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 the during headlight ECU sub-assembly 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
Disconnect cable from negative auxiliary battery terminal Memorize steering angle neutral point Lane departure alert system (w/ Steering Control)

Click here

Simple intelligent parking assist system*1
Toyota parking assist-sensor system*1
Pre-collision system
Initialize back door lock Power door lock control system

Click here

Headlight ECU sub-assembly LH

  • Synchronize vehicle information

  • Initialize headlight ECU sub-assembly LH

 Automatic headlight beam level control system

Click here

*1: When performing learning using the GTS.

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

    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. A001S4T

      Remove the 3 screws.

    2. A001PJK

      Separate the connector cover from the headlight ECU sub-assembly.

    3. A001NW4

      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.

  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. A001NQC

      Remove the headlight gasket.