Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. 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*	Refer to INITIALIZATION [09/2023 - ]
Replacement of engine assembly Replacement of EGR valve assembly Gas leak from exhaust system is repaired	Inspection After Repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [12/2023 - ]
Replacement of ECM	Perform Vehicle Identification Number (VIN) registration	DTC is output	Refer to REGISTRATION [12/2023 - ]
Replacement of ECM	Update ECU security key	Vehicle Control History (RoB) are stored	Refer to UPDATE ECU SECURITY KEY [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 [12/2023 - ]
Replacement of service plug grip	High voltage fuse accumulated load history reset	DTCs are stored	Refer to UTILITY [12/2023 - ]
Replacement of hybrid vehicle transaxle assembly	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 [12/2023 - ]
Suspension parts	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 - ]
Tires	Initialization12 Tire Position Identification12	Tire Pressure Warning System	Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System) table below Refer to WORK PROCEDURE [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 - ]
Replacement of front bumper assembly*3	Front television camera view adjustment	Panoramic View Monitor System	Refer to CALIBRATION [09/2023 - ]
Replacement of front bumper assembly*3	Front television camera view adjustment	Advanced Park	Refer to CALIBRATION [09/2023 - ]
Front 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 - ]

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

*1: Also necessary after performing a tire rotation.

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

*3: 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

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

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 [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 Procedures are not Performed	Necessary Procedures	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 Procedures are not Performed	Necessary Procedures	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: Engine Assembly Removal Components (1 Of 13)

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	REAR ENGINE UNDER COVER LH	-	-	-	-
11	REAR ENGINE UNDER COVER RH	-	-	-	-
12	FRONT FENDER APRON SEAL LH	53737B	-	-	-
13	FRONT FENDER APRON SEAL RH	53736	-	-	-

Fig 2: Engine Assembly Removal Components (2 Of 13)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
14	FRONT FLOOR COVER LH	58166A	See step 14	-	-
15	FRONT FLOOR COVER RH	58165C	See step 15	-	-

Fig 3: Engine Assembly Removal Components (3 Of 13)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
16	FRONT BUMPER ASSEMBLY	-	-	-	-
17	FRONT BUMPER LOWER ABSORBER	52618	-	-	-
18	FRONT RADIATOR SIDE AIR GUIDE PLATE LH	16695A	-	-	-
19	FRONT RADIATOR SIDE AIR GUIDE PLATE RH	16691A	-	-	-
20	NO. 2 FRONT BUMPER REINFORCEMENT SUB-ASSEMBLY	52029C	-	-	-

Fig 4: Engine Assembly Removal Components (4 Of 13)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
21	DRAIN ENGINE COOLANT (for Engine)	-	-	See step 21	-
22	DRAIN COOLANT (for Inverter)	-	-	See step 22	-
23	DRAIN ENGINE OIL	-	-	See step 23	-
24	DRAIN HYBRID TRANSAXLE FLUID	-	-	See step 24	-
25	ELECTRIC HEATER SUB-ASSEMBLY	87101G	-	-	-

Fig 5: Engine Assembly Removal Components (5 Of 13)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
26	V-BANK COVER SUB-ASSEMBLY	11209	See step 26	-	-
27	HYBRID MOTOR CONTROL INVERTER ASSEMBLY	G92A0	-	-	-
28	FLOOR UNDER WIRE	821H1	See step 28	-	-
29	ENGINE WIRE	82121	See step 29	-	-
30	HEATER WATER HOSE D	87247D	-	-	-
31	HEATER WATER HOSE B	87247B	-	-	-

NO. 1 RELAY BLOCK COVER

Fig 6: Engine Assembly Removal Components (6 Of 13)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
32	HEATER WATER HOSE A	87247A	-	-	-
33	WIRE HARNESS CLAMP BRACKET	-	-	-	-
34	INVERTER WATER PUMP ASSEMBLY	G9040	See step 34	-	-
35	INVERTER RESERVE TANK SUB-ASSEMBLY	G910GB	-	-	-
36	NO. 4 WATER BY-PASS HOSE	16281N	-	-	-
37	NO. 1 RADIATOR HOSE	16571C	-	-	-
38	NO. 2 RADIATOR HOSE	16572D	-	-	-
39	NO. 1 COOLER REFRIGERANT DISCHARGE HOSE	88711	See step 39	-	-
40	SUCTION HOSE SUB-ASSEMBLY	88704	See step 40	-	-
41	NO. 1 FUEL HOSE	23801F	See step 41	-	-

*1	NO. 1 FUEL TUBE CLAMP	*2	NO. 3 INVERTER COOLING HOSE
*3	AIR FUEL RATIO SENSOR (for Bank 2 Sensor 1) CONNECTOR	-	-
•	Non-reusable part	-	-

Fig 7: Engine Assembly Removal Components (7 Of 13)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
42	FRONT EXHAUST PIPE ASSEMBLY	17410	See step 42	-	-
43	FRONT NO. 2 EXHAUST PIPE SUB-ASSEMBLY	17402	See step 43	-	-
44	FRONT EXHAUST PIPE SUB-ASSEMBLY	17401	See step 44	-	-
45	ENGINE UNDER COVER HEAT INSULATOR	51468B	See step 45	-	-

*1	NO. 23 TRACTION BATTERY BRACKET	-	-
•	Non-reusable part	-	-

Fig 8: Engine Assembly Removal Components (8 Of 13)

Procedure		Part Name Code
46	TRANSMISSION OIL COOLER AIR DUCT	32917A	-	-	-
47	NO. 1 TRANSMISSION OIL COOLER HOSE ASSEMBLY	32930F	-	-	-
48	NO. 6 INVERTER COOLING HOSE	G9236A	-	-	-
49	NO. 4 INVERTER COOLING HOSE AND NO. 5 INVERTER COOLING HOSE	-	See step 49	-	-
50	STEERING INTERMEDIATE SHAFT ASSEMBLY	45220	See step 50	-	-

EXHAUST SENSOR BRACKET

Fig 9: Engine Assembly Removal Components (9 Of 13)

Procedure		Part Name Code
51	FRONT DRIVE SHAFT ASSEMBLY	-	-	-	-
52	TIE ROD ASSEMBLY LH	45470	See step 52	-	-
53	TIE ROD ASSEMBLY RH	45460	See step 53	-	-
54	SUSPENSION TOWER DAMPER	48691E	See step 54	-	-
55	ENGINE ASSEMBLY WITH TRANSAXLE	-	See step 55	-	-

*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	NO. 2 ENGINE MOUNTING STAY RH
*7	COTTER PIN	-	-
•	Non-reusable part	-	-

Fig 10: Engine Assembly Removal Components (10 Of 13)

Procedure		Part Name Code
56	WIRE HARNESS	-	-	-	-
57	NO. 2 EGR PIPE	25612	See step 57	-	-
58	NO. 2 EGR PIPE GASKET	25629A	-	-	-
59	NO. 10 WATER BY-PASS HOSE AND NO. 11 WATER BY-PASS HOSE	-	-	-	-
60	NO. 6 WATER BY-PASS HOSE	16283	-	-	-
61	EGR VALVE ASSEMBLY	25620	-	-	-
62	EGR INLET GASKET	25628	-	-	-

*1	NO. 1 EGR PIPE	*2	EGR COOLER BRACKET
*3	EGR COOLER ASSEMBLY	*4	STUD BOLT
*5	NO. 9 WATER BY-PASS HOSE	*6	EGR VALVE GASKET
•	Non-reusable part	-	-

Fig 11: Engine Assembly Removal Components With Torque Specifications (11 Of 13)

Procedure		Part Name Code
63	INSTALL ENGINE HANGERS	-	See step 63	-	-
64	ENGINE WIRE	82121	-	-	-
65	HYBRID VEHICLE TRANSAXLE ASSEMBLY	30900	-	-	-
66	TRANSMISSION INPUT DAMPER ASSEMBLY	31270	See step 66	-	-
67	FLYWHEEL SUB-ASSEMBLY	13405	See step 67	-	-

	N.m (kgf/cm, ft.lbf): Specified torque	•	Non-reusable part
*	Precoated part	-	-

Fig 12: Engine Assembly Removal Components (12 Of 13)

Procedure		Part Name Code
68	MANIFOLD STAY	17118	See step 68	-	-
69	EXHAUST MANIFOLD ASSEMBLY RH	17140	See step 69	-	-
70	EXHAUST MANIFOLD TO HEAD GASKET	17173	-	-	-
71	NO. 2 EXHAUST MANIFOLD HEAT INSULATOR	17168	See step 71	-	-
72	NO. 2 MANIFOLD STAY	17119	See step 72	-	-
73	EXHAUST MANIFOLD ASSEMBLY LH	17150	See step 73	-	-
74	EXHAUST MANIFOLD TO HEAD GASKET LH	17173A	-	-	-
75	INSTALL ENGINE ASSEMBLY TO ENGINE STAND	-	See step 75	-	-
76	REMOVE ENGINE HANGERS	-	-	-	-

Fig 13: Engine Assembly Removal Components (13 Of 13)

Procedure		Part Name Code
77	ENGINE MOUNTING INSULATOR SUB-ASSEMBLY RH	12305	-	-	-
78	ENGINE MOUNTING SPACER	12341	-	-	-
79	ENGINE MOUNTING INSULATOR SUB-ASSEMBLY LH	12306	-	-	-

*1	RADIATOR RESERVE TANK ASSEMBLY	*2	NO. 2 GROUND WIRE
*3	SUCTION PIPE SUB-ASSEMBLY	*4	AIR CONDITIONER TUBE AND ACCESSORY ASSEMBLY