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 rear transaxle with motor and 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*1	Refer to INITIALIZATION [09/2023 - ]
Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [09/2023 - ]
Replacement of rear transaxle with motor and inverter assembly	ECU configuration	-	Refer to ECU CONFIGURATION [09/2023 - ]
Replacement of rear transaxle with motor assembly	Rear 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 - ]
Replacement of EV motor control inverter assembly	ECU configuration	-	Refer to ECU CONFIGURATION [09/2023 - ]
Replacement of EV motor control inverter assembly	Rear Resolver Correction value Registration Rear 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 - ]
Suspension parts*2	Rear television camera assembly optical axis (Back camera position setting)	Parking Assist Monitor System	Refer to CALIBRATION [09/2023 - ]
	Parking assist ECU initialization	Panoramic View Monitor System	Refer to CALIBRATION [09/2023 - ]
	Parking assist ECU initialization	Advanced Park	Refer to CALIBRATION [09/2023 - ]
	w/ Automatic Headlight Beam Level Control System: Perform headlight ECU (headlight assembly LH) initialization	Lighting System (EXT)	Refer to INITIALIZATION [09/2023 - ]
w/ Automatic Headlight Beam Level Control System: Rear height control sensor sub-assembly LH	Perform headlight ECU sub-assembly LH initialization	Lighting system (w/ Automatic Headlight Beam Level Control System)	Refer to INITIALIZATION [09/2023 - ]
Tires	Initialization34 Tire Position Identification34	Tire Pressure Warning System	Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System) table below Refer to WORK PROCEDURE [09/2023 - 12/2023]
	Rear television camera assembly optical axis (Back camera position setting)	Parking Assist Monitor System	Refer to CALIBRATION [09/2023 - ]
	Parking assist ECU initialization	Panoramic View Monitor System	Refer to CALIBRATION [09/2023 - ]
	Parking assist ECU initialization	Advanced Park	Refer to CALIBRATION [09/2023 - ]
Rear wheel alignment adjustment	Perform "Calibration"	DTCs are stored ABS warning light illuminates Brake system warning light (yellow indicator) illuminates Slip indicator light illuminates Electronically controlled brake system disabled or malfunctions	Refer to RESET MEMORY / CALIBRATION [09/2023 - ]

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

*2: The vehicle height changes because of tire replacement.

*3: Also necessary after performing a tire rotation.

*4: It is not necessary to perform this procedure if the tire pressure warning valve and transmitters are installed to the same location.

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

To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The rear transaxle with motor and inverter assembly is very heavy. Be sure to follow the procedure described in the appropriate service information , or the engine lifter may suddenly drop or the rear transaxle with motor and inverter assembly may fall off the engine lifter.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	An Object Exceeding Weight Limit of Engine Lifter

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: Rear Transaxle Assembly Removal Components [09/2023 - 12/2023] (1 Of 3)

Procedure		Part Name Code
1	REAR SUSPENSION MEMBER SUB-ASSEMBLY	51206A	-	-	-
2	DISCONNECT FRAME WIRE	82164	-	-	-
3	REAR TRANSAXLE WITH MOTOR AND INVERTER ASSEMBLY	30610A	See step 3	-	-

*1	UPPER MOTOR MOUNTING STOPPER	*2	LOWER MOTOR MOUNTING STOPPER
•	Non-reusable part	-	-

Fig 2: Rear Transaxle Assembly Removal Components [09/2023 - 12/2023] (2 Of 3)

Procedure		Part Name Code
4	REMOVE FRAME WIRE	82164	See step 4	-	-
5	NO. 1 TRANSMISSION OIL COOLER HOSE ASSEMBLY	32930F	See step 5	-	-
6	NO. 1 INVERTER COOLING HOSE ASSEMBLY	G90A0A	See step 6	-	-
7	MOTOR MOUNTING STAY RH	G2317	-	-	-
8	REAR MOTOR MOUNTING INSULATOR RH	G2366	-	-	-
9	MOTOR MOUNTING INSULATOR LH	G2372	-	-	-
10	UPPER INVERTER COVER SUB-ASSEMBLY	G9022B	See step 10	-	-
11	CHECK TERMINAL VOLTAGE	-	See step 11	-	-
12	HV BATTERY CHARGER WIRE	821H5A	See step 12	-	-

Fig 3: Rear Transaxle Assembly Removal Components [09/2023 - 12/2023] (3 Of 3)

Procedure		Part Name Code
13	HOSE BRACKET	-	-	-	-
14	WIRE HARNESS CLAMP BRACKET	-	-	-	-