Caution / Notice / Hint

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, 2020 Toyota Corolla, and 2019 Toyota Corolla. 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 ECM 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
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on	Refer to REGISTRATION [01/2019 - 11/2022]
	ECU communication ID registration (Immobiliser system)	Engine start function	Refer to REGISTRATION [09/2022 - 11/2022]
	Reset memory Deceleration sensor zero point calibration CVT oil pressure calibration	Large shift shock Deterioration of fuel efficiency	Refer to INITIALIZATION [01/2019 - 11/2022] for K313
Replacement of ECM*1	Code registration (Smart Key System (for Gasoline Model, Start Function))	Wireless Door Lock Control System (for Gasoline Model with Smart Key System) Smart Key System (for Gasoline Model, Entry Function) Smart Key System (for Gasoline Model, Start Function) Steering lock function*3	Refer to REGISTRATION [09/2022 - 11/2022]
Replacement of ECM*2	Code registration (Immobiliser system)	Engine start	Refer to REGISTRATION [09/2022 - 11/2022]

*1: w/ Smart Key System

*2: w/o Smart Key System

*3: w/ Steering Lock Function

NOTE:

Perform the Vehicle Identification Number (VIN) registration when replacing the ECM.

Refer to REGISTRATION [01/2019 - 11/2022]

HINT:

When the cable is disconnected / reconnected to the 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
Pre-collision System (for TMMMS Made)	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.	Refer to INITIALIZATION [09/2022 - 11/2022]
Lane Tracing Assist System (for TMMMS Made)
Lane Departure Alert System (for TMMMS Made)