Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.

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 [06/2018 - ]
	for K121 ECU configuration	-	Refer to ECU CONFIGURATION [09/2022 - ]
	Update ECU security key	Vehicle Control History (RoB) are stored	Refer to UPDATE ECU SECURITY KEY [09/2022 - ]
	ECU communication ID registration (Immobiliser system)	Engine start function	Refer to REGISTRATION [11/2022 - ]
	for K120 Perform reset memory CVT oil pressure calibration Perform road test to allow TCM to learn	Large shift shock Deterioration of fuel efficiency	Initialization: Refer to INITIALIZATION [11/2022 - 09/2024] Registration: Refer to REGISTRATION [06/2018 - 09/2024]
	for K121 Transfer transaxle compensation code4 Reset transaxle compensation code5 CVT oil pressure calibration Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	Initialization: Refer to INITIALIZATION [03/2023 - ] Registration: Refer to REGISTRATION [03/2023 - ]
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 [11/2022 - ]
Replacement of ECM*2	Code registration (Immobiliser system)	Engine start Telematics System	Refer to REGISTRATION [11/2022 - ]

*1: w/ Smart Key System

*2: w/o Smart Key System

*3: w/ Steering Lock Function

*4: If transaxle compensation code read from ECM

*5: If transaxle compensation code not read from ECM

NOTE:

If the ECM has been struck or dropped, replace it.

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
Front Camera System	Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.	Refer to INITIALIZATION [11/2022 - ]

LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Power Door Lock Control System Back door opener*1	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.	Refer to INITIALIZATION [11/2022 - ]

*1: for Hatchback