In Mitsubishi's electronic management system, every registered key fob is assigned a number. Code B1A10 corresponds to the registered with the KOS-ECU.
The internal coin-cell battery (usually a CR2032) has dropped to 2.3V or lower. mitsubishi b1a10
The ECU "judges" the battery as abnormal if it receives a low voltage signal from the transmitter . If you have a second key fob experiencing the same issue, you would likely see code B1A11 . Primary Causes of B1A10 In Mitsubishi's electronic management system
While a dying battery is the most common culprit, several factors can trigger this fault: several factors can trigger this fault: