Thanks to all for sharing the useful dialogue above. In my case, I have a 2016.12 (with the easy to access fuse). I received the warning message about a month ago, and used the app to schedule the service appointment (pre-populated with the issue). Sadly there was a 3 week delay for an available appointment in Fort Worth, but I continued to drive the car normally. Amazingly I received a voicemail from the service center the day before the appointment, and they confirmed that the repair can be done while waiting. I arrived a few minutes early for the appointment, they pulled the car into the bay a few minutes later, and it took maybe 20 minutes to be replaced. No charge. Couldn't have been smoother. I have no idea how their algorithm determines when to display the warning message, whether before or after warranty.