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Old 27-07-2021, 07:48 PM   #1
thesmileyone
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Juddering wiper blades

So I bought a car a month ago and my wiper blades are juddering, at first only on downstroke, since I putting them on fastest speed (where they don't judder ironically) they now judder on both up/down on all speeds except fastest.

Car is a 2017 Audi S3 3 door 8V model.

It seems to have been detailed in the past, it collects wax water droplets and the bodywork looks good when this occurs (beading). But it seems someone waxed the windscreen with some wax that is IMPOSSIBLE to come off.

I have tried the following

- new wiper blades, from Audi, twice.

- autoglym glass cleaner + polish

- T-cut

- jet wash

- vinegar and newspaper, 3x, over a period of 3 weeks

None of these has managed to get whatever is on the windscreen to come off.

It is so bad that if it rains I can't use the car. Not only because of the juddering but because whatever is on the screen collects all the rain drops and then you can't see out of the screen.

At 70mph all the rain runs off the top of the screen like RainX but I've never encountered RainX that behaves like this or doesn't come off with vinegar applied.

I don't really want to have to take it to a detailer who will charge me an arm and a leg to remove it? And a new screen I think is out of the picture as it has auto wipers etc.

It has audi warranty but I'm not sure if this kind of thing is a warranty issue?

Any ideas please? I don't trust myself with a machine polisher / wire wall pad etc.

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Old 27-07-2021, 07:55 PM   #2
Rappy
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Just see the video, what a bloody nightmare!

I never put anything on the glass because of this

You need a heavy cut compound & wool pad on a machine.
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Old 27-07-2021, 07:57 PM   #3
Rappy
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Also, Bar Keepers friend gets good reviews on here

https://www.therange.co.uk/household...ALw_wcB#637251

Only £1.99 from the Range

Last edited by Rappy; 27-07-2021 at 08:05 PM.
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Old 27-07-2021, 08:02 PM   #4
Andyblue
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Might be worth trying Bar Keepers friend (powder version) with a non scratch scouring pad, give it a few hits and make sure you really clean well afterwards, then try AG glass polish cleaner again...

I know a few use 0000 wire wool to aid deep cleaning...
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Old 27-07-2021, 08:29 PM   #5
Del-GTi
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Cerium Oxide. Get it from eBay.

This will solve the problem. I had same issue and it was the only way to get rid of the coating properly. Have a search for a topic I started about wiper blades squeaking.
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Old 27-07-2021, 11:58 PM   #6
GleemSpray
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Barkeepers Friend is epic on glass - it seems to break down everything that is baked /stuck onto the glass when all else fails.

Seriously, it's only £1.99 and works miracles
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Old 28-07-2021, 12:17 AM   #7
Kerr
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What's the other clicking sound in the video? Never heard that in an Audi before.
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Old 28-07-2021, 02:40 AM   #8
thesmileyone
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Thanks, I will try Barkeepers Friend first. There's a Range near so...

How to use it, without a machine polisher / drill?
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Old 28-07-2021, 07:01 AM   #9
BrummyPete
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Quote:
Originally Posted by thesmileyone View Post
Thanks, I will try Barkeepers Friend first. There's a Range near so...

How to use it, without a machine polisher / drill?
Get a wet microfibre, put some barkeepers on it and just work it in, it's great stuff

Sent from my SM-G781B using Tapatalk
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Old 28-07-2021, 09:10 AM   #10
JU5T1N
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Felt pads is what you use for polishing glass, some felt pads and abrasive glass polish should remove it.

Failing that or for a quick fix there's 2in1 glass cleaners around that clean the glass and leave behind a temporary coating, the temporary coating should more the screen slick enough so the wipers won't judder.
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