2003 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Cruise Control Main Switch ASSY: Replacement

WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

COMPONENTS: See COMPONENTS 

  1. PRECAUTION 
  2. SEPARATE BATTERY NEGATIVE TERMINAL (See  AIR BAG RESTRAINT SYSTEMS  ) 
  3. REMOVE STEERING WHEEL COVER LOWER NO.2 (See  STEERING COLUMN ASSY  ) 
  4. REMOVE SWITCH & VOLUME CASE (See  STEERING PAD SWITCH MODULATOR  ) 
  5. REMOVE STEERING PAD SWITCH MODULATOR (See  STEERING PAD SWITCH MODULATOR  ) 
  6. REMOVE HORN BUTTON ASSY (See  AIR BAG RESTRAINT SYSTEMS  ) 
  7. REMOVE STEERING WHEEL ASSY (See  STEERING COLUMN ASSY  ) 

    SST 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05021)

  8. REMOVE CRUISE CONTROL MAIN SWITCH ASSY 
    1. Remove the 3 screws.
      Fig 1: Removing Cruise Control Main Switch Assy Screws (1 Of 2)
      G00925428Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Reverse the steering wheel and remove the 3 screws.
    3. Remove the steering wheel boss cover lower and cruise control main switch assy.
      Fig 2: Removing Cruise Control Main Switch Assy Screws (2 Of 2)
      G00925429Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. INSPECT STEERING WHEEL CENTER POINT 
  10. INSTALL STEERING WHEEL ASSY (See  STEERING COLUMN ASSY  ) 
  11. INSPECT HORN BUTTON ASSY (See  AIR BAG RESTRAINT SYSTEMS  ) 
  12. INSTALL HORN BUTTON ASSY (See  AIR BAG RESTRAINT SYSTEMS  ) 
  13. INSPECT SRS WARNING LIGHT 
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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.