I have the exact same problem with my Porsche 997 S -05
When I press lock on the key all the doors locks, but the the drivers doors locks for maybe half a second and opens again. Very annoying. I also get the two beeps when doing this.

My Indie replaced the locking mechanism in the drivers door because he thought they had some microswitch that could be faulty, but it wasn´t that.

Now I really need you expertise. Can anyone help me? It would be great to be able to lock my car.

this started happening on my 2010 today.
checked doors lids glove box… i get one beep (like when something open)….
anyone ever find solution?

update. worked w. second key. but i also mad3 sure center console closed.