Had a couple of problems over the last week of the my '04 A3 randomly trying to lock/unlock whilst in motion! This is just one of the issues I've been experiencing (along with being unable to lock via the fob, both windows going down when key is removed from ignition barrel...!). Had the car diagnostic checked at a local garage which reports nothing as being wrong, so suspecting the battery to be causing the problem. The car is not used as much as I would like due to having a company vehicle so I'm thinking that combined with the cold weather its not coping anymore. Charged the battery and seemed ok for a couple of days, but I've since had another episode for more of a better word!
Anyone else had the same problem?