LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> GS 450h >> Repair and Diagnosis >> Steering >> Steering Column >> Steering Column >> Steering Column Assembly >> Installation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Steering Column Assembly: Installation

  1. HANDLING PRECAUTIONS FOR STEERING ACTUATOR ASSEMBLY 
    • Be careful that the No. 2 seal lip or boot does not turn outward while carrying or installing the steering actuator assembly. If installing a new steering actuator assembly, make sure that the spiral center lock pin is securely inserted.
    • Do not use the steering actuator assembly if it has been dropped.
      Fig 1: Sectional View Of Steering Actuator Assembly
      G05816680Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CONNECT NO. 2 STEERING INTERMEDIATE SHAFT ASSEMBLY 
    1. Make sure that the power steering link assembly is centered.
    2. Install the steering actuator assembly.
      1. If installing a new steering actuator assembly : Install the steering actuator assembly with the white paint on the upper surface of the spiral case facing down.
        NOTE: Do not pull out the center lock pin.
        Fig 2: Identifying Steering Actuator Assembly With White Paint On Upper Surface Of Spiral Case Facing Down
        G05816681Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. If reinstalling the removed steering actuator assembly:
        1. Slowly turn the spiral case clockwise until it locks.
        2. Turn the spiral case two turns counterclockwise from the lock position.
        3. Align the slit of the sliding yoke with the alignment mark (↑).
        4. Install the steering actuator assembly with the white paint on the upper surface of the spiral case facing down.
        5. Align the matchmarks on the steering actuator assembly and the column hole shield.
          NOTE: Do not turn the actuator body and the spiral case.
          Fig 3: Aligning Matchmarks On Steering Actuator Assembly And Column Hole Shield
          G05816682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the clamp to the steering column hole shield.
      Fig 4: Locating Steering Column Clamp
      G05816683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL STEERING COLUMN ASSEMBLY 
    1. Install the steering column with the 4 nuts.

      Torque: 26 N*m (260 kgf*cm, 19 ft.*lbf) 

    2. Connect the connectors and wire harness clamps to the steering column.
      Fig 5: Locating Steering Column Nuts
      G05816684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. CONNECT STEERING ACTUATOR ASSEMBLY 
    1. Align the matchmarks on the steering actuator assembly and the main shaft.
    2. Install the bolt.

      Torque: 35 N*m (360 kgf*cm, 26 ft.*lbf) 

      Fig 6: Aligning Matchmarks On Steering Actuator Assembly And Main Shaft
      G05816685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL STEERING SLIDING YOKE SUB-ASSEMBLY 
    NOTE: Make sure that the steering link is centered performing this step.
    1. Align the matchmarks on the steering actuator and steering sliding yoke.
    2. Temporarily install the bolt.

      HINT:

      Do not tighten the bolt.

      Fig 7: Aligning Matchmarks On Steering Actuator And Steering Sliding Yoke
      G05816686Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Align the matchmarks on the steering sliding yoke and the power steering link.
      Fig 8: Aligning Matchmarks On Steering Sliding Yoke And Power Steering Link
      G05816687Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Install bolt (A) and tighten the 2 bolts.

      Torque: 35 N*m (360 kgf*cm, 26 ft.*lbf) 

      Fig 9: Locating Steering Link Bolts
      G05816688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL MAIN SHAFT LOWER DUST COVER 
    1. Connect the connector and wire harness clamp to the steering actuator assembly.

      HINT:

      If a new steering actuator assembly was installed, pull out the center lock pin and tighten the clamp of the actuator after this step.

      Fig 10: Connecting Wire Harness Clamp To Steering Actuator Assembly
      G05816689Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the main shaft lower dust cover with the 2 bolts.

      Torque: 7.5 N*m (77 kgf*cm, 66 in.*lbf) 

      Fig 11: Locating Main Shaft Lower Dust Cover Bolts
      G05816690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. PLACE FRONT WHEELS FACING STRAIGHT AHEAD 
  8. INSTALL TURN SIGNAL SWITCH ASSEMBLY WITH SPIRAL CABLE SUB-ASSEMBLY 
    1. Install the turn signal switch with spiral cable to the steering column with the clamp.
      Fig 12: Locating Turn Signal Switch Clamp
      G05816691Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. INSTALL TILT AND TELESCOPIC SWITCH 
    1. Attach the claw to install the tilt and telescopic switch.
    2. Connect the connector.
      Fig 13: Identifying Tilt And Telescopic Switch Claw
      G05816692Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSTALL STEERING COLUMN COVER 
    1. Attach the 4 clips to install the steering column cover upper onto the instrument panel cluster finish panel.
    2. Attach the claw to install the steering column cover upper.
      Fig 14: Identifying Steering Column Cover Upper Clips
      G05816693Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Attach the 2 claws to install the steering column cover lower.
      NOTE: Do not damage the tilt and telescopic switch.
    4. Using a screwdriver, install the 3 screws.

      Torque: 2.0 N*m (20 kgf*cm, 18 in.*lbf) 

      Fig 15: Identifying Steering Column Cover Lower Screws And Claws
      G05816694Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. ADJUST SPIRAL CABLE SUB-ASSEMBLY  (See INSTALLATION )
  12. INSTALL STEERING WHEEL ASSEMBLY 
    1. Align the matchmarks on the steering wheel and steering main shaft.
    2. Install the steering wheel set nut.

      Torque: 50 N*m (510 kgf*cm, 37 ft.*lbf) 

  13. INSPECT STEERING WHEEL CENTER POINT 
  14. INSTALL NO. 1 AIR DUCT 
    1. Attach the 2 claws to install the No. 1 air duct.
  15. INSTALL DRIVER SIDE KNEE AIRBAG ASSEMBLY  (See INSTALLATION )
  16. INSTALL INSTRUMENT PANEL NO. 1 SAFETY PAD SUB-ASSEMBLY  (See INSTALLATION )
  17. INSTALL INSTRUMENT PANEL NO. 1 UNDER COVER SUB-ASSEMBLY  (See INSTALLATION )
  18. INSTALL INSTRUMENT SIDE PANEL LH  (See INSTALLATION )
  19. INSTALL FRONT DOOR OPENING TRIM COVER LH  (See INSTALLATION )
  20. INSTALL FRONT DOOR SCUFF PLATE LH  (See INSTALLATION )
  21. INSTALL INSTRUMENT PANEL FINISH PANEL END LH  (See INSTALLATION )
  22. INSTALL CONSOLE UPPER PANEL SUB-ASSEMBLY  (See INSTALLATION )
  23. INSTALL FRONT CONSOLE UPPER PANEL GARNISH  (See INSTALLATION )
  24. INSTALL STEERING PAD  (See INSTALLATION )
  25. INSTALL NO. 3 STEERING WHEEL COVER LOWER 
  26. INSTALL NO. 2 STEERING WHEEL COVER LOWER 
  27. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
  28. INSPECT STEERING PAD  (See INSTALLATION )
  29. INSPECT SRS WARNING LIGHT 
    1. Inspect the SRS warning light (see DIAGNOSIS SYSTEM ).
  30. PERFORM VARIABLE GEAR RATIO STEERING SYSTEM CALIBRATION 
    1. Perform variable gear ratio steering system calibration (see INITIALIZATION  ).
scientia non olet · About LEMON Manuals