DTC B1A10: Keyless/F.A.S.T. key 1 low BATT. DTC B1A11 Keyless/F.A.S.T. key 2 low BATT. DTC B1A12 Keyless/F.A.S.T. key 3 low BATT. DTC B1A13 Keyless/F.A.S.T. key 4 low BATT. DTC B1A14 Keyless key 5 low battery DTC B1A15 Keyless key 6 low battery DTC B1A16 Keyless key 7 low battery DTC B1A17 Keyless key 8 low battery: Notes
WARNING: This page is about a different car, the 2018 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
When replacing the ECU, always check that the communication circuit is normal.