AudiForums.com - Windscreenwiper issue

Hi all yesterday I was travelling down the motorway in the heavy rain and all of a sudden my windscreen wipers paused in the middle of my screen leaving me having to quickly pull over as I couldn’t see and I am now trying to diagnose the issue, The motors seem fine as I can hear them attempting to move the wipers but both my wipers are not moving I can move them both by grabbing 1 with my hand manually but they will not move by themselves and since it is raining quite often I need to fix it asap it is the 2007 year, If anyone has any suggestions please tell me as need to fix it as soon as I can