I thought it would be that easy...but it isn't. My old Toyota had a feature on the dimmer wheel where, if turned all the way up, it would click into a dimmer override position. My 2011 4-Runner does not have that feature. Maybe it is on the Limited or Trail...but not on the SR5 (on the dimmer...
I own a 2011 T4R. I run lights on, always. The auto-dimmer makes the dashboard media center screen virtually impossible to see during the day. If the sunroof is open...well, its even worse! Is there a way to override the dimmer so that it stays the brightness it would be as if the headlights...