Thanks, wow, now I am in a quandry, live with it knowing at least the wiper works and I just have to get used to the black line across my vision, or spend the time/money to fix it. I have lived with worse (ie the vibrations from failing motor mounts, squeks from failing air pump, etc. etc.) oh well, i love my benz, i love my benz. I will follow up when I decide or...