The 2nd row seatbelt on the passenger side comes unlatched during vehicle movement. Often times it will not latch and secure the seatbelt when a passenger is in the seat. On numerous occasions it has come unbuckled or would not work at all as required. Hyundai service centers have been unable to recreate the problem during inspection, stating there is nothing wrong with the seatbelt and we need to make sure we latch it fully. The deficiency never seems to happen during inspection but happens when my children and adult passengers are in the seat.