Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during 4WD ECU 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*1	Refer to INITIALIZATION [09/2023 - ]
Replacement of fold seat control ECU*2	Initialize fold seat control ECU	Rear Power Seat Control System	Refer to INITIALIZATION [09/2023 - ]
Replacement of 4WD ECU assembly	1. ECU Data Save (ECU being replaced)	Dynamic Torque Control AWD System	Refer to CALIBRATION [09/2023 - ]
	2. ECU Configuration (New ECU)	Vehicle Control History (RoB) are stored	Refer to ECU CONFIGURATION [09/2023 - ]
	3. ECU Data Write (When replacing 4WD ECU assembly) (New ECU)	Dynamic Torque Control AWD System	Refer to CALIBRATION [09/2023 - ]

*1: When "[Parking Support Brake System icon] System Stopped. See Owner's Manual" is displayed on the multi-information display.*2: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.

WARNING:

Be sure to read Precaution thoroughly before servicing.

Fig 1: SRS Airbag System Precaution
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Refer to PRECAUTION [09/2023 - ]
Wear protective gloves. Sharp areas on the parts may injure your hands.

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 (-) 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 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 [09/2023 - ]
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 Procedure not Performed	Necessary Procedure	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: 4WD Control ECU Removal Components (1 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
1	PRECAUTION	-	See step 1	-	-
2	NEGATIVE BATTERY TERMINAL	-	-	-	-
3	REAR NO. 2 SEAT ASSEMBLY	-	-	-	-
4	REAR OUTER SEAT TRACK BRACKET COVER LH	72138M	-	-	-
5	REAR DOOR SCUFF PLATE LH	67918A	-	-	-
6	REAR DOOR OPENING TRIM WEATHERSTRIP LH	62332C	-	-	-

Fig 2: 4WD Control ECU Removal Components (2 Of 3)

Procedure		Part Name Code
7	REAR FLOOR FINISH PLATE	58387B	-	-	-
8	CENTER PILLAR LOWER GARNISH BELT HOLE COVER LH	73296A	-	-	-
9	REAR SEAT OUTER BELT ASSEMBLY LH	73370E	-	-	-
10	DECK SIDE TRIM COVER LH	64715C	-	-	-
11	REAR NO. 2 SEAT OUTER BELT ASSEMBLY LH	73570	-	-	-
12	DECK TRIM POCKET COVER	64974	See step 12	-	-
13	NO. 1 LUGGAGE COMPARTMENT TRIM HOOK	64725F	-	-	-
14	ROPE HOOK	66311	See step 14	-	-
15	ROPE HOOK ASSEMBLY	66310H	See step 15	-	-
16	DECK TRIM SIDE PANEL ASSEMBLY LH	64740C	-	-	-

for LH Side

Fig 3: 4WD Control ECU Removal Components (3 Of 3)

Procedure		Part Name Code
17	4WD ECU ASSEMBLY	89630A	-	-	-