Our nearly new 2021 Aviator lost the navigation function. Just before it ceased to appear on the screen, it would give wrong location and wrong directions--then NOTHING. I'd try posting on the Lincoln Owners website, but I never registered there because it seems to be populated by people who don't have the overall knowledge base of the members on this website. And, on edit, it does not do a forced reboot by pressing the "power" and "seek up" buttons simultaneously.