My wife’s '08 IS350 has auto windshield wipers. When in the auto mode (1 click down)... how should they operate? Where should the "auto" line on the moveable part of the **** be pointed at? They seem to work... but they do not come on soon enough, nor do they seem to speed-up as the rain increases.. Is it an adjustment issue, or do I have them set incorrectly?

 

There would be some delay - the rain has to be hitting around the sensor area. You could probably test it with a water hose .

 

From previous experience with auto rain sensors, it speeds up as you drive faster. And of course, with more rain. It also slows down when you're at a stop. I don't have this feature on my IS but that's how they generally operate

 

There should only be one way to set the auto feature for the wipers, and that is with 1 click down. The other auto line your referring to I believe is for the auto headlights?

 

Her’s has both auto headlights and rain sensors... but they are on different stalks.. to engage the auto rain sensor, from what I understand, you have the wiper stalk 1 click down in the “auto position" but the end of the stalk still rotates and has the word "auto" on it with a line beside it. Just wondering what that effects? It does slow down when I stop, but doesn’t come on early enough or speed up fast enough for my taste… Just wondering if it is a setting… or am I doing something wrong..

 

Rotating the sensitivity towards you (counter-clockwise from the end of the stick), increases sensitivity. Rotating clockwise (away from you) reduces the sensitivity. The owners manual also has information about this (fyi). I believe there is also a permanent sensitivity increase also (not using the ****), although I'm too lazy to look it up atm