Have an 09 ranger, have found that Ford changed the washer fluid wiper sequence on the newer Rangers. When using washer fluid, the wipers go into a preset sequence - 3 wipes, a pause, then another single wipe. This last wipe is called a courtesy wipe in the manual. Am finding that in dry summer or winter conditions, the courtesy wipe smears the windows. Because it's smearing the window, limiting visibility, and distracting the driver I'm finding it annoying. Anybody know how to turn this off? The dealership says it cannot be done, so I'm hoping there's an aftermarket component that can control this. Others have given advice about rain-x (it's an awsome product), or interrutping the courtesy wipe by activating the wipers (a distracting and fiddly thing to do), or even wiring diagram solutions. But what I really want is a replacement part or diagnostic tool that can change the wiper sequence. Any ideas?