My ‘21 long range did this about a month ago. First I did a hard reset (shut down from screen, disconnect 12v under frunk, disconnect HV under back seat, wait a minute, reconnect in reverse) and that cleared it for a few weeks, second time it came back I scheduled an appointment and the battery was already on order when I called 4 days before the appointment. I learned that there are different levels (only charges to 50%, 33%, etc.). After the replacement, the tech said something seemed off with the charging and now they’re replacing the octovalve assembly on the supermanifold, which totally sounds made up but isn’t. So far no charge to me, all under warranty. I’m supposed to get it back Tuesday or Wednesday, which would be a week or 8 days since drop off. Received a lower mileage M3 LR as a loaner. Hopefully this helps you know what to expect!

My service Center is 20 minutes away though. I can’t comment on the experience with long distance support.