LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2021 >> LS 500 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Service Information >> Ignition Coil And Spark Plug >> Installation [12/2017 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation [12/2017 - ]: Procedure

  1. INSTALL SPARK PLUG 

    Refer to PROCEDURE - Step 1

  2. INSTALL IGNITION COIL ASSEMBLY 

    HINT: 

    Perform "Inspection After Repair" after replacing an ignition coil assembly and spark plug.

    Refer to INITIALIZATION [12/2017 - 10/2020] , or refer to INITIALIZATION [10/2020 - 10/2023] , or refer to INITIALIZATION [10/2023 - ]

    1. for Bank 2:
      1. Install the 3 ignition coil assemblies with the 3 bolts.

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

        NOTE:

        If a ignition coil assembly has been struck or dropped, replace it.

      2. Connect the 3 ignition coil assembly connectors.
      3. Install the No. 2 intercooler support bracket.

        Refer to PROCEDURE - Step 2 [12/2017 - 10/2020] , or refer to PROCEDURE - Step 2 [10/2020 - ]

      4. Install the bolt.

        Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      5. Attach the 3 wire harness clamps.
      6. Install the bolt.

        Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

    2. for Bank 1:
      1. Install the 3 ignition coil assemblies with the 3 bolts.

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

        NOTE:

        If a ignition coil assembly has been struck or dropped, replace it.

      2. Connect the 3 ignition coil assembly connectors.
      3. Install the intercooler support bracket.

        Refer to PROCEDURE - Step 3 [12/2017 - 10/2020] , or refer to PROCEDURE - Step 3 [10/2020 - ]

      4. Install the bolt.

        Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      5. Attach the 3 wire harness clamps.
      6. Install the bolt.

        Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

  3. INSTALL LOWER RADIATOR AIR DEFLECTOR 

    Refer to PROCEDURE - Step 189 [12/2017 - 09/2018] , or refer to PROCEDURE - Step 189 [09/2018 - 10/2020] , or refer to PROCEDURE - Step 190 [10/2020 - 10/2023] , or refer to PROCEDURE - Step 189 [10/2023 - ]

  4. INSTALL UPPER RADIATOR SUPPORT SEAL 

    Refer to PROCEDURE - Step 190 [12/2017 - 09/2018] , or refer to PROCEDURE - Step 190 [09/2018 - 10/2020] , or refer to PROCEDURE - Step 191 [10/2020 - 10/2023] , or refer to PROCEDURE - Step 190 [10/2023 - ]

  5. INSTALL RADIATOR COVER PLATE 

    Refer to PROCEDURE - Step 191 [12/2017 - 09/2018] , or refer to PROCEDURE - Step 191 [09/2018 - 10/2020] , or refer to PROCEDURE - Step 192 [10/2020 - 10/2023] , or refer to PROCEDURE - Step 191 [10/2023 - ]

  6. INSTALL V-BANK COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 192 [12/2017 - 09/2018] , or refer to PROCEDURE - Step 192 [09/2018 - 10/2020] , or refer to PROCEDURE - Step 193 [10/2020 - 10/2023] , or refer to PROCEDURE - Step 192 [10/2023 - ]