But it's not just the sensor, which would be inconvenient. The lack of control makes it *dangerous*. You have to push the button in _slightly_ on the left stalk, which makes the wipers go once. And then you have to push the left scrollwheel left or right (but not up or down!) to turn the setting up or down, while staring at the bottom left part of the screen to figure out what setting you're on. All of this takes your eyes much further away from the road, while driving in more dangerous conditions with reduced visibility.
If any hardware manufacturers are listening, I'd gladly pay $200 for an aftermarket part that lets me control my goddamn wipers.