Well, I figured this problem out. This seems to be a problem with either my 04' or the 04s in general as I found out this same part failed about 3 years ago (just before I bought the truck) and the dealer fixed it per a service invoice that was in my glovebox. The Rear Hatch Switch Assembly crapped out, as described in Service Bulletin ITB07-017. I ordered the new part from Infiniti Parts USA out of Scottsdale ($137, Switch Assembly Back Door, Part No. 25384-ZH60A) and followed the service manual on getting to the old part. You have to remove the lower trim on the liftgate from the inside and remove the part from that vantage point. I originally thought I could go through the license plate lamp finisher on the outside of the truck but no go on that idea. It was a bit tricky for not having removed the lower trim piece before but once I got the trim piece off, access to the part was fairly obvious. It took about 10 min. to swap old part for new, although the entire job took me ~3.5 hours since I didn't know what the hell I was doing. I did make a mistake which I will need to correct at some point when I have a spare hour. The part that I had to replace contains the rubber boots for the release buttons to operate the liftgate and glass window. I inadvertently installed the boot that opens the liftgate upside down so if anyone is reading this b/c of the same issue, make sure you install the rubber boot in the correct orientation. I think I may replace the entire license plate lamp finisher part b/c I noticed about 5 cracks in it from possibly the first time it was removed for the same problem. Also, the INFINITI emblem came off and as I looked it at closely, the legs on the backside that hold it in place broke off and appeared to be glued in some some weak adhesive. The entire license plate lamp finisher part is expensive ...I think $450 or so but since mine is cracked in multiple spots, I might install a new one and at that point, I'll correct the orientation of the liftgate open button. But all is well now ...the problem is gone. My liftgate locks are operating as normal and I probably saved a few hundred in dealer labor.