Electric Power Assist Steering System problems of the 2011 BMW Z4

The contact owns a 2012 BMW Z4. The contact stated while driving approximately 55 mph the vehicle lost power steering functionality. The contact stated that the steering was locked in a slight left turn and he had to apply the brakes to keep the vehicle on the road. The contact was able to pull off to the left side of the highway against a jersey wall. The contact stated that a "steering wheel" yellow warning light was illuminated, and a warning bell was chiming. The contact turned the vehicle off and upon restarting the power steering functionality returned. The contact advised that as soon as he exited the highway the failure occurred again and is a recurring failure. The contact researched the failure and related it to NHTSA campaign number: 12v302000 (steering, electric power assist system). The contact had not taken the vehicle to a dealer or independent mechanic to be diagnosed. The vehicle had not been repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 70,000.