Door chime 2014 E150
 

I just picked up a used 2014 cargo van. For some reason when I open the driver's door it chimes like there is a key in the ignition, but there is no key in ignition, lights off, it is in Park, engine off, etc. Any suggestions to fix this? I will hopefully disable the whole chime eventually, but wanted to make sure this wasn't some problem I need to address first. Thank you.