SECURITY LIGHT: 13, DTC B2431/P1260

BHE090201077W09

SECURITY LIGHT: 13

Key ID number registration error

DTC: B2431/P1260

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 USING WDS
• Is B2431/P1260 displayed?
Yes
Go to Step 3.
No
Go to the next step.
2
VERIFY DTC USING WDS
• Is B1600/P1260 displayed?
Yes
SECURITY LIGHT: 13, WDS: B1600/P1260.
No
Go to the next step.
3
INSPECT KEYLESS UNIT
• Using the WDS, clear the key ID number and re-register it.
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 WDS.
– Is B2431/P1260 displayed again?
Yes
Replace the keyless unit and perform procedures for when replacing the keyless unit only.
No
DTC troubleshooting completed.