[Transmission] Key barrel problems

[scottm1973]

Hi all recently purchased berlingo 2011 with an aftermarket remote central locking system. I'm told this model didn't come with remote central locking, anyways my question the key works the ignition and passenger door, but not the driver and rear door. I can't figure that the previous owner would change just ignition and passenger locks. The remote system is a bit off sometimes the lock button will open on the fob and vice versa. If the van has 2 different barrel sets are they easy to change so I have same barrels and keys 

Cheers

[cancunia]

Welcome.
I think you can get original locks from a dealer. Is it possible that the driver's and rear door locks were changed? A dealer should also be able to tell you the original lock / key numbers if you don't have the card with those details.