My 2014 Kia Optima SX Turbo has been making a grinding noise when I try to start it. I push the button to start it and it starts making a grinding noise over and over but the engine doesn’t start. I push the button again to turn it off and then push it again to start it and it starts just fine, no grinding noise. I took it in and they said my battery, alternator, and starter are good. My serpentine belt did need to be replaced which they are doing right now. Has anyone else had this problem and have any insight on what could be wrong?