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SECURITY LIGHT: 15, DTC B1601/P1260

BHE090201077W11

SECURITY LIGHT: 15 | The keyless unit has detected unregistered key ID number.
DTC: B1601/P1260
DETECTION CONDITION | • The keyless unit has detected unregistered key ID number.
POSSIBLE CAUSE | • No keys have been registered after replacing the keyless unit. • Unregistered key used • Attempt made to register a ninth key • Keyless unit malfunction

## Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY NUMBER OF REGISTERED KEYS • Using the WDS, perform the PID/data monitor inspection and confirm the number of registered keys. (See PID/DATA MONITOR TABLE.) • Are one or more keys registered? | Yes | Go to the next step.
No | Go to Step 3.
2 | VERIFY NUMBER OF REGISTERED KEYS • Using the WDS, perform the PID/data monitor inspection and confirm the number of registered keys. (See PID/DATA MONITOR TABLE.) • Are eight keys registered? | Yes | Using the WDS, clear the key ID numbers as necessary, then go to the next step.
No | Go to the next step.
3 | INSPECT KEYLESS UNIT • Using the WDS, register the key ID number. (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.) Note • Two or more keys must be registered to start the engine. • Using the registered key, turn the ignition switch to the ON position. • Is the DTC displayed again? – SECURITY LIGHT: 15 – WDS: B1601/P1260 | Yes | Replace the keyless unit and perform procedures for when replacing the keyless unit only. (See KEYLESS UNIT REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.)
No | DTC troubleshooting completed.