Daimler Vans USA is recalling 271 2016-model year Mercedes-Benz and Freightliner Sprinter 2500 and 3500 vans because the bolts connecting the lower seat belt to the rear bench seat may not have been tightened adequately, the National Highway Traffic Safety Administration reported. “If the bolts were not properly tightened, the seat belt may fail to secure the seat occupant in the event of a crash,” NHTSA warned on its website.