Upgrade to remote lock from manual central lock system

Sir my car Elantra comes factory fitted central lock and accordingly just push of lock button on driver's side door locks or unlocks all doors including trunk. This function is done manually.

Now I want to upgrade to remote locking. Since the car is factory central, I hope no extra actuators would be needed to make it remote lock.

Is just installing the remote key would be enough for the remote system, and just some extra wiring harness!?? If extra is needed, please guide me on full details of how to make it remote lock system.

Awaiting your reply. Thanks.