I have a 2013 santa fe...hopefully someone has some insight..this is the issue:

Door open light (front passenger) is on on the dash. I can't lock doors when i'm inside the car, if I press the button they lock but then unlock again. Button on outside door handle does not lock or unlock the doors, I have to use my key fob. So using my key fob I can lock my car once i'm out, but my alarm wont arm.

So i'm not sure if this is a sensor issue, a handle button actuator issue, an alarm issue or what

anyone have thoughts?