It appears that Mercedes has a software update campaign for the B Class Electric. This was in my Repair Order when I got the car back from the dealer:
242 SOFTWARE UPDATE CAMPAIGN
Story: 1446 CAMPAIGN 2015010004 PERFORMED SOFTWARE UPDATE OF PTCU
Unfortunately, it took them a whole day to...
I started getting the "Service required...do not change gears...visit dealer" warning intermittently last week. Left car with dealer in Santa Monica and it took 'em 24 hours to figure out it was, indeed, a firmware issue and round up someone qualified to fix it. Shouldn't the whole service...