Door latch replaced but driver's lock no longer works

[Modded996]

I had my driver's side door latch replaced recently but afterwards the lock is neither locking nor unlocking the door when inserting the key (versus pressing buttons on the key fob). I've been advised that I might need a new tumbler! Since the lock was working before servicing, I am not in an ideal situation. If there is something reasonably simple I might be able to take care of it myself but honestly I avoided doing this in the first place because it looked like a giant pain to take apart. Perhaps someone has some ideas what could be wrong? It just seems really strange to me that I cannot even unlock the door with the key despite the tumbler turning just fine indicating that the pins are aligned. My primary concern relates to the central locking going into hibernation after a few days and not being able to get back in, though I don't like things like the physical lock not working 100%.

Thanks.

[RFM]

At the end of the lock cylinder should be a connection part which looks like an oar or a scull from a rowing boat, which should enter in to the slotted hole of the door lock, probably this is not the case or broken. I would check that first.

[Modded996]

At the end of the lock cylinder should be a connection part which looks like an oar or a scull from a rowing boat, which should enter in to the slotted hole of the door lock, probably this is not the case or broken. I would check that first.

If this was the problem, could it be fixed or does it require the entire handle (996-537-963-03)?

[Richard Hamilton]

Unless you are careful, it is easy for the blade (that RFM describes) not to engage in the door lock assembly. I think he is correct, and it hasn't been assembled correctly.

[Modded996]

Unless you are careful, it is easy for the blade (that RFM describes) not to engage in the door lock assembly. I think he is correct, and it hasn't been assembled correctly.

Thanks for the feedback. The latch was professionally replaced but the timing is suspect.