I'm curious why you despise them? They are certainly not perfect, but IMO they are better than constantly changing the wiper speed with varying amounts of rain.
You are correct. The "RAIN SENSOR" uses IR to bounce a Infrared signal into the glass to see if there is anything blocking it (water). Our trucks have that sensor mounted behind the mirror. However if you don't have that option. The Mount is there, but the FRIT (Black Ceramic Paint) is covering it. So you can't just pop in the sensor and wire it up and enable it via Forscan.
Because they always seems to come too soon and ramp up to the highest setting too quickly. Its like their goal is to remove every droplet at all times. Maybe im just being picky but unless its a downpour im on the lowest setting or the next level up.
Both my Ranger and my wife's Jeep have them and they drive me nuts. They are never wiping at an appropriate rate, either to fast or to slow. The sensor is looking at such a small section of the windshield it is impossible for them to assess how much rain is falling. I find my self constantly adjusting the sensitivity.
To each his own I guess. While I totally agree they do not always wipe at the optimum speed, my experience has been they do so more often than not, and it is easy to adjust it so that it works as needed. It is a net positive.
