Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 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 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
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*4	Refer to INITIALIZATION [10/2022 - ]
Replacement of ECM	Perform Vehicle Identification Number (VIN) 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 - ]
	Heavy Knock History Save history Write history	-	Refer to REGISTRATION [10/2022 - ]
	Code registration	Engine start function	Refer to REGISTRATION [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 starter assembly*1	Clear the number of starter operations	Stop and Start System	Refer to REGISTRATION [10/2022 - ]
Replacement of battery	Integrated current value initialization	Stop and Start System	Refer to REGISTRATION [10/2022 - ]
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 [10/2022 - ] Registration: Refer to REGISTRATION [10/2022 - ]
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 [10/2022 - ]
Tires	for Gasoline Model AWD ECU Data Initialization (When Preforming tire replacement after RoB code X2104 is output)	Dynamic Torque Control AWD System	Refer to CALIBRATION [10/2022 - ]
	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 [10/2022 - 08/2023] , or refer to WORK PROCEDURE [08/2023 - ]
	Rear television camera assembly optical axis (Back camera position setting)*7	Parking Assist Monitor System	Refer to CALIBRATION [10/2022 - ]
	Parking assist ECU initialization*7	Panoramic View Monitor System	Refer to CALIBRATION [10/2022 - ]
	Parking assist ECU initialization*7	Advanced Park	Refer to CALIBRATION [10/2022 - ]
Front 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 [10/2022 - ]
Replacement of front bumper assembly*3	Front television camera view adjustment	Panoramic View Monitor System	Refer to CALIBRATION [10/2022 - ]
Replacement of front bumper assembly*3	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 (w/Automatic Headlight Beam Level Control System)	Refer to INITIALIZATION [10/2022 - ]

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

*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.

*7: 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

The automatic transaxle assembly is very heavy. Be sure to follow the procedure described in the appropriate service 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 [10/2022 - ]
If automatic transaxle assembly parts are replaced, refer to Parts Replacement Compensation Table to determine if any additional operations are necessary.
Refer to PRECAUTION [10/2022 - ]

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
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 [10/2022 - ]
Front Camera System	Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.	Refer to INITIALIZATION [10/2022 - ]
Adaptive High Beam System
Lighting System (w/ Automatic Headlight Beam Level Control System)

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 standard position is recognized.	-

COMPONENTS (REMOVAL)

Fig 1: Automatic Transaxle Assembly Removal Components (1 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
1	FLYWHEEL HOUSING UNDER COVER	11361J	-	-	-
2	DRIVE PLATE AND TORQUE CONVERTER ASSEMBLY SETTING BOLT	32101A	See step 2	-	-

*a	BLACK COLOR: x 1 SILVER COLOR: x 5	-	-
*	Precoated part	-	-

Fig 2: Automatic Transaxle Assembly Removal Components (2 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
3	FLYWHEEL HOUSING SIDE COVER	11363A	-	-	-
4	STARTER ASSEMBLY	28100	-	-	-
5	VACUUM HOSE SUB-ASSEMBLY	17308B	-	-	-
6	TRANSMISSION BREATHER HOSE SUB-ASSEMBLY	35012	-	-	-
7	ENGINE WIRE	82121	See step 7	-	-

*A	for UA81E	*B	for UA81F
*1	NO. 2 ENGINE WIRE	-	-

Fig 3: Automatic Transaxle Assembly Removal Components (3 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
8	FRONT FRAME ASSEMBLY	51100G	-	-	-

Fig 4: Automatic Transaxle Assembly Removal Components (4 Of 8)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
9	REAR ENGINE MOUNTING INSULATOR	12371A	-	-	-
10	AUTOMATIC TRANSAXLE ASSEMBLY	30500	See step 10	-	-
11	TORQUE CONVERTER ASSEMBLY	32000	-	-	-

for UA81E

for UA81F

Fig 5: Automatic Transaxle Assembly Removal Components (5 Of 8)

Procedure		Part Name Code
12	NO. 1 AUTOMATIC TRANSMISSION OIL COOLER TUBE CLAMP	32923B	-	-	-
13	INLET NO. 1 OIL COOLER HOSE	32941	See step 13	-	-
14	OUTLET NO. 1 OIL COOLER HOSE	32942	See step 14	-	-
15	TRANSMISSION OIL COOLER	33493A	See step 15	-	-
16	OIL COOLER BRACKET	32913	-	-	-
17	FRONT ENGINE MOUNTING BRACKET	12311A	-	-	-
18	ENGINE MOUNTING INSULATOR LH	12372A	-	-	-
19	PROPELLER SHAFT HEAT INSULATOR	37117B	-	-	-
20	REAR ENGINE MOUNTING BRACKET SUB-ASSEMBLY	12303	-	-	-

for UA81E

for UA81F

Fig 6: Automatic Transaxle Assembly Removal Components (6 Of 8)

Procedure		Part Name Code
21	TRANSFER ASSEMBLY	36100	-	-	-

for UA81F

Fig 7: Automatic Transaxle Assembly Removal Components (7 Of 8)

Procedure		Part Name Code
22	TRANSMISSION CASE PLUG ASSEMBLY	35150	-	-	-
23	WIRE HARNESS CLAMP BRACKET	-	-	-	-
24	TRANSMISSION BREATHER HOSE SUB-ASSEMBLY	35012	See step 24	-	-
25	UPPER TRANSAXLE CASE COVER	35151A	-	-	-

*A	for AISIN Made	*B	for TMMWV Made
*1	O-RING	*2	BREATHER PLUG SUB-ASSEMBLY
•	Non-reusable part	-	-

Fig 8: Automatic Transaxle Assembly Removal Components (8 Of 8)

Procedure		Part Name Code
26	TRANSFER AND TRANSAXLE SETTING STUD BOLT	36100A	See step 26	-	-
27	INSPECT TORQUE CONVERTER ASSEMBLY	32000	-	-	See step 27
28	INSPECT DRIVE PLATE AND RING GEAR SUB-ASSEMBLY	32101	-	-	See step 28

*A	for UA81F	-	-
•	Non-reusable part	*	Precoated part