Left/drivers side automatic door actuator failed, door would not open and actuator had to be replaced. Mechanic notes available upon request. Safety risk as door could not be accessed for evacuating the vehicle in the event of an emergency. Notification was issued from the manufacturer that this has been a concern in this model, but manufacturer did not replace it. The vehicle was independently inspected before replacing, and replacing the actuator remedied the issue. There were no warning signs or symptoms prior to failure.