I've just ordered 2nd hand A4 1.8T Sport but desperately want the Drivers Information System. Does anybody know if this can be added?? Is it just a flick of a switch by the dealer or would the dash need to be removed etc? If so I assume it is probably not able to be done but would be interested for some comments. It is a company car so I probably would only be able to take it to an Audi dealership for fitting so no other outfits can be suggested! Really appreciate any help.