I had a passenger window leak near the little triangle. Had to bring it back to the dealer a few times because they didn't fix it right the first time. Turns out the window needed an adjustment in the height and the pitch. Now no water! That is the problem with frameless windows.

Don't panic. It is a simple window adjustment and don't let them tell you otherwise. If they don't fix it the first time keep bringing it back. They best way to adjust it is in little steps. A little adjustment here and there.... if it still leaks make another adjustment. The best way is an adjustment a little at a time.