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 engine 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) or frame number 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	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	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) Refer to WORK PROCEDURE [08/2023 - ]
	Rear television camera assembly optical axis (Back camera position setting)*5	Parking Assist Monitor System	Refer to CALIBRATION [10/2022 - ]
	Parking assist ECU initialization*5	Panoramic View Monitor System	Refer to CALIBRATION [10/2022 - ]
	Parking assist ECU initialization*5	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*4	Front television camera view adjustment	Panoramic View Monitor System	Refer to CALIBRATION [10/2022 - ]
Replacement of front bumper assembly*4	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 (EXT)	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	Refer to RESET MEMORY / CALIBRATION [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: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.

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

WARNING:

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

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

NOTE:

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.
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 - ]

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 [10/2022 - ]
Adaptive High Beam System
Lighting System (EXT)

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

COMPONENTS (REMOVAL)

Fig 1: Engine Assembly (For PHEV Model) Removal Components (1 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
1	PRECAUTION	-	See step 1	-	-
2	RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM	-	-	See step 2	-
3	DISCHARGE FUEL SYSTEM PRESSURE	-	See step 3	-	-
4	ALIGN FRONT WHEELS FACING STRAIGHT AHEAD	-	See step 4	-	-
5	SECURE STEERING WHEEL	-	See step 5	-	-
6	FRONT WHEELS	-	-	-	-
7	FRONT WHEEL OPENING EXTENSION PAD LH	53852B	-	-	-
8	FRONT WHEEL OPENING EXTENSION PAD RH	53851D	-	-	-
9	NO. 1 ENGINE UNDER COVER	51441	-	-	-
10	NO. 2 ENGINE UNDER COVER ASSEMBLY	51420	-	-	-
11	FRONT FENDER APRON SEAL LH	53737B	-	-	-
12	FRONT FENDER APRON SEAL RH	53736	-	-	-

Fig 2: Engine Assembly (For PHEV Model) Removal Components (2 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
13	FRONT BUMPER ASSEMBLY	-	-	-	-
14	FRONT BUMPER LOWER ABSORBER	52618	-	-	-
15	NO. 2 FRONT BUMPER REINFORCEMENT	52132A	-	-	-

Fig 3: Engine Assembly (For PHEV Model) Removal Components (3 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
16	DRAIN ENGINE COOLANT (for Engine)	-	-	See step 16	-
17	DRAIN ENGINE OIL	-	-	See step 17	-
18	DRAIN HYBRID TRANSAXLE FLUID	-	-	See step 18	-
19	NO. 1 ENGINE COVER SUB-ASSEMBLY	12601B	See step 19	-	-
20	HYBRID MOTOR CONTROL INVERTER ASSEMBLY	G92A0	-	-	-
21	FUEL VAPOR FEED HOSE ASSEMBLY	23820	-	-	-
22	OUTLET HEATER WATER HOSE	87246	See step 22	-	-
23	INLET HEATER WATER HOSE	87245	See step 23	-	-
24	FUEL TUBE SUB-ASSEMBLY	23901	See step 24	-	-
25	NO. 1 RADIATOR HOSE	16571C	-	-	-
26	NO. 2 RADIATOR HOSE	16572D	-	-	-
27	SUCTION HOSE SUB-ASSEMBLY	88704	See step 27	-	-
28	DISCHARGE HOSE SUB-ASSEMBLY	88703	See step 28	-	-
29	WIRE HARNESS	-	See step 29	-	-
30	FLOOR UNDER WIRE	821H1	See step 30	-	-
31	NO. 5 INVERTER COOLING HOSE	G9229A	-	-	-
32	NO. 1 TRANSMISSION OIL COOLER HOSE ASSEMBLY	32930F	-	-	-
33	NO. 5 WATER BY-PASS HOSE	16282F	-	-	-
34	STEERING INTERMEDIATE SHAFT ASSEMBLY	45220	See step 34	-	-

*1	NO. 1 RELAY BLOCK COVER	*2	NO. 1 FUEL PIPE CLAMP
*3	INLET MOTOR HOSE	*4	OUTLET MOTOR HOSE
•	Non-reusable part	-	-

Fig 4: Engine Assembly (For PHEV Model) Removal Components (4 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
35	FRONT FLOOR COVER LH	58166A	See step 35	-	-
36	FRONT FLOOR COVER RH	58165C	See step 36	-	-
37	ENGINE UNDER COVER HEAT INSULATOR	51468B	See step 37	-	-

NO. 23 TRACTION BATTERY BRACKET

Fig 5: Engine Assembly (For PHEV Model) Removal Components (5 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
38	FRONT EXHAUST PIPE ASSEMBLY	17410	See step 38	-	-

•

Non-reusable part

Fig 6: Engine Assembly (For PHEV Model) Removal Components (6 Of 9)

Procedure		Part Name Code
39	FRONT DRIVE SHAFT ASSEMBLY	-	-	-	-
40	TIE ROD ASSEMBLY LH	45470	See step 40	-	-
41	TIE ROD ASSEMBLY RH	45460	-	-	-
42	TRANSMISSION OIL COOLER AIR DUCT	32917A	-	-	-
43	ENGINE ASSEMBLY WITH TRANSAXLE	-	See step 43	-	-

*1	FRONT BUMPER EXTENSION SUB-ASSEMBLY LH	*2	FRONT BUMPER EXTENSION SUB-ASSEMBLY RH
*3	FRONT SUSPENSION MEMBER BRACE REAR LH	*4	FRONT SUSPENSION MEMBER BRACE REAR RH
*5	ENGINE MOUNTING STAY LH	*6	COTTER PIN
•	Non-reusable part	-	-

Fig 7: Engine Assembly (For PHEV Model) Removal Components (7 Of 9)

Procedure		Part Name Code
44	FUEL DELIVERY GUARD	23825A	-	-	-
45	INSTALL ENGINE HANGERS	-	See step 45	-	-
46	STEERING GEAR HEAT INSULATOR	45319	-	-	-
47	DISCONNECT ENGINE WIRE	82121	See step 47	-	-
48	FLYWHEEL HOUSING UNDER COVER	11361J	-	-	-
49	HV AIR CONDITIONING WIRE	821H2	See step 49	-	-
50	NO. 2 TRANSMISSION OIL COOLER HOSE ASSEMBLY	32930G	-	-	-
51	WIRE HARNESS CLAMP BRACKET	-	-	-	-
52	OIL PUMP WITH MOTOR ASSEMBLY	35300B	-	-	-
53	FLYWHEEL HOUSING SIDE COVER	11363A	-	-	-
54	FRONT FRAME ASSEMBLY	51100G	-	-	-
55	FRONT ENGINE MOUNTING INSULATOR	12361A	-	-	-
56	REAR ENGINE MOUNTING INSULATOR	12371A	-	-	-

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

Fig 8: Engine Assembly (For PHEV Model) Removal Components (8 Of 9)

Procedure		Part Name Code
57	HYBRID VEHICLE TRANSAXLE ASSEMBLY	30900	See step 57	-	-
58	TRANSMISSION INPUT DAMPER ASSEMBLY	31270	See step 58	-	-
59	FLYWHEEL SUB-ASSEMBLY	13405	See step 59	-	-
60	NO. 1 CRANKSHAFT POSITION SENSOR PLATE	19315	-	-	-
61	REMOVE ENGINE WIRE	82121	-	-	-
62	INSTALL ENGINE ASSEMBLY TO ENGINE STAND	-	See step 62	-	-
63	REMOVE ENGINE HANGERS	-	-	-	-

•

Non-reusable part

Precoated part

Fig 9: Engine Assembly (For PHEV Model) Removal Components (9 Of 9)

Procedure		Part Name Code
64	INVERTER RESERVE TANK ASSEMBLY	G910GB	-	-	-
65	ENGINE MOUNTING INSULATOR SUB-ASSEMBLY RH	12305	-	-	-
66	ENGINE MOUNTING SPACER	12341	-	-	-
67	ENGINE MOUNTING INSULATOR SUB-ASSEMBLY LH	12306	See step 67	-	-

*1	RADIATOR RESERVE TANK ASSEMBLY	*2	NO. 2 EARTH WIRE
*3	AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY	*4	ACCUMULATOR ASSEMBLY
*5	EARTH BOLT CAP	*6	NO. 1 INVERTER RESERVE TANK BRACKET