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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 116 (Engine Cooling System (A25A-FXS) - Service Information) >> Thermostat >> Installation [06/2018 - 08/2021] >> Procedure

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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  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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