Hi Alison,
I wanted to let you know that my radio arrived at the dealer on Monday, and they were able to “replace” it today. Oddly enough, it looks exactly like the same radio. The screen still has the same fingerprints from this morning. Honestly, I don’t believe they actually replaced it; when a screen is changed, you usually get a protective cover on it, which I didn't receive. In my opinion, they just disconnected and reconnected it. Since the third-party warranty is covering this, I didn’t feel it was worth questioning further. Maybe when you take your car, you could ask for the old unit back? Or make a tiny mark on one of the buttons…