Brand new truck with rain sensing wipers. rain sensing function does not work. first time it rained the wipers would not swipe to clean windshield. the only functions that would work were hi and off and when you turned the wipers off they would stop at random places like directly in the middle of the glass. the rain sensing positions (between hi and off) would mostly do nothing but occasionally would do random things, none of which helped clean the windshield (either not enough swipes in heavy rain or too many swipes when it wasn't raining). there are settings in the software to turn the rain sensing off but it had no effect. we took truck to dealer. they replaced switch assembly fl3z*13k359*bc. had no effect. wipers still act the same. this, in my opinion, is a safety hazard, because you cannot get the wipers to swipe properly when needed for one, and also when you finally turn them off they routinely stop directly in the drivers line of vision. also there appears to be no manual backup.