I've just noticed this on mine this morning which prompted me to do a search for the subject on here as I found it confusing to be honest. I don't have auto lights, I do have DRL's though. I left for work this morning with my DRL's switched off (so everything off) and it's not the brightest of mornings, no sun! (not much difference there then!) and I go through an area where there are loads of trees which makes a tunnel effect and basically makes the road pretty dark, espeically with no sun out as well. I noticed that I could barely see the numbers on my cluster, only the red speedo arrow (or whatever its called!) which was lit. I thought that was strange and as I came out into better light I noticed the cluster light coming back on again. Why isn't it the other way around I thought to myself? Would make more sense surely.
Anyway, I carried on my journey to work and I was paying particular attention to this area and suddenly noticed that the dimming had reversed. I got to a tunnel and the cluster remained fully lit... Very strange, whats right and whats wrong? I'm confused.
This will eventually lead me to ask that can this system be linked to setting up auto lights?