Vehicle lost power steering as it was parking. A message flashed on screen. Throttle surged. Hit a car on left. In an attempt to avoid the car on left, vehicle lunged to the right and hit a second vehicle. -Steering failed. -Two other vehicles were impacted. Steering pulled drivers had and damaged her thumb. Will require surgery. -Body shop confirmed that steering is still not functional after being towed. -Vehicle has not been inspected yet. -Some warning message flashed during the incident but was not visible after.