Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. 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 automatic 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
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 - ]
	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 Switch battery type	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
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 - ]
Tire	ECU Data Initialization (When performing tire replacement after RoB code X2104 is output)	Dynamic Torque Control AWD System	Refer to CALIBRATION [03/2023 - ]
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 - ]
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.

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

The automatic transaxle assembly is very heavy. Be sure to follow the procedure described in the repair information, or the transmission jack may suddenly drop.

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 (-) battery terminal.

Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

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
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.	-

Fig 1: UB80F Automatic Transaxle Assembly Removal Components [03/2024 - ] (1 Of 6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
1	ENGINE ASSEMBLY WITH TRANSAXLE	-	-	-	-
2	FLYWHEEL HOUSING UNDER COVER	11361J	-	-	-
3	DRIVE PLATE AND TORQUE CONVERTER ASSEMBLY SETTING BOLT	32101A	See step 3	-	-
4	VACUUM HOSE	-	-	-	-
5	FLOW SHUTTING VALVE (NO. 1 WATER BY-PASS HOSE)	16261G	See step 5	-	-
6	WATER BY-PASS HOSE ASSEMBLY	16260	See step 6	-	-
7	BREATHER PLUG HOSE	35104V	See step 7	-	-
8	STEERING GEAR HEAT INSULATOR	45319	-	-	-
9	WIRE HARNESS	-	See step 9	-	-
10	FLYWHEEL HOUSING SIDE COVER	11363A	-	-	-
11	STARTER ASSEMBLY	28100	-	-	-

*1	BREATHER PLUG SUB-ASSEMBLY	*2	NO. 2 ENGINE WIRE
*3	TRANSMISSION BREATHER CLAMP	*4	HOSE CLAMP
*a	BLACK: x 1 SILVER: x 5	-	-
*	Precoated part	-	-

Fig 2: UB80F Automatic Transaxle Assembly Removal Components With Torque Specifications [03/2024 - ] (2 Of 6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
12	FUEL DELIVERY GUARD	23285A	-	-	-
13	INSTALL ENGINE HANGERS	-	See step 13	-	-
14	FRONT FRAME ASSEMBLY	51100G	-	-	-
15	FRONT ENGINE MOUNTING BRACKET	12311A	-	-	-
16	ENGINE MOUNTING INSULATOR LH	12372A	-	-	-
17	REAR ENGINE MOUNTING INSULATOR	12371A	-	-	-
18	REAR ENGINE MOUNTING BRACKET SUB-ASSEMBLY	12303	-	-	-

Fig 3: UB80F Automatic Transaxle Assembly Removal Components [03/2024 - ] (3 Of 6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
19	AUTOMATIC TRANSAXLE ASSEMBLY	30500	See step 19	-	-

Fig 4: UB80F Automatic Transaxle Assembly Removal Components [03/2024 - ] (4 Of 6)

Callout - Procedure		Part Name Code
20	OUTLET NO. 1 OIL COOLER HOSE	32942	See step 20	-	-
21	INLET NO. 1 OIL COOLER HOSE	32941	See step 21	-	-
22	NO. 1 OIL COOLER TUBE SUB-ASSEMBLY WITHOUT HOSE	32907C	See step 22	-	-
23	TRANSMISSION OIL COOLER	33493A	-	-	-

Fig 5: UB80F Automatic Transaxle Assembly Removal Components [03/2024 - ] (5 Of 6)

Callout - Procedure		Part Name Code
24	TRANSFER ASSEMBLY	36100	-	-	-
25	TRANSFER AND TRANSAXLE SETTING STUD BOLT	36100A	See step 25	-	-

•

Non-reusable part

Precoated part

Fig 6: UB80F Automatic Transaxle Assembly Removal Components [03/2024 - ] (6 Of 6)

Callout - Procedure		Part Name Code
26	TRANSMISSION CASE PLUG ASSEMBLY	35150	-	-	-
27	WIRE HARNESS CLAMP BRACKET	-	-	-	-
28	TORQUE CONVERTER ASSEMBLY	32000	See step 28	-	-
29	INSPECT TORQUE CONVERTER ASSEMBLY	32000	-	-	See step 29
30	INSPECT DRIVE PLATE AND RING GEAR SUB-ASSEMBLY	32101	-	-	See step 30

*A	Type A	*B	Type B
*1	O-RING	-	-
•	Non-reusable part	-	-