The real problem is that when plugged in, it activates the 12v system which runs the high voltage charger. But when the high voltage charger is complete, it shuts down the DC to DC converter which is maintaining the 12v battery. But since the 12v system remains active, it drains the 12v battery whil...

I have experienced this as well. From what I am thinking, is that when plugged in to a charger. The 12v system is activated and stays activated to run the high voltage charging system. While it is charging the high voltage battery, the DC to DC converter maintains the 12v battery. But when the main ...