Resurecting this thread; I have a 2015 Octavia - basic model, see my profile pic, so no auto light option and no ambient light detection. In fact there's nothing auto about my Octavia; I bought it because it was as close to "analogue" as I could get in the VAG selection of cars.
Recently, I began travelling a freeway with a short tunnel and while road signs recommend turning on headlights, it's not really necessary. In the instances I don't, the speed and tachometer needles are illuminated but not the entire dials. In my previous car, the dials and needles were illuminated all the time. I've searched the VCDS and OBDEleven sections here to find an adaptation to turn dial lights on all the time and found none. Anyone else have a clue?