Why is the Kia ProCeed's Smart Key not Working?

I have been trying to use the Smart Key feature on my Kia ProCeed, but it doesn't seem to be working. Whenever I try to unlock the car, the button on the door handle does not respond. What could be the issue?

It is possible that the battery in your Smart Key is running low. Try replacing it with a new one and see if that solves the issue.

Have you tried using the secondary remote key? It is possible that the primary one is damaged.

Check if your Kia ProCeed has a feature called 'Passive Entry'. If it does, make sure it is enabled in your car's settings.