The contact owns a 2011 Ford Taurus. The contact stated while driving at approximately 30 MPH and depressing the accelerator pedal while driving uphill, the vehicle stalled. The contact was unaware of any warning lights being illuminated. The contact stated that the vehicle started rolling backward. The contact attempted to stop the vehicle however, the vehicle lost its brakes and the power steering assist functionality. The contact was able to apply the parking brake to stop the vehicle. The contact had attempted to restart the vehicle and observed that several unknown warning lights were illuminated. The contact had the vehicle towed to an independent mechanic. The mechanic had diagnosed the vehicle and determined that the anti-theft system had caused the vehicle to stall. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 160,000.