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Installation [10/2022 - 08/2023]: Procedure

WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSTALL FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY) 
    1. GTY1132038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a View A *b 90° (Tabs of Clip Installation Area)
      *c Upper Side of Vehicle *d Right Side of Vehicle
      *e 2 to 7 mm (0.0787 to 0.276 in.) - -
      1. Connect the flow shutting valve (water by-pass hose assembly) to the water by-pass outlet sub-assembly and slide the clip to secure it.
        NOTE:
        • Make sure to slide the flow shutting valve (water by-pass hose assembly) until it contacts the hose stopper of the water by-pass outlet sub-assembly.
        • Make sure that the tabs of the clip are within the area shown in the illustration.
      2. Install the flow shutting valve (water by-pass hose assembly) with the bolt.

        Torque: 19 N.m (194 kgf/cm, 14 ft.lbf) 

      3. Connect the No. 2 water by-pass pipe sub-assembly with the bolt.

        Torque: 19 N.m (194 kgf/cm, 14 ft.lbf) 

    2. GTY1133004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a View A *b 90° (Tabs of Clip Installation Area)
      *c Upper Side of Vehicle *d Right Side of Vehicle
      *e 2 to 7 mm (0.0787 to 0.276 in.) - -
      1. Connect the heater water hose to the flow shutting valve (water by-pass hose assembly) and slide the clip to secure it.
        NOTE:
        • Make sure to slide the heater water hose until it contacts the hose stopper of the flow shutting valve (water by-pass hose assembly).
        • Make sure that the tabs of the clip are within the area shown in the illustration.
    3. GTY1133002Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion *b Cutout
      *c Retainer - -
      Push Push in
      1. Connect the inlet heater water hose connector to the flow shutting valve (water by-pass hose assembly).
        NOTE:

        Check that there is no damage or foreign matter on the connecting parts of the water lines.

        1. Align the protrusions of the inlet heater water hose connector with the cutouts in the flow shutting valve (water by-pass hose assembly) and securely connect the inlet heater water hose connector.

        2. Push in the retainer.

        3. Check that the flow shutting valve (water by-pass hose assembly) and inlet heater water hose connector are securely connected by pulling on them.

    4. GTY1133715Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion *b Cutout
      *c Retainer - -
      Push Push in
      1. Connect the outlet heater water hose connector to the No. 2 water by-pass pipe sub-assembly.
        NOTE:

        Check that there is no damage or foreign matter on the connecting parts of the water lines.

        1. Align the protrusion of the No. 2 water by-pass pipe sub-assembly with the cutout in the outlet heater water hose connector and securely connect the outlet heater water hose connector.

        2. Push in the retainer.

        3. Check that the No. 2 water by-pass pipe sub-assembly and outlet heater water hose connector are securely connected by pulling on them.

    5. GTY1130365Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL WIRING HARNESS CLAMP BRACKET 

    Refer to PROCEDURE - Step 7

  3. INSTALL OUTER COWL TOP PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 18

  4. INSTALL WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to INSTALLATION [10/2022 - ]

  5. INSTALL INVERTER WITH CONVERTER ASSEMBLY 

    Refer to INSTALLATION [10/2022 - ]

  6. ADD ENGINE COOLANT (for Engine) 

    Refer to PROCEDURE - Step 5

  7. INSPECT FOR COOLANT LEAK (for Engine) 

    Refer to PROCEDURE - Step 1

  8. INSTALL NO. 1 ENGINE UNDER COVER 

    Refer to PROCEDURE - Step 67

  9. INSTALL FRONT WHEEL OPENING EXTENSION PAD RH 
  10. INSTALL FRONT WHEEL OPENING EXTENSION PAD LH 
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