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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Hybrid Transaxle System (L310) - Service Information (1 Of 2)) >> Hybrid Vehicle Transmission >> Installation [10/2017 - 09/2018] >> Procedure

Installation [10/2017 - 09/2018]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. INSTALL AUTOMATIC TRANSMISSION CASE COVER 
    1. Install the automatic transmission case cover with the 4 bolts.
      GTY834861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 5.4 N.m (55 kgf/cm, 48 in.lbf) 

  2. INSTALL DYNAMIC DAMPER 
    NOTE:
    GTY809033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Upper Side
    *b RH Side

    Check the installation direction of the dynamic damper before installing it.

    1. GTY809759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Using a T40 "TORX" socket wrench, install the dynamic damper with the 2 bolts.

      Torque: 20 N.m (204 kgf/cm, 15 ft.lbf) 

    2. GTY809760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Using a T40 "TORX" socket wrench, install the dynamic damper with the 2 bolts.

      Torque: 20 N.m (204 kgf/cm, 15 ft.lbf) 

  3. INSTALL BRACKET 
    1. Install the 6 brackets with the 6 bolts.
      GTY809091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 3 Wiring Harness Clamp Bracket
      *2 No. 2 Wiring Harness Clamp Bracket
      *3 Wiring Harness Clamp Bracket
      *4 No. 1 Wiring Harness Clamp Bracket
      *5 Transmission Oil Pump Insulator Bracket
      *6 No. 2 Heat Insulator Bracket
      Bolt A
      Bolt B
      Bolt C

      for bolt A 

      Torque: 7.0 N.m (71 kgf/cm, 62 in.lbf) 

      for bolt B 

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

      for bolt C 

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

  4. INSTALL HYBRID VEHICLE TRANSMISSION ASSEMBLY 
    1. Make sure that the knock pins are installed on the engine assembly.
    2. Install the hybrid vehicle transmission assembly to the engine assembly with the 9 bolts as shown in the illustration.

      for bolt A 

      Torque: 71 N.m (724 kgf/cm, 52 ft.lbf) 

      for bolt B 

      Torque: 37 N.m (377 kgf/cm, 27 ft.lbf) 

      GTY832311Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt A
      Bolt B
      WARNING:
      • Do not raise the hybrid vehicle transmission assembly more than necessary.
      • Make sure to confirm the center of the gravity of the hybrid vehicle transmission assembly when supporting it.
      NOTE:
      • Before tightening, check that the contact surfaces of the engine assembly and hybrid vehicle transmission assembly are in close contact.
      • Do not apply grease either to the splines or input shaft.

      HINT: 

      Bolt Bolt Length
      A 50 mm (1.97 in.)
      B 43 mm (1.69 in.)
  5. INSTALL REAR ENGINE MOUNTING INSULATOR 
    1. GTY809761Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the rear engine mounting insulator with the 4 bolts.

      Torque: 34 N.m (347 kgf/cm, 25 ft.lbf) 

  6. INSTALL ENGINE REAR MOUNTING MEMBER 
    1. GTY784276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the engine rear mounting member with the 3 nuts.

      Torque: 41 N.m (418 kgf/cm, 30 ft.lbf) 

    2. Connect the No. 2 parking lock release cable assembly to the shift control actuator assembly with the nut, spring washer and 2 bolts.
      GTY781521Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut and Spring Washer

      for bolt 

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

      for nut 

      Torque: 12.7 N.m (130 kgf/cm, 9 ft.lbf) 

  7. INSTALL FLYWHEEL HOUSING SIDE COVER 
    1. Install the flywheel housing side cover to the engine assembly as shown in the illustration.
      GTY837179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL STARTER HOLE INSULATOR 
    1. Install the starter hole insulator with the 2 bolts.
      GTY820249Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 58 N.m (591 kgf/cm, 43 ft.lbf) 

  9. INSTALL OIL COOLER WITHOUT HOSE TUBE SUB-ASSEMBLY 
    1. GTY834807Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the No. 1 oil cooler outlet hose to the oil cooler without hose tube sub-assembly and oil cooler union sub-assembly, and slide the 2 clips to secure the hose.

      NOTE:
      • When connecting the No. 1 oil cooler outlet hose, align with the colors and positions of the paint mark before connecting.
      • After connecting the No. 1 oil cooler outlet hose, check that the hose is not twisted.
    2. GTY809537Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the No. 1 oil cooler inlet hose to the oil cooler without hose tube sub-assembly and oil cooler union sub-assembly, and slide the 2 clips to secure the hose.

      NOTE:
      • When connecting the No. 1 oil cooler inlet hose, align with the colors and positions of the paint mark before connecting.
      • After connecting the No. 1 oil cooler inlet hose, check that the hose is not twisted.
    3. GTY820232Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the No. 2 oil cooler outlet hose to the oil cooler without hose tube sub-assembly, and slide the clip to secure the hose.

      NOTE:
      • When connecting the No. 2 oil cooler outlet hose, align with the colors and positions of the paint mark before connecting.
      • After connecting the No. 2 oil cooler outlet hose, check that the hose is not twisted.
    4. GTY820234Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the No. 2 oil cooler inlet hose to the oil cooler without hose tube sub-assembly, and slide the clip to secure the hose.

      NOTE:
      • When connecting the No. 2 oil cooler inlet hose, align with the colors and positions of the paint mark before connecting.
      • After connecting the No. 2 oil cooler inlet hose, check that the hose is not twisted.
    5. Temporarily install the oil cooler union sub-assembly with the 2 union bolts, 4 new gaskets and 2 bolts (B).
      GTY835181Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Oil Cooler without Hose Tube Sub-assembly *2 Oil Cooler Union Sub-assembly
    6. Temporarily install the oil cooler without hose tube sub-assembly with the 2 bolts (A).
    7. Tighten the 2 union bolts and 4 bolts.

      for union bolt 

      Torque: 27.5 N.m (280 kgf/cm, 20 ft.lbf) 

      for bolt 

      Torque: 22 N.m (224 kgf/cm, 16 ft.lbf) 

    8. Connect the 9 wire harness clamps.
      GTY835742Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Connect the oil pump thermistor connector.
    10. GTY821685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Connect the No. 2 oil cooler inlet hose to the motor cooling cooler, and slide the clip to secure the hose.

      NOTE:
      • When connecting the No. 2 oil cooler inlet hose, align with the colors and positions of the paint mark before connecting.
      • After connecting the No. 2 oil cooler inlet hose, check that the hose is not twisted.
      • Do not deform the motor cooling cooler.
  10. INSTALL WIRE HARNESS CLAMP BRACKET 
    1. Install the wire harness clamp bracket with the bolt.

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

      HINT: 

      Align the cutout with the protrusion as shown in the illustration.

      GTY821606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion
      *b Cutout
  11. INSTALL ENGINE MOTOR CABLE CLAMP BRACKET 
    1. Install the engine motor cable clamp bracket with the bolt.

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

      HINT: 

      Align the cutout with the protrusion as shown in the illustration.

      GTY831266Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion
      *b Cutout
    2. Install the engine motor cable clamp bracket with the 2 bolts.

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

      GTY821986Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the engine motor cable clamp bracket with the bolt.

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

      HINT: 

      Align the hole with the protrusion as shown in the illustration.

      GTY796661Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion
      *b Hole
  12. INSTALL NO. 1 TRANSMISSION BREATHER ASSEMBLY 
    1. Install the transmission breather hose to the No. 1 transmission breather assembly, and slide the clip to secure the hose.
      NOTE:
      • Install the long side of the transmission breather hose to the breather tube.

        Side B of the transmission breather hose is longer than side A.

      • Install the clip facing upwards so that it does not interfere with other parts when the No. 1 transmission breather assembly is installed to the hybrid vehicle transmission assembly.
      • Check that the clip is not interfering with other parts after installing the No. 1 transmission breather assembly to the hybrid vehicle transmission.
      GTY794738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Transmission Breather Assembly
      *2 Transmission Breather Hose
    2. GTY832876Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt A
      Bolt B

      Install the No. 1 transmission breather assembly with the 2 bolts and connect the 3 clamps.

      for bolt A 

      Torque: 7.0 N.m (71 kgf/cm, 62 in.lbf) 

      for bolt B 

      Torque: 16 N.m (163 kgf/cm, 12 ft.lbf) 

  13. INSTALL NO. 2 TRANSMISSION BREATHER ASSEMBLY 
    1. Coat a new O-ring with Toyota Genuine ATF WS.
    2. GTY820615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the O-ring to the No. 2 transmission breather assembly.

    3. GTY820246Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the No. 2 transmission breather assembly with the bolt and connect the 4 clamps.

      Torque: 7.0 N.m (71 kgf/cm, 62 in.lbf) 

  14. INSTALL TRANSMISSION OIL PUMP INSULATOR 
    1. GTY809751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the transmission oil pump insulator with the 3 bolts.

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

  15. CONNECT WIRE HARNESS 
    1. Connect the wire harness to the hybrid vehicle transmission assembly with the 6 bolts and connect the 5 wire harness clamps.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      GTY799346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Wire Harness Connector Bolt
    2. Connect the 6 wire harness connectors.
  16. INSTALL MOTOR CABLE 

    See step  1

  17. INSTALL GENERATOR CABLE 

    See step  1

  18. INSTALL EXHAUST MANIFOLD ASSEMBLY RH 

    Refer to PROCEDURE - Step 7

  19. INSTALL EXHAUST MANIFOLD ASSEMBLY LH 

    Refer to PROCEDURE - Step 9

  20. INSTALL NO. 1 EGR PIPE 

    Refer to PROCEDURE - Step 5

  21. INSTALL NO. 1 EXHAUST PIPE SUPPORT BRACKET SUB-ASSEMBLY 
    1. GTY809762Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Install the No. 1 exhaust pipe support bracket sub-assembly with the 2 bolts.

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

  22. INSTALL ENGINE ASSEMBLY WITH HYBRID VEHICLE TRANSMISSION 

    Refer to INSTALLATION [10/2017 - 09/2018]

  23. PERFORM INITIALIZATION 

    Refer to INITIALIZATION [10/2017 - 09/2018]

  24. PERFORM RESOLVER INITIALIZATION 

    Refer to UTILITY [10/2017 - ]

  25. PERFORM RESET MEMORY 

    If the hybrid vehicle transmission assembly is replaced, initialize the learning value of the transmission.

    Refer to INITIALIZATION [10/2017 - 10/2023]

  26. CHECK VEHICLE HEIGHT CONTROL (w/ Air Suspension) 

    Refer to PROCEDURE - Step 9

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