Three problems related to side/rear glass have been reported for the 1998 Toyota Sienna. The most recently reported issues are listed below.
Rear windshield spontaneously shattered while driving on an open country road , no overhanging trees or overpasses), with other traffic present. No sign of any impact. Sounded like a thump", then looked back to see the windshield shattered. Pulled over as my daughter and son who was in the back row of seats began screraming.
Rear window shattered spontaneously without being struck by anything and without striking anything. This happened on a hot day, with windows closed and air conditioning on full. No apparent cause for window disintegrating identified.
Design of the tinted windows causing poor visibility.