docsout

Before anyone says, get new blades, my question is this. I have new blades and there is still a squeak/scrounch sound when employed in rain. Applying the washer fluid does help but only temporarily. Do I sand the edges? Try wax on blade edges? Anyone else have this problem?

Merserybenze

mine were fine before MB changed them at my service after 8 months of use. The new ones are noisy and have been for a few months now.

superangrypenguin

Use this. It's a little known trick and can extend the life of wiper blades to YEARS.

https://www.goldeagle.com/product/30...ce-protectant/

Nice Ride

Funny, I buy this by the gallon now.... it is great for all weather stripping, doors, trunk, engine bay. This is the only stuff I also use on the tires. It leaves a nice Black Matt Finish, goes on easy. If you want a bit more of a shine, you just give it a second coat. The amount used is so little. the gallon should last several years easy.....

For your wiper issue, I would first Super Clean your glass. Use straight ammonia on the glass only, give it a good clay bar after. Also, MB dealers have a tool to make sure the blades are aligned properly. (arm angle)

SwineHund550

obwielnls

I actually just had my windshield replaced and suddenly the wipers were crazy noisy. Turns out the first aftermarket glass wasn't the acoustic type glass that came with the car. I didn't notice until they came out to replace that glass because it fit poorly. The replacement glass was aftermarket as well but had the word "acoustic" below and clearly had the athermic coating. Wipers are silent again. I was stunned at the difference in the wiper noise that is transmitted into the cabin between the two bits of glass.