Steering Column problems of the 2004 Volvo S40

The steering locked on our 2004. 5 Volvo S40 t5 as my wife and 6 week old daughter were backing out of our driveway under power. No errors were reported when the car started, but the wheel locked (and an error was displayed) after the car was in motion. She stopped the vehicle when she was unable to turn the wheel. She was then able to put the car into drive and move back to her previous position. Clearly a safety sensor did not do its job. Leading up to this event we have had occasional incidents where the steering wheel would not unlock after entering the key. Lightly moving the wheel side to side and repeated key entries would resolve the issue. A motor now runs in the steering column when trying to unlock the wheel. This is a different sound then we experienced when the issue could be resolved. I am very concerned about this incident because the lockup occurred while the vehicle was in motion. This could have resulted in a potentially fatal crash had it occurred on a sharp turn or on the freeway. Please investigate this critical safety issue. I have a video of the issue available if this will assist your investigation.