Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. 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 exhaust manifold assembly LH 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 1) Gas leak from exhaust system is repaired	Inspection After Repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [12/2023 - ]

WARNING:

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

Fig 1: Do Not Touch The Engine, Exhaust Manifold Or Other High Temperature Components While The Engine Is Hot
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

Fig 2: 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 Manifold (For Bank 2) Removal Components (1 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
1	FRONT WHEEL OPENING EXTENSION PAD LH	53852B	-	-	-
2	FRONT WHEEL OPENING EXTENSION PAD RH	53851D	-	-	-
3	NO. 1 ENGINE UNDER COVER	51441	-	-	-
4	SUSPENSION TOWER DAMPER	48691E	See step 4	-	-

Fig 2: Exhaust Manifold (For Bank 2) Removal Components (2 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
5	FRONT EXHAUST PIPE ASSEMBLY	17410	See step 5	-	-
6	FRONT NO. 2 EXHAUST PIPE SUB-ASSEMBLY	17402	See step 6	-	-

*1	NO. 4 EXHAUST PIPE SUPPORT	-	-
•	Non-reusable part	-	-

Fig 3: Exhaust Manifold (For Bank 2) Removal Components (3 Of 3)

Procedure		Part Name Code
7	NO. 2 EXHAUST MANIFOLD HEAT INSULATOR	17168	See step 7	-	-
8	AIR FUEL RATIO SENSOR (for Bank 2 Sensor 1)	89467B	See step 8	-	-
9	NO. 2 MANIFOLD STAY	17119	See step 9	-	-
10	EXHAUST MANIFOLD ASSEMBLY LH	17150	See step 10	-	-
11	EXHAUST MANIFOLD TO HEAD GASKET LH	17173A	-	-	-
12	STUD BOLT	-	-	-	-

•

Non-reusable part