Side Rear Windows on Vito Combi Don't Lock

[Mankala Man]

Hi all, I am new to the forum so thanks very much in advance! I just purchased a Vito 110 CDI Combi van from a dealer and very happy with it. One important thing that I noticed once I got home, was that the rear side windows (as from manufacturer) can't be locked so anyone can get in to the van from outside just by sliding the windows! Is this a common fault in combo vans? Is it a case of having to replace the whole slide rear window (as the lock mechanism seems to be stuck really hard to the window)
Many thanks in advance
Chris

 

[Marku]

Not common as far as I know. The lock should function easily as its not complicated wont the dealer put it right under the warranty?