One problem related to wiper has been reported for the 2017 Ford E-350. The most recently reported issues are listed below.
Traveling west on i94 north dakota in a construction zone during a rainstorm. The windshield wipers became entangled when they went out of sync causing the driver side wiper linkage to break. We were forced to continue driving until we exited the construction zone as there was no shoulder and interstate traffic was two directions on one side. This was the fourth time the wipers failed in two years. Previous recall had been performed on wipers.