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 camshaft 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 Replacement of camshaft timing gear assembly Replacement of camshaft (for intake or exhaust camshaft) Replacement of camshaft timing exhaust gear assembly Replacement of direct fuel injector assembly Replacement of fuel (engine room side) pump assembly (for high pressure side) Replacement of ignition coil assembly	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 [03/2024 - ]
	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 [03/2024 - ]
	Parking assist ECU initialization	Advanced Park	Refer to CALIBRATION [03/2024 - ]
	ECU Data Initialization (When performing tire replacement after RoB code X2104 is output)	Dynamic Torque Control AWD System	Refer to CALIBRATION [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 [03/2024 - ]
Replacement of front bumper assembly*3	Front television camera view adjustment	Advanced Park	Refer to CALIBRATION [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 [03/2024 - ]
	Parking assist ECU initialization	Advanced Park	Refer to CALIBRATION [03/2024 - ]
	Perform headlight ECU sub-assembly LH initialization	Lighting System (w/ Automatic Headlight Beam Level Control System)	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.

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 (-) battery terminal.
Refer to INSPECTION MODE PROCEDURE [11/2021 - ]
This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.
Refer to PRECAUTION [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 [03/2024 - ]

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: Camshaft Removal Components [03/2024 - ] (1 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
1	INSTALL ENGINE ASSEMBLY TO ENGINE STAND	-	See step 1	-	-
2	ENGINE HANGERS	-	-	-	-
3	NO. 2 ENGINE COVER SUB-ASSEMBLY	12602D	-	-	-
4	PURGE VALVE (PURGE VSV)	25860D	-	-	-
5	NO. 1 VENTILATION PRESSURE SENSOR HOSE	12266B	-	-	-
6	AIR TUBE ASSEMBLY	17360A	See step 6	-	-
7	NO. 2 FUEL VAPOR FEED HOSE	23827D	-	-	-
8	VACUUM REGULATING VALVE ASSEMBLY	25819	-	-	-
9	COMPRESSOR INLET ELBOW SUB-ASSEMBLY	17203B	See step 9	-	-
10	NO. 2 TURBO WATER HOSE	16285	-	-	-
11	NO. 3 TURBO WATER HOSE	16286	-	-	-
12	WATER OUTLET STAY	16337A	-	-	-

*1	VACUUM HOSE SUB-ASSEMBLY	*2	AIR TUBE SUPPORT
•	Non-reusable part	-	-

Fig 2: Camshaft Removal Components [03/2024 - ] (2 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
13	FUEL TUBE SUB-ASSEMBLY	23901	See step 13	-	-
14	NO. 1 FUEL PIPE SUB-ASSEMBLY	23801P	See step 14	-	-
15	FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY	23100X	See step 15	-	-
16	FUEL PUMP SPACER GASKET	23224D	-	-	-
17	FUEL PUMP LIFTER ASSEMBLY	23470	-	-	-

*1	FUEL PUMP SPACER	-	-
•	Non-reusable part	-	-

Fig 3: Camshaft Removal Components [03/2024 - ] (3 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
18	IGNITION COIL ASSEMBLY	19500	See step 18	-	-
19	CONVERTER WITH CATALYST ASSEMBLY	17400M	-	-	-
20	EXHAUST PIPE HEAT INSULATOR	17435B	-	-	-
21	WATER BY-PASS HOSE	16261	-	-	-
22	WATER BY-PASS PIPE SUB-ASSEMBLY	16206	-	-	-
23	WATER BY-PASS GASKET	16347D	-	-	-
24	NO. 1 HEAT INSULATOR BRACKET	17163	-	-	-

*1	NO. 2 TURBO INSULATOR	-	-
•	Non-reusable part	-	-

Fig 4: Camshaft Removal Components [03/2024 - ] (4 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
25	OIL PRESSURE CONTROL VALVE ASSEMBLY	15250	See step 25	-	-
26	CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side)	15370	See step 26	-	-
27	CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side)	15370	See step 27	-	-
28	CAM TIMING OIL CONTROL SOLENOID O-RING	15370A	See step 28	-	-
29	VACUUM PUMP ASSEMBLY	29300	-	-	-
30	NO. 1 VACUUM PUMP O-RING	29343	-	-	-

•

Non-reusable part

Precoated part

Fig 5: Camshaft Removal Components [03/2024 - ] (5 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
31	FUEL DELIVERY PIPE SUB-ASSEMBLY	23807	See step 31	-	-
32	DIRECT FUEL INJECTOR ASSEMBLY	23250E	See step 32	-	-
33	NOZZLE HOLDER CLAMP	23695A	-	-	-
34	NO. 3 FUEL INJECTOR BACK-UP RING	23258	See step 34	-	-
35	NO. 1 FUEL INJECTOR BACK-UP RING	23256	-	-	-
36	C-RING	-	-	-	-
37	INJECTOR VIBRATION INSULATOR	23291A	-	-	-
38	FUEL INJECTOR SEAL	23255A	See step 38	-	-

*1	O-RING	-	-
•	Non-reusable part	-	-

Fig 6: Camshaft Removal Components [03/2024 - ] (6 Of 8)

Callout - Procedure		Part Name Code
39	CRANKSHAFT PULLEY ASSEMBLY	13470	See step 39	-	-
40	CAMSHAFT POSITION SENSOR (for Intake Side)	11102A	See step 40	-	-
41	CAMSHAFT POSITION SENSOR (for Exhaust Side)	11102A	See step 41	-	-
42	CYLINDER HEAD COVER SUB-ASSEMBLY	11201	See step 42	-	-
43	SPARK PLUG TUBE GASKET	11193	See step 43	-	-
44	INJECTOR HOLDER SUB-ASSEMBLY	23095B	-	-	-
45	ENGINE MOUNTING BRACKET RH	12315A	See step 45	-	-
46	NO. 2 TIMING CHAIN COVER ASSEMBLY	11320B	See step 46	-	-
47	TIMING CHAIN CASE OIL SEAL	11301C	See step 47	-	-

*1	CRANKSHAFT PULLEY BOLT	*2	PLATE WASHER
•	Non-reusable part	*	Precoated part

Fig 7: Camshaft Removal Components [03/2024 - ] (7 Of 8)

Callout - Procedure		Part Name Code
48	SET NO. 1 CYLINDER TO TDC (COMPRESSION)	-	See step 48	-	-
49	OIL PUMP DRIVE CHAIN SUB-ASSEMBLY	13507A	See step 49	-	-
50	NO. 2 CHAIN VIBRATION DAMPER	13562	-	-	-
51	NO. 1 CHAIN TENSIONER ASSEMBLY	13540	See step 51	-	-
52	CHAIN TENSIONER SLIPPER	13559	-	-	-
53	CHAIN SUB-ASSEMBLY	13506	-	-	-
54	NO. 1 CHAIN VIBRATION DAMPER	13561	-	-	-
55	CAMSHAFT TIMING GEAR ASSEMBLY	13050	See step 55	-	-
56	CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY	13070A	See step 56	-	-
57	TIMING CHAIN COVER ASSEMBLY	11310	See step 57	-	-

*1	CHAIN TENSIONER PLATE	*2	CHAIN DAMPER SPRING
*3	OIL PUMP DRIVE SPROCKET	*4	OIL PUMP DRIVE SHAFT SPROCKET
*5	CRANKSHAFT TIMING GEAR OR SPROCKET	*6	INTAKE CAMSHAFT TIMING GEAR BOLT ASSEMBLY
*7	EXHAUST CAMSHAFT TIMING GEAR BOLT ASSEMBLY	-	-

Fig 8: Camshaft Removal Components [03/2024 - ] (8 Of 8)

Callout - Procedure		Part Name Code
58	FUEL PUMP LIFTER GUIDE	23477	See step 58	-	-
59	CAMSHAFT HOUSING SUB-ASSEMBLY	11103	See step 59	-	-
60	CAMSHAFT BEARING CAP	-	See step 60	-	-
61	INTAKE CAMSHAFT SUB-ASSEMBLY	13501A	-	-	-
62	EXHAUST CAMSHAFT SUB-ASSEMBLY	13502B	-	-	-
63	NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY	13801	-	-	-
64	VALVE LASH ADJUSTER ASSEMBLY	13750	-	-	-
65	VALVE STEM CAP	13716	-	-	-

*1	NO. 1 CAMSHAFT BEARING CAP	*2	NO. 2 CAMSHAFT BEARING CAP
*3	NO. 3 CAMSHAFT BEARING CAP	*4	NO. 4 CAMSHAFT BEARING CAP
*5	NO. 5 CAMSHAFT BEARING CAP	-	-