hi my friend has a 03 vectra 1.8 petrol.there is a warning light coming on when you start it,its a steering wheel wit an ! mark,car starts and then cuts off straight away?anyone know what this could be,he brought it to local garage and couldnt find any problems they said to bring it to opel dealer and would probly cost over a 1000euro to fix,anyone any ideas what the problem might be??