Additional Key cannot be Registered [09/2015 - ]: Procedure

1. Check for DTCs. Refer to DTC CHECK / CLEAR [09/2015 - ] .
   NOTE:

   If a malfunction occurs, do not remove/install the vehicle battery before checking for DTCs.

   OK

   DTCs are not output.

Result: 

NG 

GO TO DIAGNOSTIC TROUBLE CODE CHART 

Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2015 - ] )

Result: 

OK 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Smart Access / Data List.
5. Read the Data List according to the display on the Techstream.
   SMART ACCESS
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Unmatched Vehicle-ID	Key No. (incorrect or correct) / Yes or No	Yes: Communication malfunction No: Communication normal	The vehicle ID registered in the vehicle and the vehicle-ID registered in the electrical key transmitter sub-assembly are different (if a key from another vehicle is brought into the vehicle exterior detection area while the doors are locked, "Yes" is displayed for "Unmatched Vehicle-ID" in the Data List). Other potential causes: An electrical key transmitter sub-assembly from a different vehicle is being used. A communication error due to wave interference. The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.

   RESULT
   
   

   Result	Proceed to
   "No" is displayed	A
   "Yes" is displayed	B

Result: 

B 

See step  4

Result: 

A 

See step  3

1. Check that the steering unlocks. Refer to DIAGNOSIS SYSTEM [09/2015 - ] .

   HINT: 

   Check that the communication between the steering lock ECU (steering lock actuator assembly) and certification ECU (smart key ECU assembly) is normal.

   OK

   The steering unlocks.

Result: 

NG 

GO TO STEERING LOCK SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] )

Result: 

OK 

See step  4

1. Using other unregistered electrical key transmitter sub-assemblies, perform the additional registration procedure. Refer to REGISTRATION [09/2015 - 08/2020] Refer to REGISTRATION [08/2020 - ] .

   OK

   Additional registration can be completed.

Result: 

OK 

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (FIRST REGISTERED KEY WAS DEFECTIVE) 

Refer to REMOVAL [09/2015 - ] )

Result: 

NG 

See step  5

1. Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies to the new ECU.

   HINT: 

   • For replacement. Refer to REMOVAL [09/2015 - ] .
   • For registration. Refer to REGISTRATION [09/2015 - 08/2020] Refer to REGISTRATION [08/2020 - ] .

   OK

   The key ID can be registered.

Result: 

OK 

END (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] WAS DEFECTIVE) 

Result: 

NG 

GO TO OTHER PROBLEM (New key cannot be Registered) 

Refer to New Key cannot be Registered [09/2015 - ] )