does my2009 1.9 fiat doblo multijet have central locking as i have just purchased it with 1 key no remote just a kek that fit all the locks and ignition?
just wondered if it had centrol locking from the door/key lock?

Probably does if its a mpv rather than a cargo, AA key assist may be able to help you.

Easy answer, put key in door, turn it. Does it unlock just that door, or do others open?

If you've only one key, you need the other one. Any issues with loss, or immobiliser failure and you'll be in the poo.

Previous owner probably has it in the kitchen drawer. Ask them.
If bought from a dealer, demand another, they are not cheap.