I went to the dealer today. Two of my sensor controling the gas to the engine do not work. The gas rushed to my engine at any speed, and it was dangerous to my engine. They cost me 500 bucks to replace them:mad: ..... but I get one year warranty for the replacing part.
I called your number today. You were not at home. I changed three sensors, left, right and back, cost me 750 CAD plus tax in Hyundai dealer. Right now, everything goes very well.
One of my local friends say it is too cold and dirty in Canada and cause the sensors not working. It is very rare that three sensors did not work at the same time. You can wait until this Summer and see what will happen.