Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 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 hybrid vehicle transaxle 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 [10/2022 - ]
Replacement of ECM	Perform Vehicle Identification Number (VIN) registration	DTC is output	Refer to REGISTRATION [10/2022 - ]
	ECU configuration	-	Refer to ECU CONFIGURATION [10/2022 - ]
	Update ECU security key	Vehicle Control History (RoB) are stored	Refer to UPDATE ECU SECURITY KEY [10/2022 - ]
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	for THS-HEV Model: Refer to UTILITY [10/2022 - ] for PHEV Model: Refer to UTILITY [08/2023 - ]
Replacement of hybrid vehicle transaxle assembly	Resolver learning Initialize resolver	DTCs are stored Slight vibration at a vehicle speed of 5 km/h (3 mph) or less Shock or vibration during acceleration	for THS-HEV Model: Refer to UTILITY [10/2022 - ] for PHEV Model: Refer to UTILITY [08/2023 - ]
Tires	Initialization23 Tire Position Identification23	Tire Pressure Warning System	Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System) table below Refer to WORK PROCEDURE [08/2023 - ]
	Rear television camera assembly optical axis (Back camera position setting)*4	Parking Assist Monitor System	Refer to CALIBRATION [10/2022 - ]
	Parking assist ECU initialization*4	Panoramic View Monitor System	Refer to CALIBRATION [10/2022 - ]
	Parking assist ECU initialization*4	Advanced Park	Refer to CALIBRATION [10/2022 - ]
Replacement of engine assembly Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [10/2022 - ]
Replacement of front bumper assembly*5	Front television camera view adjustment	Panoramic View Monitor System	Refer to CALIBRATION [10/2022 - ]
Replacement of front bumper assembly*5	Front television camera view adjustment	Advanced Park	Refer to CALIBRATION [10/2022 - ]
Suspension parts	Rear television camera assembly optical axis (Back camera position setting)	Parking Assist Monitor System	Refer to CALIBRATION [10/2022 - ]
	Parking assist ECU initialization	Panoramic View Monitor System	Refer to CALIBRATION [10/2022 - ]
	Parking assist ECU initialization	Advanced Park	Refer to CALIBRATION [10/2022 - ]
	Perform headlight ECU sub-assembly LH initialization	Lighting System (w/ Automatic Headlight Beam Level Control System)	Refer to INITIALIZATION [10/2022 - ]
Front wheel alignment adjustment	Perform "Calibration"	DTCs are stored ABS warning light illuminates Slip indicator light illuminates Electronically controlled brake system does not operate correctly	for PHEV Model: Refer to RESET MEMORY / CALIBRATION [08/2023 - ] except PHEV Model: Refer to RESET MEMORY / CALIBRATION [10/2022 - ]
for PHEV Model: Replacement of service plug grip	High voltage fuse accumulated load history reset	High voltage fuse accumulated load history reset	Refer to UTILITY [08/2023 - ]

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

*2: Also necessary after performing a tire rotation.

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

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

*5: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.

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

for THS-HEV Model:

Refer to PRECAUTION [10/2022 - ]

for PHEV Model:

Refer to PRECAUTION [08/2023 - ]

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 manifold or other high temperature components while the engine is hot.

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	An Object Exceeding Weight Limit of Engine Lifter

The hybrid vehicle transaxle assembly is very heavy. Be sure to follow the procedure described in the appropriate service information , or the transmission jack may suddenly drop or a part may fall.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	An Object Exceeding Weight Limit of Transmission Jack

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 [10/2022 - ]
When disconnecting a wire harness of any component connected to the supply power of the integrated capacitor (integration control supply) or when removing the integrated capacitor (integration control supply), make sure to wait 5 minutes or more after turning the ignition switch off for self-diagnosis to complete and the voltage of the integrated capacitor (integration control supply) to discharge.

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 15 km/h (10 mph) or more for 1 second or more.	Refer to INITIALIZATION [10/2022 - ]
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 [10/2022 - ]
Air Conditioning System	except PHEV Model: After the ignition switch is turned to ON, the servo motor standard position is recognized. for PHEV Model: After the ignition switch is turned to ON, the servo motor and cooler expansion valve standard position is recognized.	-

Effect/Inoperative Function when Necessary Procedure not Performed

Necessary Procedure

Link

Power Back Door System

Reset back door close position

Refer to INITIALIZATION [10/2022 - ]

Air Conditioning System

except PHEV Model:

After the ignition switch is turned to ON, the servo motor standard position is recognized.

for PHEV Model:

After the ignition switch is turned to ON, the servo motor and cooler expansion valve standard position is recognized.

COMPONENTS (REMOVAL)

Fig 1: Hybrid Vehicle Transaxle Removal Components With Torque Specifications [10/2024 - ] (1 Of 7)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
1	PERFORM RESOLVER INITIALIZATION	-	-	-	See step 1
2	ENGINE ASSEMBLY WITH TRANSAXLE	-	-	-	-
3	FUEL DELIVERY GUARD	23825A	-	-	-
4	ENGINE HANGERS	-	See step 4	-	-
5	STEERING GEAR HEAT INSULATOR	45319	-	-	-
6	ENGINE WIRE	82121	See step 6	-	-
7	HV AIR CONDITIONING WIRE	821H2	-	-	-

*A	for PHEV Model	*B	for HEV Model
	N.m (kgf/cm, ft.lbf): Specified torque	-	-

Fig 2: Hybrid Vehicle Transaxle Removal Components [10/2024 - ] (2 Of 7)

Procedure		Part Name Code
8	TRANSAXLE UNDER STOPPER BRACKET	33185B	-	-	-
9	NO. 2 TRANSMISSION OIL COOLER HOSE ASSEMBLY	32930G	-	-	-
10	NO. 1 MOTOR COOLING PIPE	G1251B	See step 10	-	-
11	WIRE HARNESS CLAMP BRACKET	-	-	-	-
12	OIL PUMP WITH MOTOR ASSEMBLY	35300B	-	-	-
13	STARTER HOLE INSULATOR	28193	-	-	-
14	FLYWHEEL HOUSING SIDE COVER	11363A	-	-	-

*A	w/ Oil Pump with Motor Assembly	*B	w/o Oil Pump with Motor Assembly
*1	NO. 2 OIL COOLER TUBE CLAMP	-	-
•	Non-reusable part	-	-

Fig 3: Hybrid Vehicle Transaxle Removal Components [10/2024 - ] (3 Of 7)

Procedure		Part Name Code
15	FRONT FRAME ASSEMBLY	51100G	-	-	-
16	FRONT ENGINE MOUNTING INSULATOR	12361A	-	-	-
17	FRONT ENGINE MOUNTING BRACKET	12311A	-	-	-
18	REAR ENGINE MOUNTING INSULATOR	12371A	-	-	-
19	REAR ENGINE MOUNTING BRACKET	12303	-	-	-

Fig 4: Hybrid Vehicle Transaxle Removal Components [10/2024 - ] (4 Of 7)

Procedure		Part Name Code
20	HYBRID VEHICLE TRANSAXLE ASSEMBLY	30900	See step 20	-	-
21	CONNECTOR COVER	82821T	See step 21	-	-
22	TERMINAL CAP	82823M	See step 22	-	-
23	MOTOR CABLE	G1148	See step 23	-	-

•

Non-reusable part

Fig 5: Hybrid Vehicle Transaxle Removal Components [10/2024 - ] (5 Of 7)

Procedure		Part Name Code
24	OUTLET MOTOR HOSE	G1282B	See step 24	-	-
25	MOTOR COOLING COOLER	G125A	-	-	-
26	NO. 2 TRANSMISSION OIL COOLER BRACKET	32913J	-	-	-
27	NO. 2 MOTOR COOLING PIPE	G1252A	-	-	-
28	NO. 2 MOTOR COOLING PIPE	G1252A	-	-	-

*A	w/ Oil Pump with Motor Assembly	*B	w/o Oil Pump with Motor Assembly
•	Non-reusable part	-	-

Fig 6: Hybrid Vehicle Transaxle Removal Components [10/2024 - ] (6 Of 7)

Procedure		Part Name Code
29	NO. 3 INVERTER BRACKET	G9216	-	-	-
30	WIRE HARNESS CLAMP BRACKET	-	-	-	-
31	TRANSAXLE HOUSING PLUG	-	-	-	-
32	STUD BOLT	-	See step 32	-	-
33	TRANSAXLE BREATHER PLUG	30900N	-	-	-
34	TRANSAXLE HOUSING TUBE CONNECTOR	30900K	-	-	-

*A	w/ Oil Pump with Motor Assembly	*B	w/o Oil Pump with Motor Assembly
•	Non-reusable part	*	Precoated part

Fig 7: Hybrid Vehicle Transaxle Removal Components [10/2024 - ] (7 Of 7)

Procedure		Part Name Code
35	OUTLET MOTOR HOSE	G1282B	-	-	-

*A	w/o Oil Pump with Motor Assembly	-	-
*1	NO. 2 MOTOR COOLING PIPE	-	-