51 11 158 Replacing holder for number/license plate
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.
Unscrew number/license plate.
Release screws (1) and remove holder (2) for number/license plate.
Fig 1: Identifying License Plate Holder And Screws