I got the same sunroof problem that I've experienced about two years ago (the button open/close problem).
Unfortunately I don't remember how I fixed it ( there is some sort of procedure on how to do it). But I do remember that I've posted the procedure on the ORG for future reference.
Since I can't do search , could someone please search for my post on sunroof problem and post the link here?
thanks.

 

Try this and also check your Owners' Manual supposedly:
http://forums.maxima.org/showpost.ph...3&postcount=10

 

Thanks - it worked!
Though I think I did something different last time.
Thanks again!!!!!

 

I think that by holding the close down (not the slider) button in place for about 10 seconds will reset the moter position sensor. Apparently disconnecting the battery causes it to loose its calibration.

 

it does not work without disconeting the battery.