Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. 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 water control valve 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 throttle body with motor assembly Cleaning the deposits from the throttle body with motor assembly Air intake system parts	Inspection after repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [11/2021 - ]

NOTE:

This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

Refer to PRECAUTION [11/2021 - ]

COMPONENTS (REMOVAL)

Fig 1: Water Control Valve Removal Components (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
1	FRONT FENDER FRONT SPLASH SHIELD LH	53896B	-	-	-
2	FRONT FENDER FRONT SPLASH SHIELD RH	53895B	-	-	-
3	NO. 1 ENGINE UNDER COVER	51441	-	-	-
4	DRAIN ENGINE COOLANT	-	-	See step 4	-

Fig 2: Water Control Valve Removal Components (2 Of 2)

Callout - Procedure		Part Name Code
5	INTAKE MANIFOLD WITH INTERCOOLER ASSEMBLY	-	-	-	-
6	NO. 1 RADIATOR HOSE	16571	-	-	-
7	NO. 3 WATER BY-PASS HOSE	16267	-	-	-
8	WATER BY-PASS HOSE ASSEMBLY	16260	-	-	-
9	INLET HEATER WATER HOSE	87245	-	-	-
10	WATER CONTROL VALVE	16342	-	-	-

*1	GASKET	-	-
•	Non-reusable part	-	-