Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. 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 hybrid motor control inverter 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
Auxiliary battery terminal is disconnected/reconnected	Operate the multiplex network master switch assembly (retractable outer mirror switch) to extend and retract the outer rear view mirror assembly	Parking Support Brake System*	Refer to INITIALIZATION [09/2023 - ]
Replacement of hybrid motor control inverter 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 [09/2023 - ]

*: When "[Parking Support Brake System icon] System Stopped See Owner's Manual" is displayed on the multi-information display.

WARNING:

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Refer to PRECAUTION [09/2023 - ]

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 [09/2023 - ]

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
Front Camera System	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.	Refer to INITIALIZATION [09/2023 - ]
Adaptive High Beam System
Lighting System (w/ Automatic Headlight Beam Level Control System)

LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Power Back Door System	Reset back door close position	Refer to INITIALIZATION [09/2023 - ]
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 (For PHEV Model) Removal Components (1 Of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

Procedure		Part Name Code
4	AIR CLEANER ASSEMBLY WITH AIR CLEANER HOSE	-	-	-	-
5	ECM	89661	-	-	-
6	NO. 2 INVERTER PROTECTOR	G921F	See step 6	-	-
7	CHECK TERMINAL VOLTAGE	-	See step 7	-	-
8	ENGINE ROOM MAIN WIRE	82111	See step 8	-	-
9	NO. 2 FUEL VAPOR FEED HOSE ASSEMBLY	23830	-	-	-
10	FLOOR UNDER WIRE	821H1	See step 10	-	-

*1	Connector Cover Assembly	-	-
	N.m (kgf/cm, ft.lbf): Specified torque	-	-

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

Procedure		Part Name Code
11	ENGINE WIRE	82121	See step 11	-	-
12	NO. 4 INVERTER COOLING HOSE	G9228A	See step 12	-	-
13	NO. 3 INVERTER COOLING HOSE	G9227A	See step 13	-	-
14	UPPER INVERTER COVER SUB-ASSEMBLY	G9022A	See step 14	-	-
15	MOTOR CABLE	G1148	See step 15	-	-

NO. 1 VENTILATION HOSE

Fig 4: Inverter With Converter (For PHEV Model) Removal Components (4 Of 4)

Procedure		Part Name Code
16	HYBRID MOTOR CONTROL INVERTER ASSEMBLY	G92A0	See step 16	-	-
17	NO. 1 INVERTER BRACKET	G9214	See step 17	-	-
18	NO. 2 INVERTER BRACKET	G9215	-	-	-
19	NO. 1 WATER HOSE CLAMP BRACKET	16575D	-	-	-
20	WIRE HARNESS CLAMP BRACKET	-	-	-	-
21	WIRE HARNESS CLAMP BRACKET	-	-	-	-
22	WIRE HARNESS CLAMP BRACKET	-	-	-	-
23	WIRE HARNESS CLAMP BRACKET	-	-	-	-
24	WIRE HARNESS CLAMP BRACKET	-	-	-	-
25	HYBRID INVERTER PROTECTOR ASSEMBLY	G92D0	-	-	-