Not quite...this was covered on another thread but I cant find it.
The cluster has a light sensor, when it detects light....it lights up, when it's dark...it takes like 3 seconds to fade away. This when having your lights off.
Try it, if you have auto lights, turn them off (0 position) and when dark, you'll see only the red needles light up, then, with your cellphone or a small flashlight, point it to the dials, after a second or two, remove the light and you'll see the dials fully lit.
I don't know why they work that way, I prefer the way my mom's Altima work...cluster lits up all the time, auto lights on or off but at least since the
MK2 leon they work like that...