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 fuel (engine room side) pump 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*	Refer to INITIALIZATION [09/2023 - ]
Replacement of fuel (engine room side) pump assembly Replacement of engine assembly Replacement of EGR valve assembly Gas leak from exhaust system is repaired Replacement of port fuel injector assembly Replacement of throttle body with motor assembly Cleaning the deposits from the throttle body with motor assembly	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:

Never perform work on fuel system components near any possible ignition sources.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Vaporized fuel could ignite, resulting in a serious accident.

Do not perform work on fuel system components without first disconnecting the cable from the negative (-) auxiliary battery terminal.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Sparks could cause vaporized fuel to ignite, resulting in a serious accident.

To prevent serious injury due to fuel spray from the high-pressure fuel lines, always discharge fuel system pressure before removing any fuel system components.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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
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: Fuel Pump (For High Pressure) Removal Components (1 Of 2)

Procedure		Part Name Code
1	PRECAUTION	-	See step 1	-	-
2	DISCHARGE FUEL SYSTEM PRESSURE	-	See step 2	-	-
3	DECK BOARD ASSEMBLY	58410B	-	-	-
4	BATTERY SERVICE HOLE COVER	58441L	-	-	-
5	DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL	-	-	-	-

Fig 2: Fuel Pump (For High Pressure) Removal Components (2 Of 2)

Procedure		Part Name Code
6	EXHAUST MANIFOLD ASSEMBLY RH	17140	-	-	-
7	FUEL PUMP PROTECTOR	23214A	-	-	-
8	INTAKE MANIFOLD	17111	-	-	-
9	NO. 1 FUEL HOSE	23801F	See step 9	-	-
10	NO. 1 FUEL PIPE SUB-ASSEMBLY	23801P	See step 10	-	-
11	FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY	23100X	-	-	-
12	FUEL PUMP SPACER GASKET	23224D	-	-	-
13	FUEL PUMP LIFTER ASSEMBLY	23470	-	-	-

*1	FUEL PUMP LIFTER GUIDE	-	-
•	Non-reusable part	-	-