This time, I've carefully checked my car's setting, and read my owner's manual... "Sensitivity" means sensitivity to what? To light or to dark? I would expect "high sensitivity" auto headlights to turn on quite early, as I drove from afternoon into evening twilight. However, "high sensitivity" on that long road trip day starting at 4AM would mean, my auto headlights would turn OFF earlier, as the morning dawned. Which is it? Or does it mean, general sensitivity to light?? So, "High" would give me earlier evening headlights and later headlights at dawn? My car's behavior seems to be, way-too-slow response to tunnels and parking garages, no matter what I have the auto headlights set at. Yet, if I get in the car at night to drive somewhere, the headlights come on instantly. Why the long delay when I'm driving? BTW, my car is an early-2017-model, built in Fall 2016. In Seattle with our many parking garages and tunnels, this is a serious annoyance.