Help diagnose locking problem

[South]

driver side door seems to be the problem. I am not sure if its the actuator or the sticky locking mechanism (hook that attaches to car frame bit).

I unplugged all wires to see if the central locking would work from passenger side door, this with trunk and gas actuators unplugged as well, just in case they were the problem.

I am really stuck and am not sure what to change out or do...some help would be helpful

[BimmerMan1]

Had the same problem with my E46 and it was the actuator itself, just gave up on me all of a sudden. Normally a tell tale sign of it being the actuator is if it just fails all of a sudden and doesn't work. Electrical problems will happen all of a sudden, where as if its a sticky locking mechanism it'll work "when it wants to" and happen on and off before it completely goes.

[RW16610]

I have to agree with the post above. It would seem to be an issue with the actuator in that particular door as all else works which would rule out a wiring issue elsewhere etc. I know for my 97 328is a lot of my electrical problems did come with warnings. Things like the central locking system blowing fuses (that ended up being the harness in the deck lid having broken wire insulators and shorting) to the final stage unit keeping the blower motor on full blast when it was turned all the way up, when it felt like. Also, my wiper motor did the same thing before it went. It would only work on one speed and would do really strange things until it died completely.