2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Steering Column Assembly: Removal

NOTE:
  • If the airbag connector is disconnected with the ignition switch ON, DTCs will be recorded.
  • When using a vise, do not overtighten it.
  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
  2. FRONT WHEELS FACING STRAIGHT AHEAD 
  3. REMOVE SWITCH AND VOLUME CASE 
    1. Apply protective tape to the steering wheel boss cover lower as shown in the illustration.
    2. Using a screwdriver, detach the 3 claws and remove the case.

      HINT:

      Tape the screwdriver tip before use.

      Fig 1: Identifying Protective Tape To Steering Wheel Boss Cover
      G05291664Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. REMOVE STEERING PAD SWITCH MODULATOR 
    1. Remove the 2 screws.
    2. Remove the modulator and then disconnect the connector.
      Fig 2: Identifying Steering Pad Switch Modulator Screws
      G05291665Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE NO. 2 STEERING WHEEL COVER LOWER 
    1. Using a screwdriver, remove the cover.
  6. REMOVE STEERING WHEEL PAD ASSEMBLY 
    NOTE: If the airbag connector is disconnected with the ignition switch at ON or ACC, DTCs will be recorded.
    1. Using a T30 "TORX" socket wrench, loosen the 2 "TORX" screws until the groove along the screw circumference is caught on the screw case.
      Fig 3: Identifying Steering Wheel Pad Assembly TORX Screw And Screw Case
      G05291666Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Pull the steering wheel pad from the steering wheel and disconnect the airbag connectors.
    3. Disconnect the terminal.
      NOTE: When removing the steering wheel pad, take care not to pull the airbag wire harness.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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