how can i fix my wiper blade ?

my wiper blade keeps staying in the middle of the window when i turn my ignition on and when it is put on ittermittet setting, car is c200 classic mercedes cant drive til i fix it please help
tania, September 2011


done
Has the mechanism ever been lubricated. I used to do mine every couple of years.

See:

http://www.youtube.com/watch?v=XCVhpeDLUHY&NR=1

ChicksFan, September 2011
link Click here to see other fixes for Mercedes.