Not sure if I am asking the right question, But I haven't even had my car a full year and I am possibly having issues with my keyless remote fob I believe. When I click to lock or unlock it doesn't respond, nor does it start my car. with that being said, 1. does this mean i need to change the battery? 2. if i change the battery will this help my car to start, or will it have to be reprogrammed?
I have no experience with your model Hyundai.
However, the first thing to try with a non-working (or now-and-then non-working) remote is to remove its battery, buy a new battery of the correct type, clean both the battery contacts in the remote as well as the battery faces, then install the new battery in the remote. That should restore the remote to operability, i.e., it'll transmit when its buttons are pushed. Changing only the remote battery may not require re-pairing the remote with the car.
The lock and unlock functions are impacted by the key fob battery. See this YOUCANIC guide on how to change the battery on your keyfob. It is very easy.
As far as starting the engine, it should not be impacted by the key fob battery. The key has a transponder inside that is recognized by the car. The ignition induces an electric field on the key when you insert it to read the code on the key. That's why the key should work to start the car even with a dead battery.