My 2018 just got same issue this last Friday. warning came on 4 times, called the SA, got the car in next day (Saturday), he mentioned that he thinks it should be fixed by the wire tie under the seat.
will let you guys know Monday or Tuesday how it went.
Its funny how the same problem just shows up in multiple vehicles same time...
so far, i had the car shut off (fixed by SW update), and passenger restraint (part I, fixed by drying the car due to humidity), now i have passenger restraint Part II
