WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Foil (2356848)
Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:
Silhouette foil (set) for special tools 2346947, 2344569, 2318573, 2348128, 2353020 and 2351398.