DerekMB

Hello long story short I had a c300 and now a c450 , my 300 wiper blades were so bad that it went to the extent that they replaced the windshield saying there were grooves in the glass apparently throwing everything off. Now my 450 when sitting inside the left wiper blade every once and a while starts to drag a little, it seems to go away if its raining very hard keeping the window moist or if i spray washer fluid .. any pointers? thanks

rbrylaw

Maybe try something like this. I've always found every new car I've bought came with a film you can't see, but often interferes with the smoothness of wiper blades. Perhaps a really good clean with something like this will easily solve your issue: