Really too bad about all of this, love the car but it seems like VW isn't quite ready to handle maintaining their electric vehicles, at least not this model. And I'm seeing now that maintenance cost savings are much less of a guarantee. Here's the story:
My 2015 eGolf with 79K miles had an "Electrical System Error: Service Required" error. The car would still drive but would not charge. VW replaced the 12V battery and that did not fix the problem, and that is all the dealership's personnel could do. A special electric car tech was sent for further troubleshooting and one of the main battery's sub-modules was found to have failed. Parts had to be ordered from Germany (car is in California) and 3.5 weeks later the repair was complete. I was told the fix would have been $5000 to $6000 if not for the warranty, which expires at 100K miles (corrected).
My thoughts are that this should have been an easy repair since the battery is modular and parts should at least be on hand somewhere within the US. Due to this experience, I am going to warn friends and family about purchasing an electric vehicle from legacy manufacturers for now. Since we're dependent on dealerships to maintain these vehicles, and since they have little to no experience with them, parts may not be in stock and the technical expertise will be missing for years to come. And the maintenance cost savings idea fails if a simple sub-module replacement costs that much.