[Spacebug]

^ I was wondering that too.

I have to say that my even if my window is clean they do not improve. I am pretty obsessive about keeping the car clean (ignore the state of my car in pictures in my reversing sensor post...).

I tried the on - off - on trick the other day without any improvement.

I also don't think I can see any difference when I slide the 'speed' setting from low to high or vice versa.

May be a duff sensor..