Caution / Notice / Hint

WARNING: This page is about a different car, the 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 TCM 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 TCM	Possible to read transmission compensation code A/T Code Registration A/T Code Registration (Read Compensation Code) A/T Code Registration (Register Compensation Code (Automatic Input)) K0/WSC Learning Value Registration Read Learning Value Write Learning Value WSC Deterioration Estimate Registration Read Estimate Value Write Estimate Value Road Test	Large shift shock Engine overruns Large shock when the engine is started and stopped Unintended engine stall	for Registration: Refer to REGISTRATION [09/2023 - ] for Initialization: Refer to INITIALIZATION [09/2023 - ]
Replacement of TCM	Impossible to read transmission compensation code A/T Compensation Code Reset K0/WSC Information Restoration Compensation Code Restoration Learning Value Restoration Road Test	Large shift shock Engine overruns Large shock when the engine is started and stopped Unintended engine stall	Refer to INITIALIZATION [09/2023 - ]

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

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 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 Procedure 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: TCM Removal Components

Procedure		Part Name Code
1	A/T CODE REGISTRATION	-	-	-	See step 1
2	K0/WSC LEARNING VALUE REGISTRATION	-	-	-	See step 2
3	PRECAUTION	-	See step 3	-	-
4	DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL	-	-	-	-
5	TCM	89530C	See step 5	-	-
6	NO. 1 TCM BRACKET	89539M	-	-	-