SECURITY LIGHT: 21, DTC: B10D8:00/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]SM2445840
SECURITY LIGHT: 21, DTC: B10D8:00/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5358000

DTC

Security light flashing pattern

21

Only one key or no key has been programmed

M-MDS display

Instrument cluster

B10D8:00

PCM

P1260:00
DETECTION CONDITION
• Only one key is registered
POSSIBLE CAUSE
• Only one registered key


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 [KEYLESS ENTRY SYSTEM].)
No
• Using the M-MDS, clear the key ID number and register a new key if necessary. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].)
• 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: B10D8:00/P1260:00
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 [KEYLESS ENTRY SYSTEM].)
No
DTC troubleshooting completed.