I have a 2012 Kia Optima with a push start. For the past year, when I go to start the car, it clicks a couple times but will not start. My battery is good. When I push the Start button the dash lights come on but makes a humm noise but won't start. If I press on the brake pedal and put the shifter in reverse and back to park and push the Start button it starts. Wondering if it's the starter or clock spring, or something else? Only happens once or twice a week which makes me think it's not the starter. Any thoughts? Thank you.