It's a common thing on these B7s. I had the devil of the time with wipers first year or so of ownership. The most common ailment is they seize through lack of linkage and spindle grease. The motor is rarely gone; just the seized wipers. Last time I had them took off and then greased the nuts later came loose. Not had an issue since that was sorted about 4 years ago. Rear wiper motor on the Avant too, that gets stuffed through water pipe leakage across the electronics; don't buy the Chinese aftermarkets like I did at first, that lasted less than 12 months; go Oem; again solid these past 4 years.
