By the way, I also have been having an issue with my rear lift glass randomly opening. It would happen at irregular intervals whenever all the doors were unlocked. It was as if I was hitting the button on the key fob, but I knew I wasn't. I didn't try too many things, and I nearly took it to the stealership to have them look at it. In one forum, this issue was discussed. Eventually, the poor guy found out the button to release the lift glass was getting stuck. Not the button on the key fob, but the button to the right of the lift gate handle. I didn't even know that button was there. So I wiggled the button around a little, and pulled it out some. I also hit it with some spray silicone lube because it was obvious that it was sticking when I actuated it. Well, I left the doors unlocked for about 5-6 hours today, while a patch job on my driver's seat was drying. Voila! No open lift glass!
So if you're having this issue of randomly opening lift glass, check that button first.

05 WK 5.7L
K&N 57 series CAI
True dual Flowmaster exhaust