Tl* the contact owns a 2013 ford f-150. while operating the vehicle, the traction control light would illuminate and the power steering would suddenly malfunction. the steering wheel became very difficult to turn. the power steering failures occurred on multiple occasions and eventually went out completely. the vehicle was taken to an independent mechanic who diagnosed that the electronic power assist assembly malfunctioned. the electronic power assist assembly was replaced and the failure was remedied. the manufacturer was not notified. the failure mileage was 20,000.