I have made a quick search, but can't see anyother posts relating to this problem.
Has anyone else enabled the automatic door locking feature and found that after some time that it stops functioning? This has been annoying me for some time - the only way of re-enabling the feature is to unset and reset it.
Browsing through ELSA last week, I discovered that this is known problem - a fault in the software (v D37) in the central locking control module.
Of course, even though it's a known issue, the dealer still insisted that I took the car in for them to look at, which I did this morning (together with printouts from ELSA!). The car is now booked back in on Thursday, to have the module changed.
This fault may apply to all A6 derivatives (2002 onwards?) with a production date earlier than July 2003 (VIN 4B3N099686).