I have been having a problem with my d3.
It will lockup at times, go to a black screen, not eject the disk, sometimes the nav arrow will be there but with no roads or poi’s, I captured some pics of what happens most.
When my nav screen goes out, or locks up, the radio still works in the background but with no screen, I can also change the audio input when it happens, usually turning the car off and back on will reset everything to work, I tried a reset on the system with the button next to the eject and after a couple days it did the same thing. About two months before this started I d