2009 C300 4Matic windshield wiper adjustments...those screws do anything?
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2009 C300 4Matic windshield wiper adjustments...those screws do anything?
Noticed the small slotted screws recessed on the plastic spray housings. Do they adjust the spray pattern Up/Down ? Did a search which claims the system changed on the 2009 and "they are non adjustable" so the prior adjustment tool noted on posts not the right one. One post claimed turning the screw "maybe" changed the spray pattern. What is that screw for if not to adjust ? Thanks for any answers.
Last edited by gamma300C; 10-09-2018 at 09:52 AM. Reason: add