Thank you for your helpful reply Richard.I tried myself online and drew a blank,but that is probably due to the fact that I am a bit of a technophobe have only recently mastered the retractable biro ! Would still love to know what the prefix LLU is,but they can look at the gearbox when they do an oil change . Could the snicking noise when it’s put in gear be the Dual Mass Flywheel starting to wear as it occasionally shudders on starting and I seem to remember our A3 doing that before we had the DMF replaced.Anybody else had this on a Q5 with stop start? Bought the car privately on condition ,service history and low miles but would have preferred motorway miles.Does it need a Haldex service in the real world at 59k and not the alternative Audi maintenance universe ? Anybody know a decent Audi specialist in the Notts Lincs Leics Area? Thanks again Richard.