2003 Lexus GS 300FACTORY OEM SERVICE PROCEDURE

Sliding Roof System: Inspection

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT ROOF CONSOLE BOX ASSYΒ 
    1. Inspect the slide roof motor switch continuity.
      Fig 1: Identifying Slide Roof Motor Switch Connector Terminals
      G00903646Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002

      Standard:Β 

      Fig 2: Terminals Specified Condition Table
      G00903647Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002

      If continuity is not as specified, replace the roof console box.

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When to See a Mechanic

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

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