Window squeak
I've heard about products that people have put onto the rubber. Any recommendations?
Also experiencing same problem, but oddly the vibrating sound isn't always there, just occasionally...
My E350 is only a few months new and already has two perfectly vertical scratches on both driver and passenger side windows, suspect it has some correlation with the contact with the rubber....
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If it comes back, I will try the silicone lubricant advice.
My chattering wipers (from another thread) have been fixed by replacing with new wipers. I had thought that they would have done this as part of the CPO certification process but apparently not since they cost $70 and sales doesn't want to eat that unless necessary... Anyway, they were replaced at no cost given that I bought the car about a month ago!



