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 inverter with converter 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 - ]

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

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: Inverter With Converter Removal Components (1 Of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
1	PRECAUTION	-	See step 1	-	-
2	SERVICE PLUG GRIP	G3834	-	-	-
3	COOLANT (for Inverter)	-	-	See step 3	-

Fig 2: Inverter With Converter Removal Components With Torque Specifications (2 Of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
4	NO. 1 ENGINE COVER SUB-ASSEMBLY	12601B	See step 4	-	-
5	NO. 2 VENTILATION HOSE	12262	-	-	-
6	AIR CLEANER ASSEMBLY WITH AIR CLEANER HOSE	-	-	-	-
7	ECM	89661	-	-	-
8	NO. 2 INVERTER PROTECTOR	G921F	-	-	-
9	ENGINE ROOM MAIN WIRE	82111	See step 9	-	-
10	REMOVE CONNECTOR COVER ASSEMBLY	-	See step 10	-	-
11	CHECK TERMINAL VOLTAGE	-	See step 11	-	-
12	TEMPORARILY INSTALL CONNECTOR COVER ASSEMBLY	-	See step 12	-	-
13	FLOOR UNDER WIRE	821H1	See step 13	-	-

N*m (kgf*cm, ft.*lbf): Specified torque

Fig 3: Inverter With Converter Removal Components (3 Of 4)

Callout - Procedure		Part Name Code
14	HV AIR CONDITIONING WIRE	821H2	See step 14	-	-
15	WIRE HARNESS CLAMP BRACKET	-	-	-	-
16	ENGINE WIRE	82121	See step 16	-	-
17	NO. 1 INVERTER COOLING HOSE	G9225K	See step 17	-	-
18	NO. 4 INVERTER COOLING HOSE	G9228A	See step 18	-	-
19	UPPER INVERTER COVER SUB-ASSEMBLY	G9022A	See step 19	-	-
20	MOTOR CABLE	G1148	See step 20	-	-

Fig 4: Inverter With Converter Removal Components (4 Of 4)

Callout - Procedure		Part Name Code
21	WIRE HARNESS CLAMP BRACKET	-	-	-	-
22	INVERTER WITH CONVERTER ASSEMBLY	G92A0	See step 22	-	-
23	NO. 1 INVERTER BRACKET	G9214	See step 6	-	-
24	NO. 2 INVERTER BRACKET	G9215	-	-	-
25	WIRE HARNESS CLAMP BRACKET	-	-	-	-
26	WIRE HARNESS CLAMP BRACKET	-	-	-	-
27	WIRE HARNESS CLAMP BRACKET	-	-	-	-
28	HYBRID INVERTER PROTECTOR ASSEMBLY	G92D0	-	-	-