Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. 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 floor under wire 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 - ]

*: 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 appropriate service information .

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Refer to PRECAUTION [09/2023 - ]

If the correct procedures are not followed according to the instructions in the appropriate service information , there is a danger of electric shock from the high voltage circuits.

To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Be sure to wear insulating gloves when working on high voltage wiring or components.
If work is performed without wearing insulating gloves, there is a danger of electric shock.
Do not allow water to contact the HV supply battery assembly.

To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.

The fuel tank sub-assembly is very heavy. Be sure to follow the procedure described in the appropriate service information , or the fuel tank sub-assembly may fall off the engine lifter.

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 Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.	Refer to INITIALIZATION [09/2023 - ]
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 [09/2023 - ]
Air Conditioning System	After the ignition switch is turned to ON, the servo motor and cooler expansion valve standard position is recognized.	-

COMPONENTS (REMOVAL)

Fig 1: Frame Wire (For PHEV Model) Removal Components (1 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
1	PRECAUTION	-	See step 1	-	-
2	FUEL TANK SUB-ASSEMBLY	77001A	-	-	-
3	FRONT NO. 2 EXHAUST PIPE SUB-ASSEMBLY	17402	-	-	-
4	EXHAUST MANIFOLD ASSEMBLY RH	17140	-	-	-

Fig 2: Frame Wire (For PHEV Model) Removal Components (2 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
5	SERVICE PLUG GRIP	G3834	-	-	-

Fig 3: Frame Wire (For PHEV Model) Removal Components With Torque Specifications (3 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
6	NO. 2 INVERTER PROTECTOR	G921F	-	-	-
7	CHECK TERMINAL VOLTAGE	-	See step 7	-	-
8	ENGINE ROOM MAIN WIRE	82111	See step 8	-	-
9	FLOOR UNDER WIRE	821H1	See step 9	-	-

*1	Connector Cover Assembly	-	-
	N.m (kgf/cm, ft.lbf): Specified torque	-	-

Fig 4: Frame Wire (For PHEV Model) Removal Components (4 Of 9)

Procedure		Part Name Code
10	REAR NO. 1 SEAT ASSEMBLY	-	-	-	-
11	REAR NO. 2 SEAT ASSEMBLY	-	-	-	-
12	REAR CONSOLE BOX ASSEMBLY	58910C	-	-	-

Fig 5: Frame Wire (For PHEV Model) Removal Components (5 Of 9)

Procedure		Part Name Code
13	HV SUPPLY BATTERY ASSEMBLY	G9510	-	-	-
14	CHARCOAL CANISTER ASSEMBLY	77740	-	-	-
15	CHARCOAL CANISTER BASE BRACKET	77751	-	-	-

Fig 6: Frame Wire (For PHEV Model) Removal Components (6 Of 9)

Procedure		Part Name Code
16	JUNCTION BLOCK COVER	77751	See step 16	-	-
17	NO. 3 HIGH VOLTAGE FLOOR UNDER WIRE	-	See step 17	-	-
18	FLOOR UNDER WIRE	821H1	See step 18	-	-

*1	FLOOR WIRE	*2	WIRING HARNESS CLAMP BRACKET
*3	NO. 3 CONSOLE BOX MOUNTING BRACKET	*4	FRONT FLOOR CARPET ASSEMBLY
*5	NO. 1 REAR FLOOR SILENCER	-	-

Fig 7: Frame Wire (For PHEV Model) Removal Components (7 Of 9)

Procedure		Part Name Code
19	REAR SUSPENSION MEMBER SUB-ASSEMBLY	51206A	-	-	-

Fig 8: Frame Wire (For PHEV Model) Removal Components (8 Of 9)

Procedure		Part Name Code
20	FRONT NO. 1 FLOOR HEAT INSULATOR SUB-ASSEMBLY	58041A	See step 20	-	-
21	FLOOR UNDER WIRE	821H1	See step 21	-	-
22	WIRE HARNESS PROTECTOR COVER	-	See step 22	-	-
23	WIRE HARNESS CLAMP BRACKET	-	See step 23	-	-

*1	UPPER NO. 4 RELAY BLOCK COVER	*2	STUD CLAMP
*3	NO. 1 TERMINAL CAP	*4	HV SOCKET INVERTER WIRE
•	Non-reusable part	-	-

Fig 9: Frame Wire (For PHEV Model) Removal Components (9 Of 9)

Procedure		Part Name Code
24	UPPER INVERTER COVER SUB-ASSEMBLY	G9022B	See step 24	-	-
25	CHECK TERMINAL VOLTAGE	-	See step 25	-	-
26	NO. 3 HIGH VOLTAGE FLOOR UNDER WIRE	-	See step 26	-	-