Steering Noise problems of the 2012 Ford F-450

Vehicle was initially not running and in driveway. There had been no prior indication of any problem, and no issue noted with on-board diagnostic system. Vehicle had recently been serviced at local Ford dealer for oil/filter change. Dealer inspection noted no issues with the vehicle. Vehicle was cranked up and put into drive. Vehicle experienced a sudden, immediate, and total loss of power steering and brake capability. Vehicle lurched forward. Extreme pressure was applied to brake pedal but it would not stop vehicle from moving forward. Power steering was non-functional causing extreme difficulty in steering vehicle. Vehicle was immediately put into neutral until it slowed enough to put into reverse and stop the vehicle from moving forward. Vehicle almost hit road sign before coming to a stop. Brakes and power steering were non functional. Vehicle was slowly moved backward to get it out of the road path using reverse/neutral positioning. Vehicle was shut off and checked for possible loss of power steering/brake booster system fluid. Fluid level was just below maximum level mark, so no loss of fluid in power steering/power braking booster system had occurred. Upon restart, power steering system was marginally functional with grinding noise coming from power steering/power braking booster system when steering wheel turned or brake pedal applied. Pulsating feel coming from brake pedal when pressure applied. Power brakes were still non-functional. Vehicle was not drivable due to complete loss of braking function and only marginal steering function. Vehicle had to be towed to Ford dealer for diagnostic testing. After 4 days, dealer has still not looked at vehicle.