This is all third-hand info, per a poor-connection pbone call from my brother, whose daughter had a minor front bumper accident:
Vehilcle is a 2016 Jeep Compass.
Apparently, following the accident, she turned the hazards on and got out. Since then, they have not been able to get the hazards to turn off. The hazard switch does not feel broken. The car starts and runs, and other features (headlights, ???) work. The Check Engine light (and any other dash warning lights) are not on.
Any thoughts would be appreciated.