DTC B1A08: Keyless/F.A.S.T. key 1 fail; DTC B1A09: Keyless/F.A.S.T. key 2 fail; DTC B1A0A: Keyless/F.A.S.T. key 3 fail; DTC B1A0B: Keyless/F.A.S.T. key 4 fail; DTC B1A0C: Keyless key 5 fail; DTC B1A0D: Keyless key 6 fail; DTC B1A0E: Keyless key 7 fail; DTC B1A0F: Keyless key 8 fail: Diagnosis

STEP 1. Synchronize the rolling code and recheck the DTC .
1. Synchronize the rolling code.
  - Push the lock switch or unlock switch of transmitter twice or more.
  - If the keyless entry system does not resume by the procedure above, register the key again (Refer to POWER DOOR LOCKS WITH SELECTIVE UNLOCKING INSPECTION <VEHICLES WITH ELECTRIC RETRACTABLE REMOTE CONTROLLED DOOR MIRRORS> ).
2. Recheck if the DTC is set.
  CAUTION: To prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-IIISE).
  1. Connect scan tool (M.U.T.-IIISE). Refer to SPECIAL TOOLS .
  2. Push the lock switch or unlock switch of transmitter.
  3. Check if the DTC is set.
Q: Is the DTC set?

YES: Go to Step 2.

NO: The diagnosis is complete.
STEP 2. Check whether the DTC is set again .
Replace the transmitter by which the DTC is set with a new one, register the key (Refer to POWER DOOR LOCKS WITH SELECTIVE UNLOCKING INSPECTION <VEHICLES WITH ELECTRIC RETRACTABLE REMOTE CONTROLLED DOOR MIRRORS> .), and recheck if the DTC is set.
1. Push the lock switch or unlock switch of transmitter.
2. Erase the DTC.
3. Check if the DTC is set.
Q: Is the DTC set?

YES: Replace ETACS-ECU and register the ID codes (Refer to POWER DOOR LOCKS WITH SELECTIVE UNLOCKING INSPECTION <VEHICLES WITH ELECTRIC RETRACTABLE REMOTE CONTROLLED DOOR MIRRORS> ).

NO: The diagnosis is complete.