Please let me know how that works. I may need to do the same with mine.Just received my car back today. It has all the same faults described as above since delivery. It has been taken in 4 times since November and nothing has resolved the issue.
Problem is that the issues are getting worse, now the car deletes all saved radio stations randomly and it is now affecting the reverse camera. It has become jerky and delayed so am afraid it will lead to hitting something.
Audi Watford have said they have been told that the Audi Factory are aware of the issues and that they are working for a fix for it but were not able to give any type of time frame. Audi Customer Services have been particularly unhelpful, their advice so far has been to try taking it to another Audi garage.
I am going to attempt to return the car through the leasing company as I have no faith anything will fixed anytime soon.