That happened on my F150 from the dealer tag. I had to solder it back on (learned how to solder doing it). I actually turned it on so it would spark and then I knew it had a connection.That did not work (need more practice soldering more I guess), so I actually used super glue and apparently it is conductive enough that it worked fine. Or maybe I got enough on the surrounding areas that it stayed in place. It worked until I traded it and never came off again.The Expy may be a littl more challenging because the window opens and closes and my F150 was a fixed window, but it would be worth a shot.