WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Side Panel Weatherstrip & Retainer
Courtesy of CHRYSLER GROUP, LLC
Open all windows.
Open convertible top as needed.
Carefully grab one end of the weatherstrip (4) and pull away from the retainer (2).