2002 Lexus GS 430FACTORY OEM SERVICE PROCEDURE

Additional Sub-Key Registration

NOTE:
  • It is possible to register up to 3 sub-key codes including the already registered key code.
  • When any operation time described below is over, registration mode completes.
  • When the next procedure is started while the timer is working, the timer completes counting time, then the next timer starts.

There are 2 ways for registration of an additional sub-key, one way is depressing the brake pedal and acceleration and the other way is using the hand-held tester. When using the brake and accelerator pedal for additional sub-key registration, refer to flowchart. See Fig 1. When using the hand-held tester for additional sub-key registration, refer to flowchart. See Fig 2.

Fig 1: Registering Key Number With Brake & Accelerator Pedal
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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:

  • 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.