Yes, it does state how to drill down down into settings and adjust brightness. There are 2 bars: one each for daytime and headlights on. The former is highlighted and adjustable, the latter grayed out. Why have it listed in the menu if unable to highlight and adjust? I attempted at night w/ lights on, etc and every possible mode. The light level is a little too distracting at night for me. On sedans, there is a manual scroll button next to light switch. I love low tech sometimes.