THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM1000000028K9J
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [11/2022 - ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ]

REGISTRATION

PROCEDURE

1. REPAIR INSTRUCTION

CAUTION:

As weak radio waves are emitted from the electrical key transmitter sub-assembly, if a pacemaker is being used, be sure to read the pacemaker instruction manual and the following.

People with implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should keep away from the Smart key system antennas. The radio waves may affect the operation of such devices. If necessary, the entry function can be disabled. Ask your dealer for details, such as the frequency of radio waves and timing of the emitted radio waves. Then, consult your doctor to see if you should disable the entry function.
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User of any electrical medical device other than implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should consult the manufacturer of the device for information about its operation under the influence of radio waves. Radio waves could have unexpected effects on the operation of such medical devices.
Ask your dealer for details for disabling the entry function.
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NOTICE:

PRECAUTION WHEN REPLACING PARTS

Code registration is necessary when any of the following parts is replaced with a new one. After replacing a part, any part that has performed registration cannot be returned.
- Certification ECU (smart key ECU assembly)
- ID code box (immobiliser code ECU)
- Steering lock ECU (steering lock actuator or upper bracket assembly)*1
- Electrical key transmitter sub-assembly
- Main body ECU (multiplex network body ECU)
- ECM
- DCM (telematics transceiver)*2
  - *1: for G16E-FTS (Manual Transaxle)
  - *2: for Remote Connect Compatible Type

PRECAUTION FOR REGISTRATION

Make sure that only 1 electrical key transmitter sub-assembly is in the cabin during registration procedures. If 2 or more electrical key transmitter sub-assemblies are in the cabin simultaneously, the electric waves will interfere with each other, preventing normal registration.
A maximum of 4 electrical key transmitter sub-assemblies can be registered (this includes any electrical key transmitter sub-assemblies registered when the vehicle was purchased).
If the battery is depleted during the electrical key transmitter sub-assembly registration procedure, there may be cases in which the electrical key transmitter sub-assembly cannot be registered again. Therefore, make sure to perform work with a sufficiently charged battery.
If any of the work times are exceeded, finish the procedure.
Do not disconnect the battery during the Registration.
Do not perform operations that create an electrical load such as operating the power windows.
If Smart Key System is canceled, registration cannot be performed.
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2. EXPLANATION OF IMMOBILISER KEY ID REGISTRATION PROCEDURE

(a) Addressing customer requests (perform work in chart below in order starting from left)

Customer Request/Condition	Undesignated key permanent erasure	All keys ID erasure (Smart code reset)	New key ID registration	Additional key ID registration
Refer to PROCEDURE	"5"	"6"	"3"	"4"
All electrical key transmitter sub-assemblies are lost	-			-
Registering additional electrical key transmitter sub-assembly	-	-	-
Making a lost electrical key transmitter sub-assembly unusable		-	-	-

(b) Addressing malfunctions 1 (perform work in chart below in order starting from left)

Certification ECU (smart key ECU assembly) malfunction

Condition (The number of the electrical key transmitter sub-assemblies customer has brought)	Undesignated key permanent erasure	Replace ID code box (immobiliser code ECU)	Replace steering lock ECU (steering lock actuator or upper bracket assembly)*1	New key ID registration	ECU code registration	ECU communication ID registration	Remote engine start and stop registration*2
Refer to PROCEDURE	"5"			"3"	"7"	"8"	"10"
All electrical key transmitter sub-assemblies	-	-	-		-	-
At least 1 electrical key transmitter sub-assembly (Key ID codes can be registered and cleared)		-	-		-	-
At least 1 electrical key transmitter sub-assembly (Key ID codes cannot be either registered or cleared)	-		-		-
All electrical key transmitter sub-assemblies are lost	-		-		-

*1: for G16E-FTS (Manual Transaxle)
*2: for Remote Connect Compatible Type

ID code box (immobiliser code ECU) malfunction

Condition

(The number of the electrical key transmitter sub-assemblies customer has brought)

Replace certification ECU (smart key ECU assembly)

Replace ID code box (immobiliser code ECU)

Replace steering lock ECU (steering lock actuator or upper bracket assembly)*1

New key ID registration

ECU code registration

ECU communication ID registration

Remote engine start and stop registration*2

Refer to PROCEDURE

"3"

"7"

"8"

"10"

At least 1 electrical key transmitter sub-assembly

All electrical key transmitter sub-assemblies are lost

*1: for G16E-FTS (Manual Transaxle)
*2: for Remote Connect Compatible Type

(d) for G16E-FTS (Manual Transaxle):

Addressing malfunctions 3 (perform work in chart below in order starting from left)

Steering lock ECU (steering lock actuator or upper bracket assembly) malfunction

Condition

(The number of the electrical key transmitter sub-assemblies customer has brought)

Replace certification ECU (smart key ECU assembly)

Replace ID code box (immobiliser code ECU)

Replace steering lock ECU (steering lock actuator or upper bracket assembly)

New key ID registration

ECU code registration

ECU communication ID registration

Remote engine start and stop registration*

Refer to PROCEDURE

"3"

"7"

"8"

"10"

At least 1 electrical key transmitter sub-assembly

All electrical key transmitter sub-assemblies are lost

*: for Remote Connect Compatible Type

(e) Addressing malfunctions 4 (perform work in chart below in order starting from left)

Electrical key transmitter sub-assemblies malfunction

Condition

(The number of the electrical key transmitter sub-assemblies customer has brought)

Undesignated key permanent erasure

All keys ID erasure (Smart code reset)

New key ID registration

Additional key ID registration

Refer to PROCEDURE

"5"

"6"

"3"

"4"

One or more electrical key transmitter sub-assembly that operates normally

All electrical key transmitter sub-assembly lost or any electrical key transmitter sub-assembly does not operate normally

(f) Addressing malfunctions 5 (perform work in chart below in order starting from left)

Malfunctioning ECU	Condition	Replace ECM	Replace main body ECU (multiplex network body ECU)	Replace DCM (telematics transceiver)*1	ECU code registration	ECU communication ID registration	Remote door lock and unlock registration*1	Remote engine start and stop registration*1
Refer to PROCEDURE		2 3			"7"	"8"	"9"	"10"
ECM	When replacing a new one*4		-	-	-	-	-	-
Main body ECU (multiplex network body ECU)	When replacing a new one*4	-		-		-		-
DCM (telematics transceiver)*1	When replacing a new one*4	-	-		-	-

*1: for Remote Connect Compatible Type
*2: for M20A-FKS
*3: for G16E-GTS
*4: Do not use this part that has been registered to another vehicle.

3. NEW KEY ID REGISTRATION

NOTICE:

When the certification ECU (smart key ECU assembly) is replaced, register all electrical key transmitter sub-assemblies used by the customer.
Registered electrical key transmitter sub-assemblies other than those registered during the certification ECU (smart key ECU assembly) replacement cannot be re-registered, and therefore they can no longer be used.
Immediately after replacing the certification ECU (smart key ECU assembly), the GTS item "Number of Registered Codes" should change to "0". If this item does not change to "0", the certification ECU (smart key ECU assembly) may be registered to another vehicle. A certification ECU (smart key ECU assembly) which is registered to another vehicle cannot be used.
When an error message is displayed on the GTS during New Key ID Registration, perform an operation check. If only the engine can be started and the entry lock/unlock and wireless lock/unlock does not operate, perform ECU Code Registration.
Also, if the same symptoms occur when registration is complete, perform ECU Code Registration.

If the engine does not start, refer to HOW TO PROCEED WITH TROUBLESHOOTING.

Click here

Process	Procedure	Time limit (seconds)
1. Start of registration	Ignition switch off. Connect the GTS to the DLC3. Turn the ignition switch to ON. NOTICE: The ignition switch can be turned to ON up to 40 times, and then cannot be turned to ON again. If the GTS is connected and started while turning on and off the front door courtesy light switch assembly on the driver door (at intervals of 1.5 seconds or less between on and off), the electrical key can be normally registered. The auto power off function may operate approximately 20 minutes after the ignition switch is turned to ON. Perform New Key ID Registration within 20 minutes of turning the ignition switch to ON. Turn the GTS on. Enter the following menus: Body Electrical / Smart Key / Utility / Smart Code Registration	-
2. Get Pass-Code	According to the display on the GTS, obtain the Pass-Code using online authentication or proxy authentication. NOTICE: After obtaining the Pass-Code, do not turn off the GTS until registration is completed. If the GTS is turned off before registration is completed, obtain the Pass-Code once more.	-
3. Confirmation of all registered electrical key transmitter sub-assemblies (When only the certification ECU (smart key ECU assembly) is replaced)	While facing the logo side of a registered electrical key transmitter sub-assembly toward the engine switch, hold the electrical key transmitter sub-assembly near engine switch. Confirm that the wireless buzzer sounds once (short beep). Repeat procedure 1 and 2 of this process for all the previously registered electrical key transmitter sub-assemblies. HINT: When performing the electrical key transmitter sub-assembly confirmation procedure the security indicator light comes on and remains on until all the electrical key transmitter sub-assemblies are confirmed.	30
4. Verification of unregistered electrical key transmitter sub-assembly	While facing the logo side of an unregistered electrical key transmitter sub-assembly toward the engine switch, hold the electrical key transmitter sub-assembly near the engine switch. Confirm that the wireless buzzer sounds twice (short beep). Repeat procedure 1 and 2 of this process for all electrical key transmitter sub-assemblies to register.	30
5. End of registration	Finish new key ID code registration.	-

4. ADDITIONAL KEY ID REGISTRATION

NOTICE:

If an electrical key transmitter sub-assembly has recently been registered, the new key registration warning message will be displayed on the multi-information display and cannot be cleared for 10 days.*
This message is displayed to inform the user that an electrical key transmitter sub-assembly has been registered and help prevent the vehicle from being stolen if the registration was unauthorized.

*: Display of the warning message will be suspended when any of the following conditions is met:
- The warning message has been displayed for 60 seconds.
- All of the doors are closed and locked.
- Ignition switch is turned to ON.
When an error message is displayed on the GTS during Additional Key ID Registration, perform an operation check. If only the engine can be started and the entry lock/unlock and wireless lock/unlock does not operate, perform ECU Code Registration.
Also, if the same symptoms occur when registration is complete, perform ECU Code Registration.

If the engine does not start, refer to HOW TO PROCEED WITH TROUBLESHOOTING.

Click here

Process	Procedure	Time limit (seconds)
1. Start of registration	Ignition switch off. Connect the GTS to the DLC3. Turn the ignition switch to ON. NOTICE: The ignition switch can be turned to ON up to 40 times, and then cannot be turned to ON again. If the GTS is connected and started while turning on and off the front door courtesy light switch assembly on the driver door (at intervals of 1.5 seconds or less between on and off), the electrical key can be normally registered. The auto power off function may operate approximately 20 minutes after the ignition switch is turned to ON. Perform Additional Key ID Registration within 20 minutes of turning the ignition switch to ON. Turn the GTS on. Enter the following menus: Body Electrical / Smart Key / Utility / Smart Code Registration	-
2. Get Pass-Code	According to the display on the GTS, obtain the Pass-Code using online authentication or proxy authentication. NOTICE: After obtaining the Pass-Code, do not turn off the GTS until registration is completed. If the GTS is turned off before registration is completed, obtain the Pass-Code once more.	-
3. Confirmation of registered electrical key transmitter sub-assemblies	While facing the logo side of a registered electrical key transmitter sub-assembly toward the engine switch, hold the electrical key transmitter sub-assembly near engine switch. Confirm that the wireless buzzer sounds once (short beep). HINT: When checking registered electrical key transmitter sub-assemblies, check using an electrical key transmitter sub-assembly that is registered to the vehicle.	30
4. Verification of unregistered electrical key transmitter sub-assembly	While facing the logo side of an unregistered electrical key transmitter sub-assembly toward the engine switch, hold the electrical key transmitter sub-assembly near the engine switch. Confirm that the wireless buzzer sounds twice (short beep). Repeat procedure 1 and 2 of this process for all electrical key transmitter sub-assemblies to register.	30
5. End of registration	Finish additional key ID code registration.	-

5. UNDESIGNATED KEY PERMANENT ERASURE

NOTICE:

If Undesignated Key Permanent Erasure is performed, previously registered electrical key transmitter sub-assemblies cannot be re-registered, and therefore they can no longer be used.

HINT:

Undesignated Key Permanent Erasure can be used to delete and disable all key IDs other than the electrical key transmitter sub-assemblies selected during "confirmation of registered electrical key transmitter sub-assemblies to keep (process No. 3)".

Process	Procedure	Time limit (seconds)
1. Start of erasure	Ignition switch off. Connect the GTS to the DLC3. Turn the ignition switch to ON. Turn the GTS on. Enter the following menus: Body Electrical / Smart Key / Utility / Undesignated Key Permanent Erasure Input the number of keys to keep and check that the number of electrical key transmitter sub-assemblies to delete is correct.	-
2. Get Pass-Code	According to the display on the GTS, obtain the Pass-Code using online authentication or proxy authentication. NOTICE: After obtaining the Pass-Code, do not turn off the GTS until registration is completed. If the GTS is turned off before registration is completed, obtain the Pass-Code once more.	-
3. Confirmation of registered electrical key transmitter sub-assemblies to keep	While facing the logo side of a registered electrical key transmitter sub-assembly toward the engine switch, hold the electrical key transmitter sub-assembly near engine switch. Confirm that the wireless buzzer sounds once (short beep). HINT: The security indicator light illuminates when all the registered electrical key transmitter sub-assemblies to keep are confirmed.	30
4. Erasure of key ID	Double-check the number of electrical key transmitter sub-assembly to delete, and then press the delete button.	-
5. Confirmation of ECU code	Check that "confirmation of ECU code" is shown on the GTS. HINT: The security indicator light goes off when confirmation of ECU code is completed.	-
6. Erasure of ID code	Check that "ID code deletion is completed" is shown on the GTS.	-
7. End of erasure	Finish key ID erasure.	-

6. ALL KEYS ID ERASURE (SMART CODE RESET)

NOTICE:

Do not perform "Smart Code Reset" (all key ID erasure) until all of the malfunctions and symptoms have been confirmed and resolved. If all key ID erasure is performed without confirming or resolving malfunctions, key registration will be unable to be performed, resulting in unnecessary part replacement.

Process	Procedure	Time limit (seconds)
1. Start of erasure	Ignition switch off. Connect the GTS to the DLC3. Turn the ignition switch to ON. NOTICE: The ignition switch can be turned to ON up to 10 times, and then cannot be turned to ON again. If the GTS is connected and started while turning on and off the front door courtesy light switch assembly on the driver door (at intervals of 1.5 seconds or less between on and off), the electrical key can be normally registered. The auto power off function may operate approximately 20 minutes after the ignition switch is turned to ON. Perform All Keys ID Erasure within 20 minutes of turning the ignition switch to ON. Turn the GTS on. Enter the following menus: Body Electrical / Smart Key / Utility / Smart Code Reset Read "Seed Number" sent from TIS according to GTS screen. Input "Pass-Code Number" sent from TIS according to GTS screen.	-
2. Get Pass-Code	According to the display on the GTS, obtain the Pass-Code using online authentication or proxy authentication. NOTICE: After obtaining the Pass-Code, do not turn off the GTS until erasure is completed. If the GTS is turned off before erasure is completed, obtain the Pass-Code once more.	-
3. Erasure of ID code	Perform operation according to prompts on the GTS screen. Wait for 15 minutes.	-
4. End of erasure	Finish key ID code erasure.	-

7. ECU CODE REGISTRATION

Process	Procedure	Time limit (seconds)
1. Start of registration	Ignition switch off. Connect the GTS to the DLC3. Turn the ignition switch to ON. Turn the GTS on. Enter the following menus: Body Electrical / Smart Key / Utility / ECU Communication ID Registration / ID code box and Steering Lock	-
2. Confirmation of registered electrical key transmitter sub-assemblies	While facing the logo side of a registered electrical key transmitter sub-assembly toward the engine switch, hold the electrical key transmitter sub-assembly near engine switch. Confirm that the wireless buzzer sounds once (short beep). HINT: When checking registered electrical key transmitter sub-assemblies, check using an electrical key transmitter sub-assembly that is registered to the vehicle.	30
3. Registration of ECU code	Perform operations according to prompts on the GTS screen.	-
4. End of registration	Finish ECU code registration.	-

8. ECU COMMUNICATION ID REGISTRATION

NOTICE:

Do not open or close the driver door during registration. If the driver door is opened or closed, restart from step 1 of "Start of registration".

Process	Procedure
1. Start of registration	Ignition switch off. Connect the GTS to the DLC3. Turn the ignition switch to ON. HINT: The security indicator light goes off. Turn the GTS on. Enter the following menus: Body Electrical / Power Source Control / Utility / Auto Power OFF Cancel Cancel the auto power off function in accordance with the screen of the GTS. NOTICE: If the auto power off function is not canceled, the ignition switch may turn off unintentionally when performing step 2 "ECU Communication ID Registration" and ECU communication ID registration may not be possible. Enter the following menus: Powertrain / Engine / Active Test / Activate the TC Terminal Turn the TC terminal ON to send a TC ON forced operation request.
2. ECU communication ID registration	After 30 minutes or more have elapsed, Enter the following menus: Powertrain / Engine / Active Test / Activate the TC Terminal Turn the TC terminal OFF to send a TC ON forced operation cancellation request. Turn the ignition switch off. HINT: The security indicator light blinks.
3. Confirmation of registration	Turn the ignition switch to ON. HINT: The security indicator light goes off. Check that the engine starts and stays for more than 3 seconds. NOTICE: There are cases in which the engine will not start on the first attempt after completing ECU communication ID code registration. However, this is not a malfunction, as the engine can be started normally from the second start attempt.
4. Clear DTC	After confirming that the engine starts, use the GTS to clear DTC B279986 "Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid".
5. End of registration	Finish ECU communication ID registration.

9. REMOTE DOOR LOCK AND UNLOCK REGISTRATION

Process	Procedure
1. Start of registration	Ignition switch off. Connect the GTS to the DLC3. Turn the ignition switch to ON. Turn the GTS on. Enter the following menus: Body Electrical / Telematics / Utility / Remote Door Lock Setting.
2. Registration of remote door lock and unlock	Perform operation according to prompts on the GTS screen
3. End of registration	Finish remote door lock and unlock registration.

10. REMOTE ENGINE START AND STOP REGISTRATION

Process	Procedure
1. Start of registration	Ignition switch off. Connect the GTS to the DLC3. Turn the ignition switch to ON. Turn the GTS on. Enter the following menus: Body Electrical / Smart Key / Utility / ECU Communication ID Registration / Remote Engine Starter.
2. Registration of remote engine start and stop	Perform operations according to prompts on the GTS screen.
3. End of registration	Finish remote engine start and stop registration.