I'm having similar issues. Picked up a Limited on Jan 24th, a couple days later I got a notification on the Toyota Connected app that a "window was down". Went outside to check the car, no windows down, went back inside. Next morning the battery was dead. Second time it happened I used the app to lock the van when it told me it was unlocked (i had run an errand and didn't lock it when I got home), the next morning it was dead. Took it in today to the dealer, they checked the battery and claimed it was dying due to short trips plus the extreme cold. Not feeling like that is the correct answer, given that the only times it happened the Toyota Connected app was involved. I feel like it was something to do with the DCM.