DTC B1A10: Keyless/KOS Key 1 Low Battery; DTC B1A11: Keyless/KOS Key 2 Low Battery; DTC B1A12: Keyless/KOS Key 3 Low Battery; DTC B1A13: Keyless/KOS Key 4 Low Battery: Notes

WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. 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.