5. Assembly

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Apply a thin coating of anti-friction agent to the reverse side of the window guide seal only
Perform fitting within 30 minutes of applying anti-friction agent
Anti-friction agent dries after fitting and becomes sticky