Caution / Notice / Hint

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. 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 HV floor under wire removal/installation are shown below.

NECESSARY PROCEDURE AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Disconnect cable from negative auxiliary battery terminal	Perform steering sensor zero point calibration	Lane Control System	Refer to INITIALIZATION [10/2018 - 07/2022]
		Parking Support Brake System*1
		Pre-collision System
		Lighting System (EXT)
	Memorize steering angle neutral point	Parking Assist Monitor System	Refer to INITIALIZATION [10/2018 - 07/2022]
	Initialize back door lock	Power Door Lock Control System	Refer to INITIALIZATION [10/2018 - ]
	Reset back door close position	Power Back Door System	Refer to INITIALIZATION [10/2018 - 07/2022]
Front wheel alignment adjustment	Clear zero point calibration data. Perform yaw rate and acceleration sensor zero point calibration.	DTCs are stored ABS warning light illuminates Brake warning light / yellow (minor malfunction) illuminates Slip indicator light illuminates VSC disabled or malfunctions	Refer to CALIBRATION [10/2018 - ]
Suspension, tires, etc.*2	Rear television camera assembly optical axis (Back camera position setting)	Parking Assist Monitor System	Refer to CALIBRATION [10/2018 - 07/2022]
Suspension, tires, etc.*2	Perform headlight ECU sub-assembly LH initialization	Lighting System (EXT)	Refer to INITIALIZATION [10/2018 - 10/2020] Refer to INITIALIZATION [10/2020 - ]

*1: When performing learning using the Techstream.

*2: If the vehicle height has changed due to suspension or tire replacement.

WARNING:

This vehicle has contains high voltage circuits standardized with orange colored wiring and connectors, so follow the instructions in this service information to perform the procedures correctly.

Fig 1: Charging System Precaution
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Refer to PRECAUTION [10/2018 - ]
If the correct procedures are not followed according to the instructions in this service information, there is a danger of electric shock from the high voltage circuits.
Be sure to wear insulating gloves when working on high voltage wiring or components.

Fig 2: Wear Insulated Gloves
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If work is performed without wearing insulating gloves, there is a danger of electric shock.