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Home >> Lexus >> 2023 >> ES 300h Base >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System (A25A-FXS) - Service Information >> Thermostat >> Installation [06/2018 - 08/2021] >> Procedure

Installation [06/2018 - 08/2021]: Procedure

  1. INSTALL WATER INLET WITH THERMOSTAT SUB-ASSEMBLY 
    1. Install a new gasket to the water inlet with thermostat sub-assembly.

      HINT: 

      Be sure to clean the contact surfaces.

    2. Using an 8 mm socket wrench, install the water inlet with thermostat sub-assembly with the 2 bolts.

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

    3. Connect the No. 7 water by-pass hose to the water inlet with thermostat sub-assembly and slide the clip to secure it.
    4. Connect the water inlet with thermostat sub-assembly connector.
  2. CONNECT NO. 2 RADIATOR HOSE 

    Refer to PROCEDURE - Step 29

  3. ADD ENGINE COOLANT (for Engine) 

    Refer to PROCEDURE - Step 2

  4. INSPECT FOR COOLANT LEAK (for Engine) 

    Refer to PROCEDURE - Step 1

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