The maps on our 2015 Prius Four are way out of date. Any way to relay the Google Maps or Sygic Navigation displays from our cell phones to the built-in video screen rather than replacing it with a new head unit?
The seven inch screen that folds out, that one? It's possible you have a composite video input. I've yet to try making it work. If your phones have MHL or micro-HDMI or such for outputs, you might be able to cobble up some kind of adapter, or wireless with a chromecast or something. You'd still have to interact with the phone to control it though.
The time machine just failed, with the result that our car's date of manufacture has now been restored to its original figure.