Central locking problem: locks and unlocks again

[EAD15]

You need a new driver side door lock actuator. They go bad. Common problem. You know how to get to it now, just replace the entire module. The symptoms of a bad actuator are all variations of the same theme. Either the door locks cycle repeatedly or the locks want to stay unlocked after you try to lock it.

I go into more detail how the system works below. In your case, it's just seeing an "unlock" trigger when you try to lock the door

https://www.aveoforum.com/forum/f81/power-locks-snapping-off-sounds-like-machine-gun-going-off-25210/#post213957