After a conversation with ch1z64 he suggested that I post my plea for help here. I purchased the car about 2 month ago and I am very contented with it. The car (according to the dealer who did the timing belt last month)) is an 01/09/2006 A3 T Fsi S Line Special Edition Hatchback 2.0 Automatic Petrol. My problem is that nobody so far including the previous owner who had it for 5 years nor the garage could tell me what the UWO is for. The only thing the garage said was that it must have been retro fitted. ch1z64 suggested that I upload some pics of the light switch and wiper switch and I therefore through myself at your mercy. Please ask for any further info if required to solve my problem. kind regards from a frustrated Newbie.