I have a problem with my 2012 E350 windshield wipers. Every time I push the button for the fluid the wipers scrape the windshield a couple of times before the fluid comes out. The car is still under warranty, but the dealer keeps telling me that this is the way it works. I have had two other E350's and never had this problem. Any help will be appreciated.

 

Thanks. I will check it out.