Sell it. Sell it now.

My 2015 Sorento developed the same issue, and the engine suddenly seized about 20k miles later. No warning lights, nothing - I was driving down the road and lost power. The engine fully seized and wouldn't even turn over. Ended up being a $8k repair all told, and I was extremely lucky to even find a crate engine for it. Three mechanics shops couldn't source one and I ended up having to find one myself.