2004 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Steering Column ASSY: Overhaul

NOTE:
  • If the airbag connector is disconnected with the ignition switch in the ON position, DTCs will be recorded.
  • When using a vise, do not overtighten it.
  • Coat parts indicated by arrows with molybdenum disulfide lithium base grease (see COMPONENTS ).

HINT:

  • A bolt without a torque specification is shown in the standard bolt chart (see STANDARD BOLT ).
  1. PRECAUTION (SEE  AIR BAG SAFETY PRECAUTIONS  ) 
  2. DISCONNECT BATTERY NEGATIVE TERMINAL (SEE  AIR BAG SAFETY PRECAUTIONS  ) 
  3. PLACE FRONT WHEELS FACING STRAIGHT AHEAD 
  4. REMOVE SWITCH & VOLUME CASE 
  5. REMOVE STEERING WHEEL COVER LOWER NO.2 
  6. REMOVE HORN BUTTON ASSY 
    1. Using a Torx socket wrench (T30), loosen the 2 Torx screws until the groove along the screw circumference is caught on the screw case.
      Fig 1: Removing Horn Button Assy
      G01052209Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Pull out the horn button assy from the steering wheel and disconnect the airbag connectors.
    3. Disconnect the terminal.
      NOTE: When removing the horn button assy, take care not to pull the airbag wire harness.
Factory Service Tools

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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.