I have a 2016 4Runner SR5 4WD with 13k miles on it. I have a moan/grind vibration coming from the floor when decelerating from 45-30mph. It seems to be worse in colder temps but it does not do this when in 4WD. My dealership felt the issue but did not know what it was, they were thinking it could be a bearing in the transfer case. They called the Toyota FTS and after waiting over a month the guy comes out and says its "characteristic" of 5th gens and no repair necessary. I had a 2013 that never did this and I have test driven several other 2016 models and did not feel this vibration. So needless to say the dealership is siding now with Toyota and basically telling me to go pound sand. Anyone experienced this issue? Any Toyota techs know the fix?