51 44 001 Removing and installing/replacing headliner (without slide/tilt sunroof)
WARNING: This page is about a different car, the 2003 BMW X5 and 2002 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Except for the steps relating to the slide/tilt sunroof, the work is identical to:
51 44 011 REMOVING AND INSTALLING/REPLACING HEADLINER (WITH SLIDE/TILT SUNROOF) .