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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. SET EGR VALVE ASSEMBLY 
    1. GTY1133528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Set the EGR valve assembly to the camshaft housing.

        HINT: 

        At this time, do not install the parts with the bolts.

  2. CONNECT NO. 8 WATER BY-PASS HOSE 
  3. CONNECT NO. 4 WATER BY-PASS HOSE 
  4. INSTALL NO. 1 EGR COOLER GASKET 
    See step  3
  5. INSTALL EGR VALVE GASKET 
    See step  4
  6. INSTALL EGR COOLER ASSEMBLY 
    See step  5
  7. CONNECT NO. 4 WATER BY-PASS HOSE 
  8. CONNECT NO. 3 WATER BY-PASS HOSE 
  9. INSTALL EGR VALVE ASSEMBLY 
    1. GTY1131093Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an 8 mm socket wrench, install the EGR valve assembly to the camshaft housing with the 2 bolts.

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

  10. INSTALL EGR INLET GASKET 
  11. INSTALL EGR VALVE ADAPTER GASKET 
  12. INSTALL NO. 1 EGR PIPE SUB-ASSEMBLY 
    1. GTY1131115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an 8 mm socket wrench, install the No. 1 EGR pipe sub-assembly to the intake manifold and EGR valve assembly with the 4 bolts.

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

  13. CONNECT ENGINE WIRE 

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

  14. CONNECT NO. 2 FUEL VAPOR FEED HOSE 
  15. CONNECT NO. 1 FUEL VAPOR FEED HOSE 
  16. INSTALL INVERTER WITH CONVERTER ASSEMBLY 

    Refer to INSTALLATION [10/2022 - ]

  17. ADD ENGINE COOLANT (for Engine) 

    Refer to PROCEDURE - Step 5

  18. INSPECT FOR COOLANT LEAK (for Engine) 
    Refer to PROCEDURE - Step 1
  19. INSPECT FOR EXHAUST GAS LEAK 

    If gas is leaking, tighten the areas necessary to stop the leak. Replace damaged parts as necessary.

    HINT: 

    Perform "Inspection After Repairs" after repairing or replacing the exhaust system.

    Refer to PROCEDURE - Step 6

  20. PERFORM INITIALIZATION 
    1. Perform "Inspection After Repair" after replacing a EGR valve assembly.

      Refer to INITIALIZATION [10/2022 - ]

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