2001 Lexus GS 430FACTORY OEM SERVICE PROCEDURE

Registration Of Recognition Code

  1. To begin programming, remove key from ignition switch. Ensure driver's door is open and unlocked, and all other doors are closed. Insert key into ignition switch, and then remove it. Go to next step.
  2. Complete the following in 40 seconds or less: press door lock switch to LOCK position, and then within one second, press door lock switch to UNLOCK position. Repeat procedure continuously until door locks have been locked and unlocked 5 times. Close, and then open driver's door. Go to next step.
  3. Complete the following in 40 seconds or less: repeat procedure in step  2, except for closing and opening driver's door. Insert key into ignition switch. To enter desired mode, turn ignition switch to ON position and back to LOCK position (one cycle), within one second, the specified number of times. See REGISTRATION MODE SELECTION  table. Remove key from ignition switch. Go to next step.
    REGISTRATION MODE SELECTION

    Registration Mode No. Of Ignition Switch Cycles
    Add 1
    Rewrite 2
    Confirmation 3
    Prohibition 5
  4. If any mode other than confirmation mode is selected, go to next step. If confirmation mode was selected, door locks will cycle 0-4 times depending on how many transmitter codes are stored in ECU. Example: two stored codes equals 2 door lock/unlock cycles. Registration of confirmation code is complete after door locks cycle.
  5. Complete the following in 40 seconds or less: if add mode, rewrite mode or prohibition mode is selected, to confirm proper initiation, door locks will automatically cycle one time for add mode, 2 times for rewrite mode and 5 times for prohibition mode. Press transmitter LOCK and UNLOCK buttons simultaneously for at least 1.5 seconds, and then within 3 seconds, press any transmitter button for at least one second. Go to next step.
  6. If within 3 seconds, door locks cycle one time, new transmitter code has been successfully accepted. Go to next step. If door locks cycle 2 times, new transmitter code was not accepted. To program an additional transmitter or to make a second attempt, return to step  5 within 20 seconds.
  7. Registration of recognition codes is complete under any of the following conditions:
    • Fifteen seconds has elapsed since wireless door lock ECU has responded.
    • Driver's door is closed.
    • Key is inserted into ignition key cylinder.
    • Four recognition codes are registered at one time.
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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