Caution / Notice / Hint

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.

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during front exhaust pipe assembly (TWC: Rear Catalyst) and tail exhaust pipe assembly removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Replacement of air fuel ratio sensor (sensor 2) Gas leak from exhaust system is repaired	Perform Inspection After Repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [10/2022 - ]

WARNING:

To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

COMPONENTS (REMOVAL)

Fig 1: Exhaust Pipe Removal Components [10/2022 - 08/2023] (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
1	TAIL EXHAUST PIPE ASSEMBLY	17430	See step 1	-	-

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Non-reusable part

Fig 2: Exhaust Pipe Removal Components [10/2022 - 08/2023] (2 Of 2)

Procedure		Part Name Code
2	AIR FUEL RATIO SENSOR (for Sensor 2)	89467C	-	-	-
3	DRAIN ENGINE COOLANT (for Engine)	-	-	See step 3	-
4	FRONT EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst)	17410	See step 4	-	-

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Non-reusable part