Daimler Vans USA, LLC (DVUSA) is recalling certain 2013 Freightliner Sprinter 2500 and 3500 and Mercedes-Benz Sprinter 2500 and 3500 vehicles. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.