Just writing to seek advice. My vehicle is a late 2005 model with 1.9tdi ASZ engine and I have owned it since new. I use it a few times a year to do long trips to Europe/Scotland etc and have done 46000 miles. Last night (on my way from York) I felt the vehicle hesitate briefly then a coiled yellow symbol lit up and started intermittent flashing; there was also a message 'Engine Workshop' appeared on the display panel on the dashboard. I thought the vehicle started running a little rough thereafter but I cant say for certain, the warning(s) did not go off. Does anyone know if there is something known to be the likely cause? Would purchasing a VAG scanner be recommended? I was thinking of this one; http://www.ebay.co.uk/itm/321951727385 (I sadly have little faith in some of the workshops around). Any help will be appreciated.