This site uses cookies to offer you a better browsing experience. Find out more about how to manage cookies, or dismiss this message and continue to use cookies.

auto dim [HP]

patruns 10 Points
I was driving through an unlit tunnel in Tennessee 2 weeks ago in the middle of the day and I noticed my unit go into a quasi night mode. Not full blown like it does at night, but dim with a color scheme change. I have never seen this happen before and I do not see any type of electric eye or light sensor on the unit. How does this work? It was very cool! :?


  • johnb 0 Points
    I think you will find the tunnels are marked on the maps so it just switches to another display mode when it gets the appropriate "I'm in a tunnel" signal. Mine sometimes switches before the tunnel entrance showing it is hard-coded and the maps aren't quite accurate.
  • patruns 10 Points
    I was thinking maybe it was that. Plus, I recently updated the maps............
Sign In or Register to comment.
↑ Top