My girlfreind had this on her lupo. I plugged vagcom in and it came up with being faulty ignition lead but on your it might be something different. If you can borrow vagcom it should say what the problem is
Can vagcom software be downloaded from the net? and all you need is a lead from your laptop to the car?
http://www.ebay.co.uk/itm/VAGCOM-US...iagnostic_Tools_Equipment&hash=item27cc4bfb52 Is this what i need?