check if the sw is this when your back

engine ecu p/n 03G 906 016 DT

latest sw 9883

if its not then there is this update

tpi 2014709/12
Cold engine difficult to start, misfires and has white/blue smoke - 2.0l 4V TDI Release date: 14-Jul-2010



Cold engine difficult to start, misfiring and white smoke or sporadic blue smoke. The engine has no coolant loss.

Technical background

1) The fuel quantity at the start is too low.

To locate the cause of the complaint remove the plug from the coolant temperature sender (G62). If the cold engine starts correctly, update the engine control unit