2015 Lincoln MKS - Screen too dark

mylincolntouch screen is too dark even with daylight and max bright manual selected

Ford has certainly experienced some problems with that technology. Maybe someone here can provide some experienced info, but I expect your best bet is to ask at a Lincoln dealership. Have you done that already?

The screen may simply be bad. Start with a dealer but you may need to have the screen replaced. It’s possible an independent garage or a car stereo shop can replace it. Get a few quotes and have your credit card handy because it won’t be cheap.

you can try doing a reset. your owner’s manual should tell you how. I think there is 2 buttons you press at the same time. if that does not work you can try pulling the fuses for the radio and sync. if neither of these works then follow davepsinbox advise.