Code No.B1A25 Key ID unmatched
caution |
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DIAGNOSIS FUNCTION
JUDGMENT CRITERIA
PROBABLE CAUSES
- Malfunction of CAN bus line
- Malfunction of the ignition key
- Malfunction of WCM
- Accessory key not registered
- Key is registered to another vehicle
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnostics
Q.
Is the check result normal?
STEP 2. Register the key ID and recheck the diagnosis code.
(1)Turn the ignition switch from the LOCK (OFF) position to the ON position. |
(2)Check if the diagnosis code is set. |
Q.
Is the diagnosis code set?
STEP 3. Replace the ignition key with another registered key for the vehicle, and recheck the diagnosis code.
(1)Turn the ignition switch from the LOCK (OFF) position to the ON position. |
(2)Check if the diagnosis code is set. |
Q.
Is the diagnosis code set?
STEP 4. Register the key ID and recheck the diagnosis code.
(1)Turn the ignition switch from the LOCK (OFF) position to the ON position. |
(2)Check if the diagnosis code is set. |
Q.
Is the diagnosis code set?
STEP 5. Replace the ignition key with a new one, and recheck the diagnosis code.
(1)Turn the ignition switch from the LOCK (OFF) position to the ON position. |
(2)Check if the diagnosis code is set. |