Caution / Notice / Hint

WARNING: This page is about a different car, the 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 ECM	Perform Vehicle Identification Number (VIN) registration	DTC is output	Refer to REGISTRATION [09/2023 - ]
	ECU configuration	-	Refer to ECU CONFIGURATION [09/2023 - ]
	Update ECU security key	Vehicle Control History (RoB) are stored	Refer to UPDATE ECU SECURITY KEY [09/2023 - ]
	Heavy knock history Save history Write history	-	Refer to REGISTRATION [09/2023 - ]
Replacement of hybrid motor control inverter assembly	ECU configuration	-	Refer to ECU CONFIGURATION [09/2023 - ]
Replacement of hybrid motor control inverter assembly	Front Resolver Correction value Registration Front Resolver Correction value Writing	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
Lighting System (w/ Automatic Headlight Beam Level Control System)	Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.	Refer to INITIALIZATION [09/2023 - ]
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
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.	-

When replacing parts, perform procedures according to the following table.

Part Replaced or Procedure Performed	Before replacement		After replacement
Part Replaced or Procedure Performed	Read the resolver compensation value Refer to UTILITY [09/2023 - ]	Check the resolver compensation value directly underneath the QR code Refer to UTILITY [09/2023 - ]	ECU Configuration Refer to ECU CONFIGURATION [09/2023 - ]	Write the resolver compensation value Refer to UTILITY [09/2023 - ]
Hybrid motor control inverter assembly	◦	*	◦	◦
EV motor control inverter assembly	◦	*	◦	◦
Transaxle assembly with motor	◦	◦	-	◦
Rear transaxle with motor assembly	◦	◦	-	◦
Transaxle assembly with motor and inverter	-	-	◦	-
Rear transaxle with motor and inverter assembly	-	-	◦	-

*: Perform this step if it was not possible to read the resolver compensation value before replacement.◦: Necessary-: Not necessary

COMPONENTS (REMOVAL)

Fig 1: Inverter Removal Components (1 Of 3)

Procedure		Part Name Code
1	PRECAUTION	-	See step 1	-	-
2	PERFORM RESOLVER LEARNING	-	-	-	See step 2
3	EV CONVERTER ASSEMBLY	G9200	-	-	-
4	SUPPORT ENGINE WITH TRANSAXLE ASSEMBLY WITH MOTOR AND INVERTER	-	See step 4	-	-
5	ENGINE MOUNTING STAY LH	12318	-	-	-
6	ENGINE MOUNTING INSULATOR SUB-ASSEMBLY LH	12306	-	-	-

Fig 2: Inverter Removal Components (2 Of 3)

Procedure		Part Name Code
7	UPPER INVERTER COVER	G9221G	See step 7	-	-
8	DISCONNECT NO. 1 INVERTER BUSBAR PLATE	-	See step 8	-	-
9	LIFT DOWN	-	See step 9	-	-
10	NO. 4 INVERTER COOLING HOSE	G9228A	See step 10	-	-
11	RESOLVER THERMISTOR WIRE	-	See step 11	-	-
12	ENGINE WIRE	82121	See step 12	-	-
13	BREATHER HOSE	-	See step 13	-	-
14	O-RING	-	See step 14	-	-
15	HYBRID MOTOR CONTROL INVERTER ASSEMBLY	G92A0	See step 15	-	-
16	INVERTER CASE GASKET	-	See step 16	-	-
17	INLET NO. 1 INVERTER COOLING HOSE	G922A	-	-	-

•

Non-reusable part

Fig 3: Inverter Removal Components (3 Of 3)

Procedure		Part Name Code
18	REMOVE NO. 1 INVERTER BUSBAR PLATE	-	See step 18	-	-