Car Remote Locking System My Remote Central Locking Key Of My Car Mitsubishi Lancer Cedia Is Not Working, What Shall I Do?

My remote central locking key of my car mitsubishi lancer cedia is not working, what shall i do? - car remote locking system

The remote battery is new, but I think the remote does not send signals to open the car or the system of locking doors or a problem with the programming of keys in the vicinity