For what it's worth, I had precisely the same problem with my new TROPHY purchased a week ago Monday.
The dealer determined that the battery shipped with the bike was bad; once he replaced it, everything was fine. Years ago, when I got back into motorcycles after a long hiatus, I had the same thing happen with a brand new SUZUKI LC 1500 -- bad battery shipped with the new bike. Once it too was replaced, all was well.
Perhaps your dealer will end up doing the same thing -- in any event, good luck.
Be safe out there . . . PLEASE!