Starter will not engage

What is your question?

Sounds like the starter motor runs without turning the engine over for about 15 seconds and then stops on its own.

What makes this problem better or worse?

Tried starting in both Park and Neutral. Same results.

How long has your 2013 Kia Sorento had this problem?

Today Used car today, parked it and tried to start 20 min later, problem