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 engine unit 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
Battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane Control System	Refer to INITIALIZATION [06/2018 - 09/2022]
		Pre-collision System
		Lighting System (w/ AFS) (EXT)
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 [01/2019 - 09/2019]
	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]
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	Refer to REGISTRATION [01/2019 - 09/2019]
Replacement of ECM*2	Code registration (Immobiliser system)	Engine start	Refer to REGISTRATION [01/2019 - 09/2019]
Replacement of throttle body assembly Replacement of engine assembly Replacement of cylinder head sub-assembly Replacement of camshaft timing gear assembly Replacement of camshaft timing exhaust gear assembly Replacement of fuel injector assembly Replacement of spark plug Replacement of ignition coil assembly Gas leak from exhaust system is repaired Replacement of knock control sensor Replacement of engine coolant temperature sensor Replacement of continuously variable valve lift controller assembly	Inspection After Repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [01/2019 - 11/2022]
Suspension, tires, etc. (The vehicle height changes because of suspension or tire replacement)	Perform headlight ECU sub-assembly LH initialization	Lighting system (w/ AFS) (EXT)	Refer to INITIALIZATION [06/2018 - 06/2021]
Front wheel alignment adjustment	Perform "Reset Memory". Perform acceleration sensor zero point calibration and store system information memorization.	VSC is disabled or malfunctions DTCs are output Slip indicator light illuminates ABS warning light illuminates	w/ Electric Parking Brake System: Refer to UTILITY [06/2018 - 09/2022] w/o Electric Parking Brake System: Refer to UTILITY [01/2019 - 03/2019]
CVT fluid	ATF thermal degradation estimate reset	The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly	Refer to INITIALIZATION [01/2019 - 11/2022] for K313

*1: w/ Smart Key System

*2: w/o Smart Key System

NOTE:

After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal. (for Audio and Visual System (for Gasoline Model))
After the engine switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal. (for Navigation System)