It looks like my E61 needs the battery to be charged at least every few weeks. Need to figure out why.
If I don’t, then the light on the right shows.
At first I thought this might be a key-fob issue (which was also running low on batteries), but that is a different icon. A few weeks later without using the car, date and time in the car were being reset, so it is definitely a car battery charge issue.
Some links:







