Hi everybody I'm Craig with a e60 520d 2009. looking for some advice as to why my wipers dont work as they should. I press the stalk in for intermittent use and the light comes on the stalk, the wipers work for one wipe then they stop. I can adjust the setting for sensitivity which activates the wiper one time again then nothing green light still on and no other movement of the blades. all other wiper functions work as the should. any help or advice would be appreciated. Thank you