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 HV supply stack sub-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 HV supply stack sub-assembly	Battery status info update Prediagnostic battery charge Battery diagnosis	HV battery status information cannot be updated	Refer to UTILITY [11/2021 - ]

WARNING:

Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the repair information.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Refer to PRECAUTION [11/2021 - ]

To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The hybrid system has high-voltage circuits. Accidents, such as electric shock, or electric leaks may result if the hybrid system is not operated in a correct manner. Make sure to follow the correct procedure.
When disposing of an HV battery or HV supply stack sub-assembly, make sure to return them through an authorized collection agent who is capable of handling them safely.
Before returning an HV battery, make sure to perform a recovery inspection.
Before returning an HV supply stack sub-assembly, make sure to perform a recovery inspection.
Make a note of the output DTCs as some of them may be necessary for "Recovery Inspection" of the HV battery and HV supply stack sub-assemblies.

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 - ]
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Refer to BEFORE DISCONNECTING BATTERY [11/2021 - ]

Hold the areas shown in the illustration and lift the HV supply stack sub-assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Bottom of HV Supply Stack Sub-Assembly

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: HV Battery Stack Removal Components (1 Of 2)

Callout - Procedure		Part Name Code
1	READ VALUE USING GTS	-	See step 1	-	-
2	HV BATTERY	G9510	-	-	-
3	UPPER HV BATTERY COVER SUB-ASSEMBLY	G920NB	See step 3	-	-
4	NO. 1 HV BATTERY HOSE	G929A	See step 4	-	-
5	BATTERY ECU ASSEMBLY	89890A	See step 5	-	-

Fig 2: HV Battery Stack Removal Components (2 Of 2)

Callout - Procedure		Part Name Code
6	HV BATTERY JUNCTION BLOCK ASSEMBLY	G92Z0	See step 6	-	-
7	HYBRID BATTERY TERMINAL BLOCK	G92Z2	See step 7	-	-
8	NO. 2 HYBRID BATTERY SHIELD SUB-ASSEMBLY	G920R	See step 8	-	-
9	NO. 1 HV BATTERY COVER INTAKE DUCT	G92E1	See step 9	-	-
10	NO. 1 HV SUPPLY STACK SUB-ASSEMBLY	G9508	See step 10	-	-
11	NO. 2 HV SUPPLY STACK SUB-ASSEMBLY	G9509	See step 11	-	-
12	PERFORM RECOVERY INSPECTION	-	See step 12	-	-

ELECTRIC VEHICLE BATTERY PLUG ASSEMBLY