2007 Lexus GS 350 AWDFACTORY OEM SERVICE PROCEDURE

Power Window Control System: Initialization

  1. RESET (INITIALIZE) POWER WINDOW REGULATOR MOTOR 
    NOTE: Resetting the power window regulator motor (initializing the pulse sensor) is necessary if: 1) the battery terminal cable is disconnected; 2) the power window regulator master switch, wire harness, power window regulator switch, window regulator, and power window regulator motor are replaced or removed/installed; 3) the DC CUT or MPX-B fuses are replaced. If resetting is not performed, the master switch will not be able to operate the AUTO operation function, jam protection and remote UP/ DOWN function.
    1. Turn the engine switch on (IG).
    2. Open the power window halfway by pressing the power window switch.
    3. Fully pull the switch up until the power window is fully closed and continue to hold the switch for at least 1 second.
    4. Check that the AUTO UP/DOWN function operates normally.

      HINT:

      If the AUTO UP/DOWN function operates normally, reset operations are completed. If abnormal, perform the following 3 steps.

    5. Disconnect the cable from the negative (-) battery terminal for 10 seconds or more.
    6. Reconnect the cable.
    7. Perform initialization from the first 4 steps again.

    HINT:

    If a condition where an initialization is necessary occurs (see 1), 2) and 3) above), the initialization procedures above are performed, but the remote UP/DOWN function does not operate, the power window regulator master switch may have a malfunction.

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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.