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Home >> Lexus >> 2019 >> RX 450h Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (Service Information) (1 Of 2) >> Engine Assembly >> Removal [08/2016 - 12/2017] >> Procedure

Removal [08/2016 - 12/2017]: Procedure

  1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    Refer to PROCEDURE - Step 1

  2. DISCHARGE FUEL SYSTEM PRESSURE 

    Refer to PRECAUTION [10/2015 - 12/2017]

  3. PRECAUTION 
    NOTE:

    After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Refer to PRECAUTION [08/2016 - 12/2017]

  4. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH 
    1. Remove the 2 screws and front wheel opening extension pad LH from the No. 3 engine under cover.
  5. REMOVE NO. 3 ENGINE UNDER COVER 
    1. Remove the 5 bolts, 4 screws, 2 clips and No. 3 engine under cover from the vehicle body.
  6. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH 
    1. Remove the 2 screws and front wheel opening extension pad RH from the No. 1 engine under cover.
  7. REMOVE NO. 1 ENGINE UNDER COVER 
    1. Remove the 3 bolts, 4 screws, clip and No. 1 engine under cover from the vehicle body.
  8. REMOVE NO. 2 ENGINE UNDER COVER 
    1. Remove the 2 bolts, 2 screws, clip and No. 2 engine under cover from the front frame assembly.
  9. REMOVE FRONT FENDER APRON SEAL LH 
    1. Remove the 2 bolts, clip and front fender apron seal LH from the vehicle body.
  10. REMOVE FRONT FENDER APRON SEAL RH 
    1. Remove the 2 bolts, clip and front fender apron seal RH from the vehicle body.
  11. REMOVE FRONT FLOOR COVER LH 

    Refer to PROCEDURE - Step 1

  12. DISCONNECT BRAKE BOOSTER PUMP CONNECTOR 

    HINT: 

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

    Refer to PROCEDURE - Step 2

  13. PERFORM ACCUMULATOR PRESSURE ZERO DOWN 

    HINT: 

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

    Refer to PROCEDURE - Step 3

  14. DRAIN BRAKE FLUID 

    HINT: 

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

    Refer to PROCEDURE - Step 4

  15. DRAIN ENGINE COOLANT (for Engine) 

    Refer to PROCEDURE - Step 3

  16. DRAIN ENGINE OIL 

    Refer to PROCEDURE - Step 1

  17. DRAIN COOLANT (for Inverter) 

    Refer to PROCEDURE - Step 3

  18. DRAIN HYBRID TRANSAXLE FLUID 

    Refer to PROCEDURE - Step 1

  19. REMOVE INVERTER WITH CONVERTER ASSEMBLY 

    Refer to REMOVAL [08/2016 - 12/2017]

  20. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD 
  21. SECURE STEERING WHEEL 

    Refer to PROCEDURE - Step 2

  22. REMOVE FRONT WHEELS 

    Refer to REMOVAL [10/2015 - ]

  23. REMOVE V-BANK COVER SUB-ASSEMBLY 
    1. GTY645398Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Hold the rear of the V-bank cover sub-assembly and raise it to disengage the 2 rear clips.

    2. Raise the V-bank cover sub-assembly to disengage the 2 front clips and remove the V-bank cover sub-assembly.
      NOTE:

      Attempting to disengage both front and rear clips at the same time may cause the V-bank cover sub-assembly to break.

  24. REMOVE INVERTER TRAY BRACKET SUB-ASSEMBLY 
    1. Disengage the clamp to disconnect the outlet No. 1 inverter cooling hose from the inverter tray bracket sub-assembly.
      GTY645399Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 5 bolts and inverter tray bracket sub-assembly.
  25. REMOVE BATTERY CARRIER SUB-ASSEMBLY 
    1. Disengage the clamp to disconnect the wire harness from the battery carrier sub-assembly.
      GTY645397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 6 bolts and battery carrier sub-assembly.
  26. DISCONNECT NO. 1 MOTOR COOLING HOSE 

    Refer to PROCEDURE - Step 36

  27. DISCONNECT INLET MOTOR HOSE 

    Refer to PROCEDURE - Step 37

  28. REMOVE ECM ASSEMBLY 

    Refer to PROCEDURE - Step 6

  29. DISCONNECT WIRE HARNESS 

    HINT: 

    After disconnecting the wire harness, secure it with tape or equivalent to keep it out of the way.

    1. Remove the bolt and disconnect the engine wire from the vehicle body.
      GTY645411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 3 connectors from the engine room relay block assembly.
    3. Disengage the 3 clamps.
    4. Using a screwdriver, disengage the claw and disconnect the engine wire from the engine room relay block assembly.
    5. GTY645412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Disengage the clamp and disconnect the engine wire from the vehicle body.

    6. GTY645410Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt and disconnect the No. 2 earth wire from the wire harness bracket.

  30. DISCONNECT NO. 1 RADIATOR HOSE 
    1. Separate the No. 1 radiator hose from the radiator pipe clamp.
      GTY679757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Slide the clip and disconnect the No. 1 radiator hose from the water outlet.
  31. DISCONNECT NO. 2 RADIATOR HOSE 
    1. Slide the clip and disconnect the No. 2 radiator hose from the water inlet with thermostat sub-assembly.
      GTY645407Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  32. DISCONNECT INLET HEATER WATER HOSE 
    1. GTY645409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Disengage the clamp.

    2. Slide the clip and disconnect the inlet heater water hose from the water outlet.
  33. DISCONNECT OUTLET HEATER WATER HOSE 
    1. GTY645406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Slide the clip and disconnect the outlet heater water hose from the water inlet pipe.

  34. DISCONNECT NO. 1 FUEL VAPOR FEED HOSE 
    1. Slide the clip and disconnect the No. 1 fuel vapor feed hose from the No. 1 vacuum switching valve assembly.
      GTY679758Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  35. SEPARATE BRAKE MASTER CYLINDER RESERVOIR ASSEMBLY 

    Refer to PROCEDURE - Step 12

  36. REMOVE RESERVOIR BRACKET 

    Refer to PROCEDURE - Step 13

  37. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 5

  38. DISCONNECT SUCTION HOSE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 6

  39. DISCONNECT NO. 1 FUEL HOSE 
    1. Remove the No. 2 fuel pipe clamp from the fuel tube connector.
      GTY645413Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Refer to PRECAUTION [10/2015 - 12/2017]

    2. Disconnect the No. 1 fuel hose from the fuel pipe.

      Refer to PRECAUTION [10/2015 - 12/2017]

  40. REMOVE FRONT NO. 3 EXHAUST PIPE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 16

  41. REMOVE FRONT EXHAUST PIPE ASSEMBLY 

    Refer to PROCEDURE - Step 23

  42. SEPARATE STEERING INTERMEDIATE SHAFT ASSEMBLY 

    Refer to PROCEDURE - Step 5

  43. REMOVE FRONT DRIVE SHAFT ASSEMBLY 

    Refer to REMOVAL [10/2015 - ]

  44. DISCONNECT TRANSMISSION CONTROL CABLE ASSEMBLY 

    Refer to PROCEDURE - Step 8

  45. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET 
    1. Remove the 2 bolts and No. 1 exhaust pipe support bracket from the oil pan sub-assembly.
      GTY645414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  46. REMOVE FLYWHEEL HOUSING UNDER COVER 
    1. Remove the 2 bolts and flywheel housing under cover from the hybrid vehicle transaxle assembly.
      GTY679760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  47. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE 
    1. Using height adjustment attachments and plate lift attachments to keep the engine assembly with transaxle and front frame assembly level, set an engine lifter underneath the engine assembly with transaxle and front frame assembly.
      NOTE:
      • 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.
      GTY948487Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Attachment Installation Position
    2. GTY645422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt and nut and separate the engine mounting bracket LH from the engine mounting insulator LH.

    3. GTY645415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt, 2 nuts and No. 2 engine mounting stay RH.

    4. GTY645421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 bolts and 2 nuts and separate the engine mounting insulator sub-assembly RH from the front No. 1 engine mounting bracket LH.

    5. GTY656618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut

      Remove the 6 bolts, 2 nuts, frame side rail plate sub-assembly RH and frame side rail plate sub-assembly LH from the front frame assembly and vehicle body.

    6. Remove the 6 bolts, 2 nuts, front suspension member bracket sub-assembly RH and front suspension member bracket sub-assembly LH from the front frame assembly and vehicle body.
    7. 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.
  48. DISCONNECT WIRE HARNESS 

    Refer to PROCEDURE - Step 12

  49. REMOVE NO. 2 EGR PIPE 

    Refer to PROCEDURE - Step 15

  50. REMOVE NO. 2 EGR PIPE GASKET 

    Refer to PROCEDURE - Step 16

  51. DISCONNECT WATER BY-PASS HOSE ASSEMBLY 

    Refer to PROCEDURE - Step 15

  52. DISCONNECT NO. 6 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 16

  53. REMOVE EGR VALVE ASSEMBLY 

    Refer to PROCEDURE - Step 17

  54. REMOVE MANIFOLD STAY 

    Refer to PROCEDURE - Step 19

  55. REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst) 

    Refer to PROCEDURE - Step 21

  56. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1) 

    Refer to PROCEDURE - Step 22

  57. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR 

    Refer to PROCEDURE - Step 28

  58. REMOVE NO. 2 MANIFOLD STAY 

    Refer to PROCEDURE - Step 31

  59. REMOVE EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst) 

    Refer to PROCEDURE - Step 32

  60. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2) 

    Refer to PROCEDURE - Step 33

  61. INSTALL ENGINE HANGERS 
    1. Disengage the clamp to disconnect the wire harness from the wire harness bracket.
      GTY679759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt and wire harness bracket from the engine assembly.
    3. Install the No. 1 engine hanger and No. 2 engine hanger with the 4 bolts as shown in the illustration.

      Torque: 33 N*m (337 kgf*cm, 24 ft.*lbf) 

      HINT: 

      No. 1 Engine Hanger 12281-31121
      No. 2 Engine Hanger 12282-31100
      Bolt 91671-10825
      GTY674385Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A for Bank 1
      *B for Bank 2
      *1 No. 1 Engine Hanger
      *2 No. 2 Engine Hanger
    4. 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.
  62. REMOVE ENGINE WIRE 
    1. Disconnect all clamps and connectors and remove the engine wire from the engine assembly with transaxle.
  63. SEPARATE FRONT NO. 1 STABILIZER BRACKET LH 

    Refer to PROCEDURE - Step 10

  64. SEPARATE FRONT NO. 1 STABILIZER BRACKET RH 

    HINT: 

    Perform the same procedure as for the LH side.

  65. REMOVE FRONT NO. 2 STABILIZER BRACKET LH 

    Refer to PROCEDURE - Step 12

  66. REMOVE FRONT NO. 2 STABILIZER BRACKET RH 

    HINT: 

    Perform the same procedure as for the LH side.

  67. REMOVE FRONT STABILIZER BAR 

    Refer to PROCEDURE - Step 17

  68. REMOVE STEERING LINK ASSEMBLY 

    Refer to PROCEDURE - Step 15

  69. REMOVE FRONT FRAME ASSEMBLY 
    1. Remove the bolt and separate the front engine mounting insulator from the front engine mounting bracket.
      GTY645425Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. GTY645426Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt and separate the rear engine mounting insulator with the front frame assembly from the rear engine mounting bracket.

  70. REMOVE REAR ENGINE MOUNTING BRACKET 
    1. Using height adjustment attachments and plate lift attachments to keep the hybrid vehicle transaxle assembly level, set an engine lifter underneath the hybrid vehicle transaxle assembly.
      NOTE:
      • Using rope, attachments or equivalent tools, firmly secure the hybrid vehicle transaxle assembly to the engine lifter.
      • Using an engine sling device and engine lift, secure the engine assembly before servicing.
    2. Remove the rear engine mounting bracket.

      Refer to PROCEDURE - Step 44

  71. REMOVE MOTOR CABLE BRACKET 

    Refer to PROCEDURE - Step 45

  72. REMOVE NO. 3 AUTOMATIC TRANSMISSION CASE COVER 

    Refer to PROCEDURE - Step 46

  73. REMOVE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

    Refer to PROCEDURE - Step 49

  74. REMOVE TRANSMISSION INPUT DAMPER ASSEMBLY 
    1. Using height adjustment attachments and plate lift attachments, place the engine assembly on a flat level surface.
      NOTE:
      • Using height adjustment attachments and plate lift attachments, keep the engine assembly horizontal.
      • 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.
      • Using an engine sling device and engine lift, secure the engine assembly before servicing.
    2. Remove the transmission input damper assembly.

      See step  2

  75. REMOVE FLYWHEEL SUB-ASSEMBLY 

    See step  3

  76. INSTALL ENGINE ASSEMBLY TO ENGINE STAND 
    1. Install the engine assembly to an engine stand.
  77. REMOVE ENGINE HANGERS 
    1. Remove the 4 bolts, No. 1 engine hanger and No. 2 engine hanger.
  78. REMOVE FRONT ENGINE MOUNTING INSULATOR 

    HINT: 

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

    1. GTY671721Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the hole plug from the front frame assembly.

    2. GTY645433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 3 nuts and front engine mounting insulator from the front frame assembly.

  79. REMOVE REAR ENGINE MOUNTING INSULATOR 

    HINT: 

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

    1. GTY685561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 hole plugs from the front frame assembly.

    2. GTY645434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 4 nuts and rear engine mounting insulator from the front frame assembly.

  80. 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. Remove the brake booster pump assembly with bracket.

      Refer to REMOVAL [08/2016 - 03/2018]

    2. Remove the nut, 2 bolts and engine mounting insulator sub-assembly RH from the engine mounting spacer and vehicle body.
      GTY645427Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  81. REMOVE ENGINE MOUNTING SPACER 

    HINT: 

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

    1. GTY645428Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 bolts and engine mounting spacer from the vehicle body.

  82. REMOVE ENGINE MOUNTING INSULATOR LH 

    HINT: 

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

    1. Remove the 4 bolts and engine mounting insulator LH from the hybrid vehicle transaxle assembly.
      GTY651043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  83. REMOVE ENGINE MOUNTING BRACKET LH 

    HINT: 

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

    1. Disengage the clamp to disconnect the wire harness from the engine mounting bracket LH.
      GTY651382Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Do not remove
    2. Remove the 8 bolts and engine mounting bracket LH from the vehicle body.
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