Garage Cabinets, Garage Storage, and Garage Organization

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So here is what i have:

Push driver door lock down manually all 4 doors lock.
Turn key in drivers door all doors lock.

Push central lock by gear shifter all doors lock except drivers.
Push remote lock button on keychain all door lock except drivers.

Anyone seen this problem before and is it for sure one thing? Before I take apart drivers door just looking for some input so if i need parts i only have to take it apart once. I would just hate to order a part and have it not solve the problem.

Thanks for any help.

1998 318i sedan