I just replaced my 2007 Mazda5 Sport with a 2010 Mazda5 Sport. On my 2007, and on all cars I have ever driven, the instrument panel only lights up when the headlights are turned on. If you forget to turn on the headlights, you figure it out very quickly because the instrument panel is dark. On my 2010 Mazda5, the instrument panel lights up automatically when it is dark or even just overcast outside. The headlight switch has no effect on the lighting of the instrument panel. As a result, I have driven the car with the headlights off on more than one occassion, and so has my wife. I checked the manual, and it says that the headlight switch is supposed to also turn on the lighting on the instrument panel. I called this to the attention of my dealership and Mazda Customer Assistance, and both told me that it is functioning normally and is probably just a design change. I feel that this is extremely unsafe, as it is far too easy to drive with the headlights off without knowing it. Has anyone else here experienced this issue? Do you think it is normal or safe for the instrument panel to light up automatically when the headlights are off?