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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System - Service Information (2 Of 5) >> ENGINE ASSEMBLY (for 1Motor-HEV Model) >> Removal [10/2022 - ] >> Procedure

Removal [10/2022 - ]: Procedure

  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 1 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 1 [08/2023 - ]

  3. DISCHARGE FUEL SYSTEM PRESSURE 

    Refer to PRECAUTION [10/2022 - ]

  4. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD 

    Refer to PROCEDURE - Step 3 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 3 [08/2023 - ]

  5. SECURE STEERING WHEEL 
    Refer to PROCEDURE - Step 3 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 3 [08/2023 - ]
  6. REMOVE FRONT WHEELS 

    Refer to REMOVAL [10/2022 - ]

  7. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH 
    1. GTY1131662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH 
    1. GTY1131661Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE NO. 1 ENGINE UNDER COVER 
    1. GTY1131502Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt Screw
  10. REMOVE NO. 2 ENGINE UNDER COVER ASSEMBLY 
    1. GTY1131523Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt Screw
  11. REMOVE FRONT FENDER APRON SEAL LH 
    1. GTY1131659Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE FRONT FENDER APRON SEAL RH 
    1. GTY1130075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE FRONT FLOOR COVER LH 
    Refer to PROCEDURE - Step 4
  14. REMOVE FRONT FLOOR COVER RH 
    Refer to PROCEDURE - Step 47
  15. REMOVE HEADLIGHT ASSEMBLY LH 
  16. REMOVE FRONT BUMPER LOWER ABSORBER 

    Refer to PROCEDURE - Step 54 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 54 [08/2023 - ]

  17. REMOVE NO. 2 FRONT BUMPER REINFORCEMENT 

    Refer to PROCEDURE - Step 59 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 59 [08/2023 - ]

  18. DRAIN ENGINE COOLANT (for Engine) 

    Refer to PROCEDURE - Step 4

  19. DRAIN COOLANT (for Intercooler) 

    Refer to PROCEDURE - Step 4

  20. DRAIN ENGINE OIL 

    Refer to PROCEDURE - Step 2

  21. DRAIN HYBRID TRANSAXLE FLUID 
    Refer to PROCEDURE - Step 6
  22. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY 
    1. GTY1131594Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disengage the 3 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.

  23. REMOVE NO. 3 ENGINE COVER 
    1. GTY1131332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. REMOVE EV CONVERTER ASSEMBLY 

    Refer to REMOVAL [10/2022 - ]

  25. DISCONNECT FUEL TUBE SUB-ASSEMBLY 
    1. GTY1132480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the EFI fuel pipe clamp (Fuel Tube Sub-assembly Side) from the fuel tube connector.
      2. Disconnect the fuel tube sub-assembly.

        Refer to PRECAUTION [10/2022 - ]

  26. DISCONNECT NO. 1 RADIATOR HOSE 

    Refer to PROCEDURE - Step 6

  27. DISCONNECT NO. 2 RADIATOR HOSE 

    Refer to PROCEDURE - Step 30

  28. DISCONNECT NO. 2 INVERTER COOLING OUTLET HOSE 

    Refer to PROCEDURE - Step 17

  29. DISCONNECT SUCTION HOSE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 16 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 16 [08/2023 - ]
  30. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 17 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 17 [08/2023 - ]
  31. 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. GTY1132077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  32. DISCONNECT NO. 2 INVERTER COOLING HOSE 

    Refer to PROCEDURE - Step 6

  33. DISCONNECT NO. 5 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 15

  34. REMOVE WATER BY-PASS PIPE 
    1. GTY1132527Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Retainer - -
      Pull out - -
  35. REMOVE NO. 4 INVERTER COOLING HOSE 
    1. GTY1132075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. GTY1130794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  36. SEPARATE STEERING INTERMEDIATE SHAFT ASSEMBLY 
    Refer to PROCEDURE - Step 5 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 5 [08/2023 - ]
  37. REMOVE FRONT EXHAUST PIPE ASSEMBLY 

    Refer to REMOVAL [10/2022 - ]

  38. REMOVE FRONT DRIVE SHAFT ASSEMBLY 

    Refer to REMOVAL [10/2022 - ]

  39. SEPARATE TIE ROD ASSEMBLY LH 
    Refer to PROCEDURE - Step 6 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 6 [08/2023 - ]
  40. SEPARATE TIE ROD ASSEMBLY RH 
    1. Perform the same procedure as for the LH side.
  41. REMOVE ENGINE MOUNTING STAY LH 
    1. GTY1131658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  42. REMOVE FLOOR UNDER WIRE 
    Refer to PROCEDURE - Step 51
  43. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE 
    1. GTY1131261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Attachment Installation Position - -
      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 with transaxle.
    2. GTY1131400Courtesy 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 separate the engine mounting insulator sub-assembly LH from the transaxle assembly with motor and inverter.
      3. 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.
      4. 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.
      5. 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.
    3. Remove the No. 1 wiring harness heat insulator.

      Refer to PROCEDURE - Step 22

  44. REMOVE FUEL DELIVERY GUARD 
    1. GTY1131654Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  45. INSTALL ENGINE HANGERS 
    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.
    1. GTY1131837Courtesy 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 12281-25080
        No. 2 Engine Hanger 12282-25060
        Bolt 90105-A0354
      2. Using an engine sling device and engine lift, secure the engine assembly with transaxle.
  46. REMOVE WATER BY-PASS HOSE ASSEMBLY 

    Refer to PROCEDURE - Step 4

  47. REMOVE NO. 4 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 5

  48. REMOVE NO. 1 INVERTER COOLING HOSE ASSEMBLY 

    Refer to PROCEDURE - Step 6

  49. REMOVE STEERING GEAR HEAT INSULATOR 

    Refer to PROCEDURE - Step 13 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 13 [08/2023 - ]

  50. DISCONNECT ENGINE WIRE 
    Refer to PROCEDURE - Step 7
  51. REMOVE TCM 
    Refer to PROCEDURE - Step 6
  52. REMOVE NO. 1 TCM BRACKET 

    Refer to PROCEDURE - Step 7

  53. DISCONNECT HV AIR CONDITIONING WIRE 

    Refer to PROCEDURE - Step 11

  54. REMOVE WIRE HARNESS CLAMP BRACKET 

    Refer to PROCEDURE - Step 12

  55. REMOVE FLYWHEEL HOUSING SIDE COVER 

    Refer to PROCEDURE - Step 13

  56. REMOVE HV WATER PUMP BRACKET 

    Refer to PROCEDURE - Step 14

  57. REMOVE FRONT FRAME ASSEMBLY 

    Refer to PROCEDURE - Step 8 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 8 [08/2023 - 10/2024] , or refer to PROCEDURE - Step 8 [10/2024 - ]

  58. REMOVE FRONT ENGINE MOUNTING INSULATOR 
    1. GTY1127684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  59. DISCONNECT ENGINE WIRE 

    Refer to PROCEDURE - Step 17

  60. REMOVE FRONT ENGINE MOUNTING BRACKET 

    Refer to PROCEDURE - Step 18

  61. REMOVE REAR ENGINE MOUNTING INSULATOR 
    1. GTY1127730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  62. REMOVE REAR ENGINE MOUNTING BRACKET 

    Refer to PROCEDURE - Step 20

  63. REMOVE NO. 2 ENGINE AND INVERTER STIFFENER 

    Refer to PROCEDURE - Step 21

  64. REMOVE FLYWHEEL HOUSING UNDER COVER 
    1. GTY1131630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  65. REMOVE TRANSAXLE ASSEMBLY WITH MOTOR AND INVERTER 
    Refer to PROCEDURE - Step 22
  66. REMOVE FLYWHEEL SUB-ASSEMBLY 
    See step  2
  67. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR PLATE 

    See step  3

  68. REMOVE NO. 2 RADIATOR HOSE 
    1. GTY1131629Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  69. REMOVE ENGINE WIRE 

    HINT: 

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

    GTY1131631Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  70. REMOVE V-RIBBED BELT 
    Refer to PROCEDURE - Step 2
  71. REMOVE COMPRESSOR WITH MOTOR ASSEMBLY 
    Refer to PROCEDURE - Step 18 [10/2022 - 08/2023] , or refer to PROCEDURE - Step 18 [08/2023 - ]
  72. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY 
    NOTE:
    • Do not apply or add any oil or grease to the belt tensioner to prevent abnormal noises from the belt tensioner pulley, belt squealing, etc.
    • Do not allow oil or grease to adhere to the moving parts of the belt tensioner, as this may cause malfunctions.
    GTY743260Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. GTY1133184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  73. INSTALL ENGINE ASSEMBLY TO ENGINE STAND 
    1. GTY996339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  74. REMOVE ENGINE HANGERS 
  75. DISCONNECT INTERCOOLER RESERVE TANK ASSEMBLY 

    HINT: 

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

    1. GTY1131627Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  76. DISCONNECT RADIATOR RESERVE TANK ASSEMBLY 

    HINT: 

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

    1. GTY1131626Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  77. 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. GTY1130067Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  78. REMOVE ENGINE MOUNTING SPACER 

    HINT: 

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

    1. GTY1131628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  79. 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. GTY1131625Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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