Ongoing issue with my car (A4) at the minute. When I open the doors with the central locking key button, about 50% of the time one of the passenger doors seems to remain locked. I can open it from the inside and it will then continue to work properly (ie i can open it from the outside again). All the other doors open as normal and are not affected.
The other 50% of the time i hit the button and it works no problem.
Any advice? Is it an easy fix? It's a bit frustrating as the kids would regularly use both doors.