mech.man

I was taking a sweeping right turn about 50 mph, started to drift and the car just quit. The steering got very heavy and would not let me turn into the drift and the car lost power until it came to a complete stop. Then I was able to drive off. This was very unsettling to say the least. The Lexus service guy says that they can't find anything wrong.Yes the car has AFS. Any thoughts.