BMW of North America (BMW) is recalling certain 2009-2012 X5 xDrive35d, 2008-2012 X6 xDrive35i, X6 xDrive50i and X6 M, 2007-2012 X5 30si, X5 xDrive30i, X5 xDrive35i, X5 48i, X5 xDrive48i, X5 xDrive50i and X5 M and 2010-2011 X6 ActiveHybrid vehicles equipped with non-desiccated, passenger frontal air bag inflators containing phase stabilized ammonium nitrate (PSPI-2) propellant that were used as interim remedy parts for previous Takata recalls. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.