I forgot that two or three weeks ago I looked down and my odometer read zero. After a mile or so it was back to true mileage. A week ago I received the warning, “Car may not restart!” SVC said my HV battery coolant heater was fried as well as my 12v batt after supercharging. A week after replacement I looked down tonight and my odometer was at zero again and reset to true again after a mile or so. They did a firmware update last week so I know it’s not that. My concern is that it is a deeper seated issue. Anyone have this before?