RE: Factory locker - if you look at this pic

http://www.nissanusa.com/m/cma/v/fuv/fuv_xterra_gal_lg02.html

the second button from the right isn't very detailed, but that kinda looks like a drivetrain graphic in the middle with perhaps an on/off graphic on the top and bottom of the switch (rocker style) - factory locker??

The second button from the left is not the rear window defroster - it's still with the AC controls. No idea what it could be.

Funny that on the Nissannews.com site, on the high res version of the picture the buttons are blank

http://www.nissannews.com/multimedia/nissan2005/xterra/colour/13_2005_xterra.jpg

Yet the second from the right has little ridges on it indicating fealers for a rocker switch, that matches the button text from the first picture. They probably photoshopped out the text on the Nissannews picture (bastards!)

EDIT: I just noticed in the first pick the key is now in the dash instead of the steering column...