while the engine assembly is suspended because doing so may cause the engine assembly to drop, resulting in injury. However, the engine assembly needs to be suspended when it is installed to or removed from an engine stand.
  46. REMOVE STEERING GEAR HEAT INSULATOR 

    Refer to PROCEDURE - Step 13

  47. DISCONNECT ENGINE WIRE 
    Refer to PROCEDURE - Step 6 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 6 [10/2024 - ]
  48. REMOVE FLYWHEEL HOUSING UNDER COVER 
    1. GTY1130182Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  49. REMOVE HV AIR CONDITIONING WIRE 
    1. GTY1205029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Green-colored Lock - -
      Slide - -
      1. Disengage the 2 clamps.
      2. Using a screwdriver, slide the green-colored lock of the connector as shown in the illustration to release it and disconnect the connector.
        WARNING:

        Make sure to wear insulated gloves.

        NOTE:

        Insulate the disconnected terminals and connector with insulating tape.

      3. Remove the 2 bolts and disengage the guide to remove the HV air conditioning wire from the hybrid vehicle transaxle assembly.
  50. DISCONNECT NO. 2 TRANSMISSION OIL COOLER HOSE ASSEMBLY 

    Refer to PROCEDURE - Step 6 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 6 [10/2024 - ]

  51. REMOVE WIRE HARNESS CLAMP BRACKET 

    Refer to PROCEDURE - Step 7 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 7 [10/2024 - ]

  52. REMOVE OIL PUMP WITH MOTOR ASSEMBLY 

    Refer to PROCEDURE - Step 8 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 8 [10/2024 - ]

  53. REMOVE FLYWHEEL HOUSING SIDE COVER 

    Refer to PROCEDURE - Step 13 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 14 [10/2024 - ]

  54. REMOVE FRONT FRAME ASSEMBLY 

    Refer to PROCEDURE - Step 8 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 8 [10/2024 - ]

  55. REMOVE FRONT ENGINE MOUNTING INSULATOR 

    HINT: 

    Perform this procedure only when replacement of the front engine mounting insulator is necessary.

    1. GTY1131144Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  56. REMOVE REAR ENGINE MOUNTING INSULATOR 

    HINT: 

    Perform this procedure only when replacement of the rear engine mounting insulator is necessary.

    1. GTY1205154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  57. REMOVE HYBRID VEHICLE TRANSAXLE ASSEMBLY 
    Refer to PROCEDURE - Step 19 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 20 [10/2024 - ]
  58. REMOVE TRANSMISSION INPUT DAMPER ASSEMBLY 
    Refer to PROCEDURE - Step 2
  59. REMOVE FLYWHEEL SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 3
  60. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR PLATE 

    Refer to PROCEDURE - Step 4

  61. REMOVE ENGINE WIRE 

    HINT: 

    As the illustration shown is an example, the actual details may differ.

    GTY1205096Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  62. INSTALL ENGINE ASSEMBLY TO ENGINE STAND 
    1. GTY996339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  63. REMOVE ENGINE HANGERS 
  64. DISCONNECT INVERTER RESERVE TANK ASSEMBLY 

    HINT: 

    Perform this procedure only when replacement of the engine mounting insulator sub-assembly RH is necessary.

    1. GTY1205097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  65. REMOVE ENGINE MOUNTING INSULATOR SUB-ASSEMBLY RH 

    HINT: 

    Perform this procedure only when replacement of the engine mounting insulator sub-assembly RH is necessary.

    1. GTY1205156Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. GTY1205155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  66. REMOVE ENGINE MOUNTING SPACER 

    HINT: 

    Perform this procedure only when replacement of the engine mounting spacer is necessary.

    1. GTY1130262Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  67. REMOVE ENGINE MOUNTING INSULATOR SUB-ASSEMBLY LH 

    HINT: 

    Perform this procedure only when replacement of the engine mounting insulator sub-assembly LH is necessary.

    1. GTY1130628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using SST, remove the bolt (A) from the engine mounting insulator sub-assembly LH.
        • SST: 09961-01270 
      2. Remove the bolt and nut from the engine mounting insulator sub-assembly LH.
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