Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. 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 EGR cooler assembly removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure	Necessary Procedures	Effect/Inoperative Function When Necessary Procedures are 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*	Refer to INITIALIZATION [09/2023 - ]
Replacement of EGR valve assembly Gas leak from exhaust system is repaired	Inspection After Repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [12/2023 - ]

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

WARNING:

Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the service information.
Refer to PRECAUTION [09/2023 - ]

Fig 1: Charging System Precaution
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.

Fig 2: Wear Insulated Gloves
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Refer to BEFORE DISCONNECTING BATTERY [09/2023 - ]
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 Procedures are not Performed	Necessary Procedures	Link
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 Procedures are not Performed	Necessary Procedures	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: EGR Cooler Removal Components (1 Of 2)

Procedure		Part Name Code
1	DRAIN ENGINE COOLANT (for Engine)	-	-	See step 1	-
2	FRONT EXHAUST PIPE ASSEMBLY	17410	See step 2	-	-
3	FRONT NO. 2 EXHAUST PIPE SUB-ASSEMBLY	17402	See step 3	-	-
4	FRONT EXHAUST PIPE SUB-ASSEMBLY	17401	See step 4	-	-
5	ELECTRIC HEATER SUB-ASSEMBLY	87101G	-	-	-
6	V-BANK COVER SUB-ASSEMBLY	11209	See step 6	-	-
7	NO. 1 ENGINE COVER	12611	-	-	-
8	WIRE HARNESS	-	-	-	-

•

Non-reusable part

Fig 2: EGR Cooler Removal Components (2 Of 2)

Procedure		Part Name Code
9	NO. 2 EGR PIPE	25612	See step 9	-	-
10	NO. 2 EGR PIPE GASKET	25629A	-	-	-
11	NO. 10 WATER BY-PASS HOSE AND NO. 11 WATER BY-PASS HOSE	-	-	-	-
12	NO. 6 WATER BY-PASS HOSE	16283	-	-	-
13	EGR COOLER ASSEMBLY	25680	-	-	-
14	EGR INLET GASKET	25628	-	-	-

*1	NO. 1 EGR PIPE	*2	EGR COOLER BRACKET
*3	EGR VALVE ASSEMBLY	*4	STUD BOLT
*5	NO. 9 WATER BY-PASS HOSE	*6	EGR VALVE GASKET
•	Non-reusable part	-	-