SECURITY LIGHT: 13, DTC: B2431/P1260/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]

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SECURITY LIGHT: 13 | Key ID number registration error
DTC: B2431/P1260/P1260:00
DETECTION CONDITION | Key ID number registration error
POSSIBLE CAUSE | • Errors during key ID number registration procedure • Any of the following items are touching or near the key head ― Spare keys ― Keys for other vehicles equipped with an immobilizer system ― Any metallic object ― Any electronic device, or any credit or other cards with magnetic strips

Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY DTC • Is B2431/P1260/P1260:00 displayed? | Yes | Go to Step 3.
No | Go to the next step.
2 | VERIFY DTC • Is B1600/P1260/P1260:00 displayed? | Yes | Perform the DTC inspection for “SECURITY LIGHT: 13, M-MDS: B1600/P1260/P1260:00”. (See SECURITY LIGHT: 13, DTC: B1600/P1260/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)].)
No | Go to the next step.
3 | INSPECT KEYLESS CONTROL MODULE • Using the M-MDS, clear the key ID number and re-register it. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS ENTRY AND START SYSTEM].) Note • Two or more keys must be registered to start the engine. • Using the registered key, turn the ignition switch to the ON position. • Verify the DTC Using the M-MDS. • Is B2431/P1260/P1260:00 displayed again? | Yes | Replace the keyless control module and perform the resetting procedure for the immobilizer system when replacing the keyless control module. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
No | DTC troubleshooting completed.