If you take your mo out to a parking lot and try the following you will see the problem.
While going forward at a crawl. spin the steering wheel all the way to the left lock and then all the way to the right lock.
You should be aware that at some point, you went beyond the capacity of the power steering pump to keep up and the steering became very "heavy".
That is what they are talking about and it was on all 5 of the Demos I drove, and the one I bought.
It is a design issue.
It will happen of course, at faster speeds, I just wanted to direct you via a test, that was safe.
Where I run into it, is in parallel parking.
It is a PITA.
You are in reverse and backing up at a reasonable clip and it is time to REVERSE the steering wheel NOW! And the Power steering goes away.
Needless to say, it screws up that attempt.
I realize that I may be the last US driver that knows how to parallel park.
If you don't ever do these kinds of maneuvers, you may never feel it.
Nissan has disclaimed knowledge of this.
So, it costs them sales.
It's their call.
Homer