94 C220 Wiper problem
 

A friend of mine owns a 94 C220...recently his wiper was wiping then all of a sudden slowed down and stopped near the middle and made clicking/grinding sounds. Does not work at all now. Im guessing its the motor or could be something simple?

Thanks...maybe it needs greasing otherwise it could be cooked!

I have to grease mine soon too....works good but I want to prevent it from breaking.