The problem is I had a new battery fitted in the Car Key, but did no good. When I try to lock the doors some lock and others don't.
My car is a Nissan Sunny.
Sounds like your central locking MIGHT need reprograming. The windows might need to be also if you have any global opening / closing settings. Do you still have the destructions? It could also be failing door lock actuators and simply a coincidence the fob battery was changed.
I swear by the electrical place next to Daglia Insurance in K. Also the Key/Lock shop next to Dr Turk Medical Centre. . He had to reprogramme my locking system once, even came to the house.