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Home >> Lexus >> 2021 >> LS 500 Base, AWD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Dynamic Rear Steering System - Service Information >> Dynamic Rear Steering Actuator >> Installation [12/2017 - 10/2020] >> Procedure

Installation [12/2017 - 10/2020]: Procedure

  1. INSTALL REAR STEERING LINK ASSEMBLY 
    1. Align the 2 guide pins with the rear suspension member sub-assembly and install the rear steering link assembly with the 4 bolts.
      GTY778556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Torque Wrench Fulcrum Length

      Bolt A 

      Torque: 97 N.m (989 kgf/cm, 72 ft.lbf) 

      HINT: 

      Temporarily tighten the bolt B.

    2. Using a ball joint lock nut wrench, fully tighten the bolt B.

      Specified tightening torque 

      Torque: 97 N.m (989 kgf/cm, 72 ft.lbf) 

      HINT: 

      • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.

        Refer to PRECAUTION [12/2017 - 10/2020]

      • When using a ball joint lock nut wrench (fulcrum length of 150 mm (5.906 in.)) + torque wrench (fulcrum length of 255 mm (10.039 in.)): 61.1 N.m (623 kgf/cm, 45 ft.lbf)
    3. Engage the wire harness clamp and install the grommet.
    4. Install the nut.

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

    5. Connect the 2 connectors to the rear steering control ECU.

      HINT: 

      When connecting the connector with lock lever, return the lock lever to its original position and securely push in the lock of the lock lever as shown in the illustration.

      GTY786088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lock of the Lock Lever
      *b Lock Lever
    6. Engage the clamp.
  2. INSTALL EXHAUST TAILPIPE ASSEMBLY 

    Refer to INSTALLATION [12/2017 - ]

  3. CONNECT REAR STEERING TIE ROD ASSEMBLY LH 
    1. Install the rear steering tie rod assembly LH to the rear axle carrier sub-assembly with a new nut.

      Torque: 118 N.m (1203 kgf/cm, 87 ft.lbf) 

    2. Connect the skid control sensor wire LH to the rear steering tie rod assembly LH with the bolt.

      Torque: 8.5 N.m (87 kgf/cm, 75 in.lbf) 

  4. CONNECT REAR STEERING TIE ROD ASSEMBLY RH 

    HINT: 

    Perform the same procedure as for the LH side.

  5. INSTALL REAR WHEELS 

    Refer to INSTALLATION [12/2017 - 10/2023]

  6. INSTALL NO. 1 FLOOR UNDER COVER 

    Refer to PROCEDURE - Step 6

  7. INSTALL BATTERY CARRIER CATCH BRACKET SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 5

  8. INSTALL LOWER INNER LUGGAGE COMPARTMENT TRIM COVER 

    Refer to PROCEDURE - Step 7

  9. INSTALL LUGGAGE COMPARTMENT FLOOR MAT 

    Refer to PROCEDURE - Step 12

  10. INSTALL TOOL BOX 

    Refer to PROCEDURE - Step 8

  11. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 

    Refer to PROCEDURE - Step 2

    NOTE:

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

    Refer to INITIALIZATION [12/2017 - 09/2018] , or refer to INITIALIZATION [09/2018 - 10/2020]

  12. INSTALL LUGGAGE COMPARTMENT MAT SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 11

  13. INSPECT AND ADJUST REAR WHEEL ALIGNMENT 

    Refer to ADJUSTMENT [12/2017 - 09/2018] , or refer to ADJUSTMENT [09/2018 - 10/2020]

  14. PERFORM DYNAMIC REAR STEERING SYSTEM CALIBRATION 

    Refer to CALIBRATION [12/2017 - 10/2023]

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