Good question, the 2012 Ford Explorer I drive for work has digital assist steering and went out on me twice as in stopped working which turns that particular model and year into a vehicle without power steering, power brakes, & turn signals. No kidding, the first time it went out on me at less than 10,000 miles I was on the interstate driving 70 mph or so and all my dash lights come on and a bell starts dinging and I have no power steering or brakes, I was on a curve. I am not sure that my wife or a fragile elderly person, etc. would have been able to keep it around the curve. I am old enough to have driven plenty of vehicles without power steering and that is the only reason I believe that I didn't crash in the middle of that curve surrounded by traffic. The other time was in the city going straight, it is a sucker turning that wheel though, brought back some memories. LOL. Regardless, two trips into the shop, two replacements. The last 65,000 miles have been trouble free. I have about 85,000 on the explorer now. So at least is seems GM was smart enough not to tie the steering, breaks, and turn signals into this electronic module. LOL.