Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2007 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Power Window Control System: Initialization

HOW TO RESET POWER WINDOW MOTOR (LIMIT SWITCH)
HINT:
- It is necessary to reset the power window motor (in initial position for the limit switch) after separating the window regulator from the power window motor or after operating the window regulator with the door glass not installed.
- Reset the power window regulator motor after adjustment of the door glass is finished.
1. Install the power window regulator and door glass.
2. Connect the power window switch to the wire harness and turn the ignition switch ON.
3. Fully close the door glass by manual operation.
4. Using a round bar (ø 2 mm (0.08 in.)), keep the reset switch pressed.
5. Fully open the door glass by manual operation with the reset switch pressed.
6. Take the round bar away from the reset switch and then fully close the door glass by manual operation.
  
  Fig 1: Identifying Power Window Motor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Check if AUTO UP → AUTO DOWN operates in the automatic operation.
  HINT:
  - Note that the jam protection function does not operate just after the reset has completed.
  - Reset the regulator again when performing the reverse operation after closing the window fully using the AUTO UP operation.
8. Check the power window functions.

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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