Re: rear window shattered
It is useful to hear that no others have had this experience. Regarding impact, I think it is highly unlikely. I looked at the rear glass after I parked because I opened the hatch. No glass defect. When I came back to the car 1.5 hrs later the glass had failed. A worker nearby stated that no one was near the car at the time.
The fracture/stress lines in the upper, right area point directly at a section of the interior framing. It would be highly coincidental for an exterior impact to just happen to hit at this point. Hence my hypothesis that the glass was in contact with this point of metal. And there a a fleck of paint missing on the metal at this point, further suggesting direct involvement.
Just to add a seed of doubt to the discussion this happened at a golf course. But the parking location is directly in front of the clubhouse, with no play areas nearby. In fact the area in back of my car is asphalt, with about 20 paces to the clubhouse entrance. Further, I was there at 7 a.m. and found the broken window at about 8:15, after playing 9 holes. In that time only another 5-10 players entered the course. And the 'starter' was nearby the whole time, attesting that no one was nearby. So golf was a non-issue. But I suspect this will help the non-believers.
And to repeat my previous suggestion: Testing the framing with a feeler gauge for direct metal contact might be a good idea.
P.S. I am sure missing driving the XB while it is at the dealer while Toyota makes up its mind if it is a warranty repair.