Same shit happened to me a few months ago get a new screen on eBay they’re good quality can’t find the exact link for the one I bought but here… easy install too
17-22 Replacement 8.4" Uconnect 4C UAQ LCD Display Touch Screen Radio Navigation | eBay
BOTH MODELS INTERCHANGE WITH EACH OTHER. THIS NUMBER IS FOUND ON THE BACK OF YOUR LCD. NO PROGRAMMING REQUIRED, THESE SCREENS ARE PLUG AND PLAY. Actual Images of item are shown above. About our policy.