2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE) 
    1. Enter the Navigation Check mode's Vehicle Sensors check (see NAVIGATION CHECK MODE  ).
      Fig 1: Display Navigation Check Mode (Vehicle Sensors) Screen
      G05293287Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the gyro voltage.

      Standard voltage: 

      0.1 to 4.5 V 

    NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN DIAGNOSTIC TROUBLE CODE CHART 

    OK: REPLACE NAVIGATION ECU 

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.

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