The contact owns a 2012 Ford Fusion. The contact stated while driving at an undisclosed speed, the steering wheel seized. There was no warning light illuminated. The contact stated that the steering wheel became difficult to turn. The vehicle was towed to the dealer, where it was diagnosed that the steering gearbox had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was not available.