HEADLIGHT ECU REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during headlight ECU removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Front bumper assembly Front television camera view adjustment Panoramic view monitor system

Click here for Initialization

Click here for Calibration
Front bumper assembly (w/ Intelligent clearance sonar system)

  • Ultrasonic sensor detection angle

  • Ultrasonic sensor detection angle registration

  • Intelligent clearance sonar system

  • LEXUS parking assist-sensor system

Click here

Headlight ECU sub-assembly LH

  • Synchronize vehicle information

  • Initialize headlight ECU sub-assembly LH

  • Adaptive high beam system

  • Automatic headlight beam level control system

Click here

Note

If the Headlight ECU sub-assembly RH is replaced with a new one, vehicle information registration and initialization are not necessary.

Tech Tips


  • Use the same procedure for the RH side and LH side.

  • The following procedure is for the LH side.

PROCEDURE


  1. REMOVE HEADLIGHT ASSEMBLY

    for Single Beam Headlight:

    Click here

    for Triple Beam Headlight:

    Click here

  2. REMOVE HEADLIGHT ECU SUB-ASSEMBLY

    Note

    Make sure to replace the headlight gasket with a new one. Failure to do so may cause water ingress.


    1. B005ON0

      Remove the 3 screws.

    2. B005P9A

      Remove the connector cover.

    3. B005NN9

      for Single Beam Headlight:


      1. Disconnect the connector to remove the headlight ECU sub-assembly.

        Note

        If the headlight ECU sub-assembly has been struck or dropped, replace it with a new one.

    4. B005MII

      for Triple Beam Headlight:


      1. Disconnect the 2 connectors to remove the headlight ECU sub-assembly.

        Note

        If the headlight ECU sub-assembly has been struck or dropped, replace it with a new one.

  3. REMOVE HEADLIGHT GASKET

    Note

    Make sure to replace the headlight gasket with a new one. Failure to do so may cause water ingress.


    1. B005O3D

      Remove the headlight gasket.