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 HV supply stack sub-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 - ]
HV supply stack sub-assembly	Battery status info update Battery diagnosis	HV battery status information cannot be updated	Refer to UTILITY [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 appropriate service information .

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Refer to PRECAUTION [09/2023 - ]

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

The hybrid system has high-voltage circuits. Accidents, such as electric shock, or electric leaks may result if the hybrid system is not operated in a correct manner. Make sure to follow the correct procedure.
When disposing of an HV supply battery assembly or HV supply stack sub-assembly, make sure to return them through an authorized collection agent who is capable of handling them safely.
Before returning an HV supply stack sub-assembly, make sure to perform a recovery inspection.
Make a note of the output DTCs as some of them may be necessary for "Recovery Inspection" of the HV supply battery assembly and HV supply stack sub-assemblies.

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: HV Battery Stack (For PHEV Model) Removal Components (1 Of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code
1	READ VALUE USING GTS	-	See step 1	-	-
2	NO. 2 TRACTION BATTERY DEVICE BOX ASSEMBLY	G3860	-	-	-
3	NO. 2 TRACTION BATTERY COOLER TUBE	G96N2	See step 3	-	-
4	NO. 1 TRACTION BATTERY COOLER TUBE	G96N1	See step 4	-	-

*1	O-RING	-	-
•	Non-reusable part		Compressor oil ND-OIL 11 or equivalent

Fig 2: HV Battery Stack (For PHEV Model) Removal Components (2 Of 4)

Procedure		Part Name Code
5	NO. 14 TRACTION BATTERY BRACKET	G963E	See step 5	-	-

Traction battery plug cable

WIRE HARNESS CLAMP

Fig 3: HV Battery Stack (For PHEV Model) Removal Components (3 Of 4)

Procedure		Part Name Code
6	NO. 5 TRACTION BATTERY CABLE (NO. 2 HV SUPPLY STACK SUB-ASSEMBLY)	G9509	See step 6	-	-
7	NO. 1 HV SUPPLY STACK SUB-ASSEMBLY	G9508	See step 7	-	-
8	NO. 3 HV SUPPLY STACK SUB-ASSEMBLY	G950A	See step 8	-	-
9	NO. 2 HV SUPPLY STACK SUB-ASSEMBLY	G9509	See step 9	-	-
10	NO. 4 HV SUPPLY STACK SUB-ASSEMBLY	G950B	See step 10	-	-
11	WIRE HARNESS CLAMP	-	See step 11	-	-

Fig 4: HV Battery Stack (For PHEV Model) Removal Components (4 Of 4)

Procedure		Part Name Code
12	NO. 21 TRACTION BATTERY BRACKET	G963M	-	-	-
13	NO. 1 TRACTION BATTERY COOLER CONDUCTOR	04G9N	-	-	-
14	NO. 1 TRACTION BATTERY COOLER SHEET	G96NA	-	-	-
15	NO. 1 TRACTION BATTERY HEATER	04G9H	-	-	-
16	NO. 2 TRACTION BATTERY HEATER	04G9HA	-	-	-
17	PERFORM RECOVERY INSPECTION	-	See step 17	-	-

*a	Parts requiring replacement with new ones when replacing the HV supply stack sub-assembly	-	-
•	Non-reusable part		Compressor oil ND-OIL 11 or equivalent