[Dif]

I just realized I don't have the Nav screen reflection in my back window at night.
Here's the only reason I can think why I'm not getting the reflection.
Every vehicle I get I find the mirror to be hanging too far down towards the center of the wind shield for my liking.
It blocks my line of sight through the middle of the winshield so, I push the mirror up, to the roof, as far as it will go and readjust it in that spot.
Let us know if that works for you.