I was driving about 30 mph down hill on a city street, when my car started to flash a power steering error message, i was no longer able to brake/steer the vehicle as normal which almost caused me to crash into the vehicle in front of me. the vehicle allowed me to get to a place of safety with extreme difficulty steering and braking. the vehicle stopped and shut off still flashing the warning message. once the vehicle stopped i could no longer start the vehicle.