I haven't been able to get it to work either. I've followed the directions in the manual as you have, but no dice.
I've never noticed it. Then again, it doesn't rain often where I live.Does it bother anyone else that a full sweep of the passenger side wiper deposits all the water right in front of the driver, right in the middle of the driver's field of vision? The water sits there until the next sweep of the driver side wiper. This is more bothersome at night when this standing water picks up reflections from headlights. I don't know, maybe its just me.