One problem related to wiper has been reported for the 2009 Audi TT. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Audi TT based on all problems reported for the 2009 TT.
A defective passenger side window sprocket in the pulley assembly caused the window to jam in a halfway open position which caused a dangerous visilibility condition while operating the vehicle in a snowstorm. The vehicle was literally approximately 36 hours past the time duration of the factory standard warranty period therefore Audi refused to assume liability for the window pulley assembly's failure.