Not sure if everyone's familiar what is actually in the Model 3/Y. - The main mode of use is 'auto' which uses as its feedback sensor the forward facing camera

Not sure if everyone's familiar what is actually in the Model 3/Y. - The main mode of use is 'auto' which uses as its feedback sensor the forward facing camera (I think only this location, but not 100% sure about that) located where the rear view mirror attaches to the wind screen. It covers ~75% of my driving without issue. I think there is a problem with that sensor location as the boundary layer gets compressed near the apex of the windscreen, resulting in better mass transport and a drier windscreen than the part the driver looks through. This camera location is thus a laggy indicator of rain because it tends to be one of the driest parts of the car. Personally my experience with the this feature is a good advertisement not to get full self driving yet: If you can only answer the question "Is it raining?" accurately 75% of the time with cameras, you've probably got a long way to go on FSD. - There is a physical button on the end of the left stalk. You press it to get 'wipe once'. If you need to respond quickly to a sudden burst of rain or the driver next to you goes through a big puddle, you can do that without the touchscreen. - The physical button push also brings up the wiper control on the touchscreen, which is otherwise behind one (non physical) button which is always on the screen. The touchscreen controls include manual control of wipers on/off/auto and wiper speed. - There is also voice control which seems to work fine. As with many voice control systems, you have to say a specific phrase, which presents a discovery problem: how do users learn that phrase unless they're the kind of people who search out documentation on the internet. I'd also wager many drivers haven't gotten used to the idea of voice control of car features so they're not well utilized in general. And for your consideration, my opinion: It works fine most of the time (because I just leave it in auto), but I occasionally need to tap the physical button to get an extra wipe. Sometimes when it is very lightly raining I need to manually set the speed since the feedback system doesn't seem to do a good job in that scenario. The touchscreen feels pretty accurate and responsive, so I've never had trouble hitting the button while in motion. I think Tesla should release a software update to let the user 'double tap' the physical button to force the wipers 'on-high' for the rest of the journey.