While in motion, airbag warning light on dashboard will illuminate. concurrently the passenger airbag indicator light will turn to "off". this happens intermittently while driving. the lights do not go off or return to "on" until the car is restarted.
As driver was parking in front of her home, vehicle accelerated in response to braking and rammed into front porch, about 60 feet away. despite force of collision, no airbags deployed.