Hyundai Accent Crank Sensor

If you've got a hex bolt holding in the sensor, just swap it out. No fuss, no muss. If it's got the #3 phillips screw holding it in, you'll have several choice words while trying to remove the screw. If this is what you have, I've had the best luck selecting an appropriate socket, hammering it onto the screw with and extension and loosening the screw that way if using the cross in the screw wouldn't work (usually doesn't).

Thanks for that ! Silly question ... where exactly is it ? And you don't have to be careful positioning it ? Thanks for your help.

It bolts into the front of the block near the transmission. Just make sure the old o-ring comes out with the old sensor so you don't double ring it.