Mitsubishi B1a10 -

Turn the ignition ON, then lock and unlock the doors using the fob. If the code returns immediately despite a new battery, the fob itself may be faulty.

In Mitsubishi's electronic management system, every registered key fob is assigned a number. Code B1A10 corresponds to the registered with the KOS-ECU. mitsubishi b1a10

Ensure your keys are stored far enough away from the car when parked to prevent "parasitic" drain. Turn the ignition ON, then lock and unlock