One problem related to wiper has been reported for the 2009 Subaru Tribeca. The most recently reported issues are listed below.
Windshield cracking for no reason. Approx 4 clean, through and through, cracks now. All roughly 8' long. No chips and/or rock dings. Woke up two mornings ago, car garaged, and there was a new crack after it sat idle in a garage all night.