They can use the same sensor that turns the headlights on and off. It's already used to dim the command center screen at night if you have selected a level other than "Parade".SoCalGuy said:Yeah - I liked the original roadshow cars which automatically changed 'themes' based on ambient light... hopefully they revive this feature (wonder if they kept the ambient light sensor in the production car... I suppose so given the 'auto' feature for headlights).brian said:I had that happen the other day, but only on the Nav screen. At the time the Nav unit was locked up, so I figured this was part of a malfunction. I've never seen it do that any other time, however, on one occasion I did have my dash go to the white theme for no reason.