2014 Hyundai Sonata Hybrid window went down on its own

my driver side window went down 3" by itself parked wHAT COULD BE CAUSE

Broken window motor, bad switch, bad relay, bad fuse, broken wire… any of these would cause this.

Get in the car and start it up

Hit the window switch up and down

Is there a LOT of noise coming from inside the door?

If yes, you most likely need a power window regulator