WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. However, it is still accessible from the selected car via links, so may be relevant.
2327752 Crimping tool MW
Fig 1: Identifying Crimping Tool (2327752)
Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:
Basic pliers (e.g. in conjunction with die 54 0 230 for crimping the cables on the soft top in E93) [Released]