dgarrowser.......Sorry you're having a similar problem. It appears this may be systemic with this new model RAV. Hopefully Toyota will hear enough complaints and offer a permanent fix via a recall.
Meanwhile, my dealer found the problem and provided a fix, at least temporarily. The problem is from the black rubber weatherstripping around the back door (hatch). There are two strips, one that goes around the edge of the hatch, and one that is on the car body. I was told the mechanic lubricated the weatherstripping and the sound went away. I don't know which of the strips was causing the noise or what he specifically applied and foolishly neglected to ask.
However, a few weeks later the rattle returned. I took some silicone spray, applied it to all the weatherstripping, and once again the noise is gone. I hope this helps you and we get a factory solution soon. Good Luck!
