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Home >> Lexus >> 2023 >> RX 350h Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Service Information >> ECM >> Installation [08/2023 - ] >> Procedure
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Installation [08/2023 - ]: Procedure

  1. INSTALL NO. 2 ECM BRACKET 

    Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf) 

  2. INSTALL NO. 1 ECM BRACKET 

    Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf) 

  3. INSTALL ECM 
    1. GTY1132607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Install the ECM with the bolt and 2 nuts.

        Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

        NOTE:

        If the ECM has been struck or dropped, replace it.

      2. Engage the clamp and install the engine wire with the bolt.

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

      3. Connect the 2 ECM connectors and rotate the 2 levers to lock them.
        NOTE:
        • When connecting the ECM connectors, make sure that the connecting parts of the ECM connectors are free of dirt, water and other foreign matter.
        • Be sure to securely connect the ECM connectors.
  4. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL 

    Refer to PROCEDURE - Step 5

  5. INSTALL BATTERY SERVICE COVER PLATE 
  6. VEHICLE IDENTIFICATION NUMBER (VIN) REGISTRATION 

    Refer to PROCEDURE - Step 1

  7. ECU CONFIGURATION 

    Refer to ECU CONFIGURATION [10/2022 - ]

  8. UPDATE ECU SECURITY KEY 

    Refer to UPDATE ECU SECURITY KEY [10/2022 - ]

  9. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL 

    Refer to WORK PROCEDURE [10/2022 - ]

    HINT: 

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Refer to AUTOMATIC LEARNING CHART [08/2023 - ]