SECURITY LIGHT 21, DTC B1213/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

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DTC | Security light flashing pattern | 21 | Only one key ID number is registered.
--- | --- | --- | ---
M-MDS display | Instrument cluster | B1213
PCM | P1260
POSSIBLE CAUSE | Only one key has been programmed.

Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY NUMBER OF REGISTERED KEYS • Using the M-MDS, perform the PID/data monitor inspection and confirm the number of registered keys. (See PID/DATA MONITOR TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Are two or more keys registered? | Yes | Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
No | • Using the M-MDS, clear the key ID number and register a new key if necessary. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.) • Go to the next step.
2 | VERIFY DTC • Using the registered key, turn the ignition switch to the ON position. • Is the DTC displayed again? ― Security light: 21 ― M-MDS: B1213/P1260 | Yes | Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
No | DTC troubleshooting completed.