Came out to a dead battery, despite the battery being less than four months old. On one occasion, I came out to the vehicle with the windows rolled down. On another occasion, I was told there was an issue with the anti-theft system. There was even a time where I came out to my car in accessory mode, despite not turning the vehicle on. Reading online, all signs point to a failure of the BCM. This is a common enough issue where there are entire threads dedicated to the problem.