The contact owns a 2011 Ford Explorer. The contact stated that while his wife was driving at an undisclosed speed, the driver became aware that the electronic power steering was not functioning properly, requiring increased effort to maneuver the vehicle. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The power steering warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the electronic power steering assist rack. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 14V286000 (Steering); but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 185,000.