G63 Windshield Wipers Sticking
I have a 2021 G63 and I’m getting some stuttering from the driver-side (left) wiper at the lowest intermittent setting. At higher speeds it’s completely smooth.
So far I’ve tried:
- Clay bar the windshield
- Wiped down the glass and wiper blades with IPA (91% diluted ~50/50 with water)
- Finished with a ceramic quick detailer on the glass
At this point I’m wondering if the windshield needs a proper glass polish. I bought the car used with ~36k miles, so it’s possible the glass has some mineral etching or embedded contamination from (possibly) sitting outside that clay/IPA isn’t addressing.
Has anyone dealt with this on a G-Wagen and found a solution?
Appreciate any feedback. Thanks.



Just doublecheck you're NOT applying the ordinary WD-40 lubricant as that can ruin your blades as it is not water soluble and would gunk up the wipers' operation. Hope this helps.




I have a 2021 G63 and I’m getting some stuttering from the driver-side (left) wiper at the lowest intermittent setting. At higher speeds it’s completely smooth.
So far I’ve tried:
- Clay bar the windshield
- Wiped down the glass and wiper blades with IPA (91% diluted ~50/50 with water)
- Finished with a ceramic quick detailer on the glass
At this point I’m wondering if the windshield needs a proper glass polish. I bought the car used with ~36k miles, so it’s possible the glass has some mineral etching or embedded contamination from (possibly) sitting outside that clay/IPA isn’t addressing.
Has anyone dealt with this on a G-Wagen and found a solution?
Appreciate any feedback. Thanks.
2024 G63, driver side wiper stutters on lowest speed only (first click) - works perfect on faster setting. I took the car to dealer, and they installed new blades. It worked for 5 minutes and then came right back. I called my SA yesterday, and she said they have to clean the windshield with a special product. I asked why that wasn't done when the new blades were installed and she did not have an answer. She did mention its a super common issue on the G63.
I also tried Rain X. I cleaned the windshield thoroughly, applied as directed, and that too worked for about 5 minutes.
I have a strong suspicion that the blade tension spring is way too tight. I tested tension on my wifes 2024 RR vs the G63 and you can feel the tension is a ton lighter on the RR. I have to take a closer look and see if that can be adjusted, I'll report back. Likely the "special treatment" the dealer wants to apply is a Rain x type lubricant which makes sense. You can test the theory easily. When you're in the first setting and you're getting chatter, hit the windshield cleaner button for a half sec so you get just a spurt of soap on the windshield and voila, chatter goes away for a few seconds/min. The issue is lubrication and possibly too much tension.
Working on mine this morning, I'll let you know how it goes.
I have a 2021 G63 and I’m getting some stuttering from the driver-side (left) wiper at the lowest intermittent setting. At higher speeds it’s completely smooth.
So far I’ve tried:
- Clay bar the windshield
- Wiped down the glass and wiper blades with IPA (91% diluted ~50/50 with water)
- Finished with a ceramic quick detailer on the glass
At this point I’m wondering if the windshield needs a proper glass polish. I bought the car used with ~36k miles, so it’s possible the glass has some mineral etching or embedded contamination from (possibly) sitting outside that clay/IPA isn’t addressing.
Has anyone dealt with this on a G-Wagen and found a solution?
Appreciate any feedback. Thanks.
https://windywipers.com



I would suggest going with @Ronin's recommendation above with "WD-40 Specialist Silicon Lubricant". He had recommended it to me about 3 years ago for my other vehicles even before I picked up my G63. Full disclosure - we found out our respective families were close friends after we both signed on to MBWorld platform - it's a small world after all...
Regular WD40 is petrol-based, while WD-40 Specialist Silicon Lubricant is not. I apply it religiously twice a year to each of my vehicles on all door and window trimmings, gaskets, hinges and wiper blades. It works like an absolute charm. Just make sure you wash both the windshield and the wipers (including blades) with warm soap and water so the formula would have a clean contact with the targeted area which should be completely dry. Thereafter, wipe off all the excess. Here's an Youtube video I found, but you can find plenty more there:
My Alfa 4C, for instance, is the King of Noises. I get rattles and noises from places I can't even locate. However, after each application, 99% of the noises magically disappear.
I know for DIY fixes, everyone has a different opinion. We also tend to overthink things when the solution is quite simple. This one, however, has worked for me on all of my cars for years.
Good luck, and stay safe!
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2024 G63, driver side wiper stutters on lowest speed only (first click) - works perfect on faster setting. I took the car to dealer, and they installed new blades. It worked for 5 minutes and then came right back. I called my SA yesterday, and she said they have to clean the windshield with a special product. I asked why that wasn't done when the new blades were installed and she did not have an answer. She did mention its a super common issue on the G63.
I also tried Rain X. I cleaned the windshield thoroughly, applied as directed, and that too worked for about 5 minutes.
I have a strong suspicion that the blade tension spring is way too tight. I tested tension on my wifes 2024 RR vs the G63 and you can feel the tension is a ton lighter on the RR. I have to take a closer look and see if that can be adjusted, I'll report back. Likely the "special treatment" the dealer wants to apply is a Rain x type lubricant which makes sense. You can test the theory easily. When you're in the first setting and you're getting chatter, hit the windshield cleaner button for a half sec so you get just a spurt of soap on the windshield and voila, chatter goes away for a few seconds/min. The issue is lubrication and possibly too much tension.
Working on mine this morning, I'll let you know how it goes.
Vazha - Literally my exact issue. What was the outcome?




