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Home >> Lexus >> 2021 >> LC 500 2D Coupe >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Service Information (Coupe) (2 Of 2) >> Pop Up Hood Sensor >> Installation [03/2017 - 05/2023] >> Procedure

Installation [03/2017 - 05/2023]: Procedure

  1. INSTALL FRONT BUMPER ENERGY ABSORBER 
    1. Install the pedestrian detection chamber assembly to the front bumper energy absorber.
      NOTE:
      • Securely install the pedestrian detection chamber to the front bumper energy absorber fittings.
      • When connecting the pedestrian detection chamber assembly connector, push it straight in so as not to twist it.
      • Check that the chamber alignment mark is within the anchor range.
      GTY797743Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 10 mm (0.394 in.) *b Alignment Mark
      *c Anchor Range - -
    2. Attach the guides to install the front bumper energy absorber to No. 2 front bumper mounting bracket.
      NOTE:

      When install the pedestrian detection chamber, take care not to damage the front bumper energy absorber.

    3. Install the 4 new clips.
      GTY794335Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL PEDESTRIAN DETECTION CHAMBER ASSEMBLY 
    1. Check that there is no blockage in the breathing filter due to foreign matter.
    2. Install the pedestrian detection chamber sensor assembly to the No. 2 front bumper mounting bracket with a new bolt and new nut so that the breathing filter points downward.

      Torque: 3.5 N.m (36 kgf/cm, 31 in.lbf) 

      NOTE:
      • Do not reuse the pedestrian detection chamber assembly if subjected to any strong impact (such as dropping) during operation.
      • Do not reuse the tightening bolt or nut of the pedestrian protection sensor.
      • Hold the pedestrian protection sensor so as not to damage the No. 2 front bumper mounting bracket.
      • When connecting the pedestrian detection chamber assembly connector, push it straight in so as not to twist it.
      • When connecting any pedestrian detection chamber connector, take care not to damage the airbag wire harness.
      • Do not open/close or move the tightening clips of the pedestrian detection chamber and pedestrian protection sensor.

      HINT: 

      Use the same procedure for the other side.

      GTY781818Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Pedestrian Protection Sensor
      *a Breathing Filter
      Bolt
      Nut
    3. Check that there is no looseness in the installation parts of the pedestrian detection chamber assembly.
  3. INSTALL NO. 2 FRONT BUMPER MOUNTING BRACKET 

    Refer to PROCEDURE - Step 8 [03/2017 - 06/2019] , or refer to PROCEDURE - Step 8 [06/2019 - 05/2023]

  4. INSTALL FRONT BUMPER ASSEMBLY 

    Refer to INSTALLATION [03/2017 - 05/2023]

  5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 

    Refer to PROCEDURE - Step 2

    NOTE:

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

    Refer to INITIALIZATION [03/2017 - 04/2020] , or refer to INITIALIZATION [04/2020 - 05/2023]

  6. INSTALL NO. 2 DECK BOARD 

    Refer to PROCEDURE - Step 13 [03/2017 - 01/2021] , or refer to PROCEDURE - Step 13 [01/2021 - ]

  7. PERFORM DIAGNOSTIC SYSTEM CHECK 

    Refer to DTC CHECK / CLEAR [03/2017 - 04/2020] , or refer to DTC CHECK / CLEAR [04/2020 - ]

  8. CHECK SRS WARNING LIGHT 

    Refer to OPERATION CHECK [03/2017 - 04/2020] , or refer to OPERATION CHECK [04/2020 - ]

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