[MattAlpha]

I've been having this type of difficulty since I got my 911.
I have the fully automatic locks (if the central locking system is messed-up I can only unlock the doors from the outside).
Last week I took my passenger side door panel off to fix the door handle and experienced the same type of crap after I put the door back together.
At first it would lock on the driver's side only and unlock from the passenger side only. So I disconnected the microswitch wire in the passenger side door (the way the car came to me, go figure) and then the car would lock and a second later it would unlock both doors. Very aggreviating, so I tried with the ignition in positions 1 and 2 and each time I held the central locking button in (for about two seconds) the doors would lock and stay locked, but they wouldn't unlock when I pushed the button a second time. I would have to disconnect the battery to get them to unlock from the driver's side door. So I played with it for about two hours until it would lock and stay locked from the driver's side. So I went to work the next day (my 911 is my daily driver) and I locked the car. I waited a minute to make sure it didn't unlock itself, satisfied I walked away. After work I got to the car and it was unlocked!!! I was a bit POed this time. The Next day the electrical locking mechanism magically worked the way it used to (which I think is wrong because the passenger side microswitch is still disconnected so I can't lock the car from that side). I'm just hoping that the system stays working.
I feel for everyone else who has this problem, very aggreivating.