Pulling cutting wire into vehicle

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Grip wire with pliers (If accessibility is bad, stick wire with wire starter 2 150 267 through adhesive bead.)
Wire end (1) must be bent towards window glass.
Heat wire end (1) and use it to pierce adhesive bead (2).
Pull the wire approximately 1.5 m into the passenger compartment

Fig 1: Identifying Wire End And Pierce Adhesive Bead
Courtesy of BMW OF NORTH AMERICA, INC.