Hi Thanks to all who have answered this thread. To clarify then its the second option ie the anti hijacking mode where the car locks itself when you are doing 5mph. I have had this set by my local audi dealer for the princely sum of £38, which is quite steep I think, if it is just the flick of a switch. If it is more complicated then the cost is justified to some extent. I am curious as to how it is done and would like to know how, so that I can reverse the setting at some time in the future. Once again thanks for the replies and sorry for the delay in my response to you.