hmmmm, good question... i'm guessing you have an '07, because i've never seen that on an '06. i know the 07's do not have the headlight washers, but do have the aux audio jack in the glove box... is it possible that they also did away with the auto leveling headlights and instead went to a manual setup? i know the mitsubishi evo's and the subaru sti's with xenon headlights have a manual level adjustment from inside the cabin. in those cars the control looks just like what you have circled. when you move that with your headlights on (switch in on position, not just the DRLs) do they move up and down? or do you know for a fact that you have the automatic leveling ones?
interesting pic... i've never seen that before. in mine, which is an '06, i have just the knob to the left for adjusting the interior light level for the gages and radio display, the area to the right is blanked out just like the two switches next to the esp button on the console.