Hi.
The tech told me this morning to charge the 12v battery with the hood open until it is full.
After that, disconnect the 48 volt connector at the battery (biggest connector)
Let the 4 amp trickle charger on for the rest of the winter. Hood open or close no difference since the 48v battery is disconnected.
One thing in noticed is that the defrost light is now flashing with the engine off. Light on the left side of the steering which illuminate the control for the exterior light is always on even if the doors are close. I started the car to see if it would start to find out that the climate control is red and nothing is working anymore.
I read that a guy had to reprogrammed twice his car at the dealer with such a problem.
The tech as never seen that before.
What a pain. 85,000$ car M440i 2021
