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Home >> Lexus >> 2018 >> LS 500 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Lighting System (Ext) - Service Information >> Headlight Assembly >> Installation [12/2017 - 10/2020] >> Procedure

Installation [12/2017 - 10/2020]: Procedure

  1. INSTALL HEADLIGHT ASSEMBLY LH 
    1. Set the headlight assembly LH to the vehicle.
      GTY797527Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Set to the Vehicle
      Place Hands Here
    2. Place your hand on 2 brackets of the headlight assembly LH to set them on the screw seats.
      NOTE:

      Be careful not to break the bracket.

    3. Install the 3 screws and 2 bolts.

      for Bolt 

      Torque: 7.5 N.m (76 kgf/cm, 66 in.lbf) 

      GTY811595Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the connector and lock the connector lock lever.
      GTY829312Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A w/ Front Side Radar
    5. w/ Front Side Radar:

      Connect the connector and attach the wire harness clamp.

  2. INSTALL FRONT FENDER REINFORCEMENT SUB-ASSEMBLY TOP LH 
    1. Set the front fender reinforcement sub-assembly top LH and attach the clip.
      GTY811270Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Headlight Assembly LH Clip Installation Area
      NOTE:

      When attaching the headlight assembly LH to the clips, do not damage the clip installation area.

    2. Lower the rear end of the front fender reinforcement sub-assembly top LH and attach the hook toward the outside of the vehicle.
      GTY793283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Lower Attach the hook
    3. Attach the claw of the hood to cowl top seal.
      GTY811946Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Lower the end of the front fender reinforcement sub-assembly top LH and attach the hook toward the outside of the vehicle.
      GTY775808Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Lower Attach the hook
  3. INSTALL FRONT BUMPER ASSEMBLY 

    except Sport Package:

    Refer to INSTALLATION [12/2017 - 10/2020]

    for Sport Package:

    Refer to INSTALLATION [12/2017 - 10/2020]

  4. PERFORM REGISTRATION (When Replacing The Headlight Assembly LH or Headlight ECU Sub-assembly LH) 
    NOTE:
    • If any of the work in the table below has been performed, vehicle information registration of the headlight ECU sub-assembly LH is necessary.

      Refer to REGISTRATION [12/2017 - 10/2020]

      Performed Work or System Condition Necessary Procedures
      Replacement of the headlight ECU sub-assembly LH Vehicle information registration for the headlight ECU sub-assembly LH
      Replacement of the headlight assembly LH
    • If the steering sensor zero point calibration is not performed, the cornering lights may not operate correctly.
    • A new headlight ECU sub-assembly LH cannot operate until the vehicle information is synchronized.
    • After replacing the headlight ECU sub-assembly LH, it is necessary to synchronize the vehicle information and performing initialization.
    • Even if the headlight ECU sub-assembly RH is replaced with a new one, synchronizing the vehicle information and performing initialization are not necessary.
    • Adjust the headlight aim after initializing the headlight ECU sub-assembly LH.
    • When a malfunction is detected in the automatic headlight beam level control system, rear height control sensor sub-assembly LH signal initialization is impossible. Perform troubleshooting before initialization.
  5. PERFORM SYSTEM CALIBRATION 

    Refer to INITIALIZATION [12/2017 - 09/2018] , or refer to INITIALIZATION [09/2018 - 10/2020]

  6. ADJUST HEADLIGHT AIMING 

    Refer to ADJUSTMENT [12/2017 - 10/2020] 

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