Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. 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
Replacement of ECM	Update ECU security key	Vehicle Control History (RoB) are stored	Refer to UPDATE ECU SECURITY KEY [11/2021 - ]
	Perform Vehicle Identification Number (VIN) registration	DTC is output	Refer to REGISTRATION [11/2021 - ]
	ECU configuration (Only necessary after replacement)	-	Refer to ECU CONFIGURATION [11/2021 - ]
	Switch Specification Information	Vehicle control history (RoB) [X263E] is stored	Refer to INITIALIZATION [11/2021 - ]
	Heavy knock history Save history Write history	-	Refer to REGISTRATION [11/2021 - ]
	Code registration	Engine start function	Refer to REGISTRATION [11/2021 - ]
Replacement of engine assembly Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [11/2021 - ]
Replacement of starter assembly*1	Clear the number of starter operations	Stop and Start System	Refer to REGISTRATION [11/2021 - ]
Replacement of battery	Integrated current value initialization	Stop and Start System	Refer to REGISTRATION [11/2021 - ]
Replacement of automatic transaxle assembly	Perform reset memory Input transaxle compensation code into ECM Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	Initialization: Refer to INITIALIZATION [11/2021 - ] Registration: Refer to REGISTRATION [11/2021 - ]
Replacement of ECM (If transaxle compensation code read from ECM)	Perform reset memory*2 Transfer transaxle compensation code Perform road test to allow ECM to learn
Replacement of ECM (If transaxle compensation code not read from ECM)	Perform reset memory*2 Reset transaxle compensation code Perform road test to allow ECM to learn
Replacement of automatic transaxle fluid	ATF thermal degradation estimate reset	The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly	Refer to INITIALIZATION [11/2021 - ]
Tires	Initialization56 Tire Position Identification56	Tire Pressure Warning System	Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System) table below Refer to WORK PROCEDURE [11/2021 - 03/2023]
	Rear television camera assembly optical axis (Back camera position setting)	Parking Assist Monitor System	Refer to CALIBRATION [11/2021 - ]
	Parking assist ECU initialization	Panoramic View Monitor System	Refer to CALIBRATION [11/2021 - 03/2024]
	ECU Data Initialization (When performing tire replacement after RoB code X2104 is output)	Dynamic Torque Control AWD System (for T24A-FTS, A25A-FKS (Type B))	Refer to CALIBRATION [11/2021 - 03/2023]
Wheel alignment adjustment	Perform reset memory 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 [11/2021 - ]
Steering intermediate shaft assembly*4	Automatic rack centering	-	Refer to AUTOMATIC RACK CENTERING [11/2021 - ]
Replacement of front bumper assembly*3	Front television camera view adjustment	Panoramic View Monitor System	Refer to CALIBRATION [11/2021 - 03/2024]
Suspension parts	Rear television camera assembly optical axis (Back camera position setting)	Parking Assist Monitor System	Refer to CALIBRATION [11/2021 - ]
	Parking assist ECU initialization	Panoramic View Monitor System	Refer to CALIBRATION [11/2021 - 03/2024]
	Perform headlight ECU sub-assembly LH initialization	Lighting System (w/ Automatic Headlight Beam Level Control System)	Refer to INITIALIZATION [11/2021 - 03/2022] , or refer to INITIALIZATION [03/2022 - ]

*1: When the starter assembly is replaced, "ST No. 1 relay" must be also replaced.

*2: Not necessary when ECM replaced with new one

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

*4: If matchmarks were not placed when removing parts related to steering operation, perform automatic rack centering.

*5: Also necessary after performing a tire rotation.

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

WARNING:

The engine assembly with transaxle is very heavy. Be sure to follow the procedure described in the repair 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 (-) battery terminal.
Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

HINT:

When the cable is disconnected / reconnected to the 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 (EXT)	Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.	Refer to INITIALIZATION [11/2021 - ]
Front Camera System
Adaptive High Beam System
Stop and Start System	Idle the engine for approximately 5 to 60 minutes or drive the vehicle until stop and start control is permitted.	Refer to PRECAUTION [11/2021 - 03/2023]

LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
E-latch System Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.	Refer to INITIALIZATION [11/2021 - ]
Power Back Door System	Reset back door close position	Refer to INITIALIZATION [11/2021 - ]
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 [11/2021 - 03/2023] (1 Of 12)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - 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	BATTERY	28800	-	-	-
5	ALIGN FRONT WHEELS FACING STRAIGHT AHEAD	-	See step 5	-	-
6	SECURE STEERING WHEEL	-	See step 6	-	-
7	FRONT WHEELS	-	-	-	-
8	FRONT FENDER FRONT SPLASH SHIELD LH	53896B	-	-	-
9	FRONT FENDER FRONT SPLASH SHIELD RH	53895B	-	-	-
10	NO. 1 ENGINE UNDER COVER	51441	-	-	-
11	NO. 2 ENGINE UNDER COVER ASSEMBLY	51420	-	-	-
12	FRONT FENDER APRON SEAL LH	53737B	-	-	-
13	FRONT FENDER APRON SEAL RH	53736	-	-	-

Fig 2: Engine Assembly Removal Components [11/2021 - 03/2023] (2 Of 12)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
14	FRONT SUSPENSION MEMBER DYNAMIC DAMPER	51227B	-	-	-
15	FRONT FLOOR COVER LH	58166A	See step 15	-	-
16	FRONT FLOOR COVER RH	58165C	See step 16	-	-

Fig 3: Engine Assembly Removal Components [11/2021 - 03/2023] (3 Of 12)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
17	FRONT BUMPER ASSEMBLY	-	-	-	-
18	FRONT BUMPER LOWER ABSORBER	52618	-	-	-
19	NO. 2 FRONT BUMPER REINFORCEMENT	52132A	-	-	-
20	DRAIN ENGINE COOLANT (for Engine)	-	-	See step 20	-
21	DRAIN COOLANT (for Intercooler)	-	-	See step 21	-
22	DRAIN ENGINE OIL	-	-	See step 22	-
23	DRAIN AUTOMATIC TRANSAXLE FLUID	-	-	See step 23	-
24	DRAIN TRANSFER OIL	-	-	See step 24	-

Fig 4: Engine Assembly Removal Components [11/2021 - 03/2023] (4 Of 12)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
25	NO. 1 ENGINE COVER SUB-ASSEMBLY	12601B	See step 25	-	-
26	INLET AIR CLEANER ASSEMBLY	17750A	-	-	-
27	AIR CLEANER ASSEMBLY	17700	-	-	-
28	NO. 2 VENTILATION HOSE	12262	-	-	-
29	AIR CLEANER HOSE ASSEMBLY	17880	-	-	-
30	ECM	89661	See step 30	-	-
31	BATTERY CLAMP SUB-ASSEMBLY	74404B	-	-	-

*1	NO. 2 ENGINE WIRE	*2	ENGINE ROOM MAIN WIRE
*3	CONNECTOR COVER	-	-

Fig 5: Engine Assembly Removal Components [11/2021 - 03/2023] (5 Of 12)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
32	FUEL VAPOR FEED HOSE ASSEMBLY	23820	-	-	-
33	VACUUM HOSE ASSEMBLY	44750	-	-	-
34	INLET HEATER WATER HOSE	87245	-	-	-
35	HEATER WATER HOSE	87246Y	-	-	-
36	FUEL TUBE SUB-ASSEMBLY	23902	See step 36	-	-
37	NO. 1 RADIATOR HOSE	16571C	-	-	-
38	NO. 2 RADIATOR HOSE	16572D	-	-	-

EFI FUEL PIPE CLAMP (Fuel Tube Sub-assembly Side)

Fig 6: Engine Assembly Removal Components [11/2021 - 03/2023] (6 Of 12)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
39	NO. 1 INTERCOOLER COOLING WATER HOSE	16551C	-	-	-
40	NO. 2 INTERCOOLER COOLING WATER HOSE	16552C	-	-	-
41	SUCTION HOSE SUB-ASSEMBLY	88704	See step 41	-	-
42	DISCHARGE HOSE SUB-ASSEMBLY	88703	See step 42	-	-
43	WIRE HARNESS	-	See step 43	-	-
44	NO. 5 WATER BY-PASS HOSE	16282F	-	-	-
45	STEERING INTERMEDIATE SHAFT ASSEMBLY	45220	See step 45	-	-

*1	NO. 1 RELAY BLOCK COVER	-	-
•	Non-reusable part	-	-

Fig 7: Engine Assembly Removal Components [11/2021 - 03/2023] (7 Of 12)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
46	FRONT SUSPENSION BRACE LOWER CENTER	53689	-	-	-
47	PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY	37100	-	-	-

Fig 8: Engine Assembly Removal Components With Torque Specifications [11/2021 - 03/2023] (8 Of 12)

Callout - Procedure		Part Name Code
48	FRONT DRIVE SHAFT ASSEMBLY	-	-	-	-
49	TIE ROD ASSEMBLY LH	45470	See step 49	-	-
50	TIE ROD ASSEMBLY RH	45460	See step 50	-	-
51	ENGINE ASSEMBLY WITH TRANSAXLE	-	See step 51	-	-
52	ENGINE MOUNTING BRACKET CAP	12353	See step 52	-	-
53	INSTALL ENGINE HANGERS	-	See step 53	-	-

*A	w/ Suspension Tower Damper	*B	for Nut Type A
*C	for Nut Type B	-	-
*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	WIRE HARNESS CLAMP BRACKET	*6	SUSPENSION TOWER DAMPER
*7	COTTER PIN	-	-
	N.m (kgf/cm, ft.lbf): Specified torque	•	Non-reusable part

Fig 9: Engine Assembly Removal Components [11/2021 - 03/2023] (9 Of 12)

Callout - Procedure		Part Name Code
54	FLYWHEEL HOUSING UNDER COVER	11361J	-	-	-
55	DRIVE PLATE AND TORQUE CONVERTER ASSEMBLY SETTING BOLT	32101A	See step 55	-	-
56	FLYWHEEL HOUSING SIDE COVER	11363A	-	-	-
57	STARTER ASSEMBLY	28100	-	-	-
58	VACUUM HOSE SUB-ASSEMBLY	17308B	-	-	-
59	BREATHER PLUG HOSE	35104V	-	-	-
60	WATER BY-PASS HOSE ASSEMBLY	16260	-	-	-
61	STEERING GEAR HEAT INSULATOR	45319	-	-	-
62	DISCONNECT ENGINE WIRE	82121	See step 62	-	-
63	FRONT FRAME ASSEMBLY	51100G	-	-	-
64	REAR ENGINE MOUNTING INSULATOR	12371A	-	-	-
65	FRONT ENGINE MOUNTING INSULATOR	12361	-	-	-
66	ENGINE MOUNTING INSULATOR LH	12372A	-	-	-

*1	NO. 2 ENGINE WIRE	-	-
*a	BLACK COLOR: x 1 SILVER COLOR: x 5	-	-
*	Precoated part	-	-

Fig 10: Engine Assembly Removal Components [11/2021 - 03/2023] (10 Of 12)

Callout - Procedure		Part Name Code
67	AUTOMATIC TRANSAXLE ASSEMBLY	30500	See step 67	-	-
68	DRIVE PLATE AND RING GEAR SUB-ASSEMBLY	32101	See step 68	-	-
69	NO. 1 CRANKSHAFT POSITION SENSOR PLATE	19315	-	-	-
70	REMOVE ENGINE WIRE	82121	-	-	-

*1	REAR DRIVE PLATE SPACER	-	-
•	Non-reusable part	*	Precoated part

Fig 11: Engine Assembly Removal Components [11/2021 - 03/2023] (11 Of 12)

Callout - Procedure		Part Name Code
71	V-RIBBED BELT	16361A	See step 71	-	-
72	GENERATOR ASSEMBLY	27060	See step 72	-	-
73	COMPRESSOR ASSEMBLY WITH PULLEY	88310	See step 73	-	-
74	V-RIBBED BELT TENSIONER ASSEMBLY	16620	See step 74	-	-
75	ENGINE ASSEMBLY TO ENGINE STAND	-	See step 75	-	-
76	REMOVE ENGINE HANGERS	-	-	-	-

Fig 12: Engine Assembly Removal Components [11/2021 - 03/2023] (12 Of 12)

Callout - Procedure		Part Name Code
77	INTERCOOLER RESERVE TANK ASSEMBLY	16640	-	-	-
78	ENGINE MOUNTING INSULATOR SUB-ASSEMBLY RH	12305	-	-	-
79	ENGINE MOUNTING SPACER	12341	-	-	-
80	ENGINE MOUNTING BRACKET SUB-ASSEMBLY LH	12304	-	-	-

*1	RADIATOR RESERVE TANK ASSEMBLY	*2	NO. 2 EARTH WIRE
*3	SUCTION PIPE SUB-ASSEMBLY	*4	AIR CONDITIONING TUBE ASSEMBLY
*5	INTERCOOLER RESERVE TANK BRACKET	-	-