2003 Lexus GS 300FACTORY OEM SERVICE PROCEDURE

For Vehicles Equipped With Vehicle Skid Control (VSC) System

NOTE: When using a 2-wheel drum tester such as a speedometer tester or chassis dynamometer, etc., or jacking up the rear wheels and driving the wheels, always push in the TRAC & VSC cut switch and turn the TRAC & VSC system OFF.
  1. Press the VSC OFF switch.
  2. Check that the VSC OFF indicator light comes ON.

    HINT:

    The VSC OFF indicator light should be always OFF when the engine is restarted.

    Fig 1: Identifying TRAC & VSC Dash Indicator Lights
    G03470881Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
  3. Begin measurements.
    Fig 2: Vehicle Placed On Chassis Dynometer
    G03470882Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
  4. Press the VSC OFF switch again to change the TRAC & VSC system to operational condition and check that the VSC OFF indicator light goes off.

    HINT:

    The SLIP indicator light blinks when the TRAC system is operational.

    Fig 3: Identifying TRAC & VSC Dash Indicator Lights
    G03470883Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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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.

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