2004 Lexus GS 430FACTORY OEM SERVICE PROCEDURE

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WARNING: This page is about a different car, the 2005 Lexus GS 430 and 2005 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Only specific window does not operate (Neither manual nor automatic operation is available). 
    Fig 1: Only Specific Window Does Not Operate Flow Chart
    G02940462Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. REMOTE CONTROL OF ALL WINDOWS (EXCEPT DRIVER'S) DOES NOT FUNCTION WITH MASTER SWITCH. (WINDOWS OPERATE NORMALLY WITH EACH OF MASTER SWITCHES. 
    Fig 2: Trouble Shooting Table (Remote Control Of All Windows)
    G02940463Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. THE KEY RELATED POWER WINDOW OPERATION DOES NOT OPERATE WITH DRIVER Side Door KEY CYLINDER. (MASTER SWITCH OPERATION IS NORMAL.) 
    Fig 3: Trouble Shooting Table Key Related Power Windows Operation
    G02940464Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. POWER WINDOW DOES NOT OPERATE WITH MULTI-FUNCTION TRANSMITTER. (WINDOWS OPERATE NORMALLY WITH MASTER SWITCH.) 
    Fig 4: Trouble Shooting Table Power Window Does Not Operate With Multi-Function Thermistor
    G02940465Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. WINDOW MOVES DOWN WITHOUT BEING ORDERED DURING THE UP OPERATION 
    Fig 5: Trouble Shooting Table (Window Moves Down Without Being Ordered During Up Operation)
    G02940466Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.