door handle lock feature not working

[Whitewalkers550]

as title states my driver door handle lock feature isnt working all the time now, anyone run into this and only fix im guessing is to replace the whole handle? passenger side works fine so i know its not my fob or anything, havent found too much on buying the whole handle either mostly just covers

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[AceS550]

It could be the handle, but there are many other things that could cause that to happen (loose connectors, damaged wiring harnesses, faulty modules, etc.) It would be helpful to have some diagnostic testing done first.