Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 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 flow shutting valve (water by-pass hose 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 inverter with converter assembly	Resolver learning	DTCs are stored Slight vibration at a vehicle speed of 5 km/h (3 mph) or less Shock or vibration during acceleration	Refer to UTILITY [11/2021 - ]
Replacement of ECM	Update ECU security key	Vehicle Control History (RoB) are stored	Refer to UPDATE ECU SECURITY KEY [11/2021 - ]
Replacement of ECM	Perform Vehicle Identification Number (VIN) registration	DTC is output	Refer to REGISTRATION [11/2021 - ]

NOTE:

To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) auxiliary battery terminal.

Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

LEARNING COMPLETES WHEN VEHICLE IS DRIVEN

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Lighting System (EXT)	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.	Refer to INITIALIZATION [11/2021 - ]
Front Camera System
Adaptive High Beam System

LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
E-latch System Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.	Refer to INITIALIZATION [11/2021 - ]
Power Back Door System	Reset back door close position	Refer to INITIALIZATION [11/2021 - ]
Air Conditioning System	After the ignition switch is turned to ON, the servo motor standard position is recognized.	-

COMPONENTS (REMOVAL)

Fig 1: Flow Shutting 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 (for Engine)	-	-	See step 4	-

Fig 2: Flow Shutting Valve Removal Components (2 Of 2)

Callout - Procedure		Part Name Code
5	INVERTER WITH CONVERTER ASSEMBLY	G92A0	-	-	-
6	WIRING HARNESS CLAMP BRACKET	82715	See step 6	-	-
7	FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY)	16260	See step 7	-	-

*1	OUTLET HEATER WATER HOSE B	*2	INLET HEATER WATER HOSE B
*3	NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY	-	-