Who has EVER had a resolution to an electrical issue at a dealer that did not take WAY too long and cost WAY too much.
I'v seen topics, "After six weeks at dealer, still no start..." and "Two months, still runs rough..."

That is not a solution, it is just another problem. When Tricials' car would not run, she took it to a dealer AND a local MB shop. Weeks went by - the car was fixed by Charlie when he came over with a spare TB. All three of us learned about the car that day - and he had it running fine in an hour!