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jags320i
Newbie


Joined: 31 Aug 2017
Posts: 15



PostPosted: Thu Jan 10, 2019 8:00 pm    Post subject: Smeared Windows / Window Seals Reply with quote

Guys I need some help on this as it is doing my head in!

Car in question is a 2007 C4s with 60k on the clock.

The issue is whenever I wash/detail the car and I lower the windows a few days later (even though it's been dry outside) I notice that there are smear marks left on the outer side of the windows. This is happening on both driver and passenger windows.

The other day I cleaned the seals by using a spatula and a micro fibre cloth dipped in some vinegar and ran it through between the window and the seals hoping to clean and grease or dirt which may be causing this but no luck.

Has anyone else experienced this issue and what was the solution?

Here are some pics:

The spatula which I used to run through between the window and seals:


The dirt on the MF cloth after cleaning the seals:


The smears left on the windows after using them a few days later (They run up all the way to where the window was opened to):





Thanks in advance!
 
  
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TonyC911
Spa-Francorchamps


Joined: 06 Jun 2016
Posts: 272
Location: High Wycombe, Bucks


PostPosted: Thu Jan 10, 2019 8:30 pm    Post subject: Reply with quote

Ooh... good one! I get this on my 911 and 3 series coupe!

Pop Corn
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FZP
Sepang


Joined: 18 Jan 2015
Posts: 2949
Location: Cheshire


PostPosted: Thu Jan 10, 2019 8:53 pm    Post subject: Reply with quote

It would be easier to ask who doesn't experience this. It's the German engineers way of playing a joke on the rest of the world.
http://911uk.com/viewtopic.php?t=100772&highlight=smearing
Something for you to read in the thread.
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pzero
General
General


Joined: 18 Jul 2010
Posts: 5088
Location: London


PostPosted: Thu Jan 10, 2019 9:01 pm    Post subject: Reply with quote

Yep, some more reading here;

http://www.911uk.com/viewtopic.php?t=109433&sid=0e6e6d102f42059cfb83fb3575a261ab
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drmark
Silverstone


Joined: 07 Feb 2009
Posts: 124



PostPosted: Thu Jan 10, 2019 9:57 pm    Post subject: Reply with quote

You are stuck with it. We have had two 997s for nearly 12 years and constant smears.
 
  
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MaxA
Barcelona


Joined: 11 Oct 2015
Posts: 1390
Location: Helsinki


PostPosted: Fri Jan 11, 2019 6:56 am    Post subject: Reply with quote

It is particularly annoying that I need to drop the window to swipe my access card to get into the office car park as the window is rendered opaque every single day... twice a day.
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Last edited by MaxA on Fri Jan 11, 2019 10:29 am; edited 1 time in total
 
  
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NLW73
Barcelona


Joined: 27 May 2014
Posts: 1360
Location: Yateley


PostPosted: Fri Jan 11, 2019 9:01 am    Post subject: Reply with quote

i have the same.....glad to hear others have it but at same time it annoys the scheit out of me

I have tried to clean it all and taken it all apart but no luck

i just keep a couple of microfibre cloth in each side now in the pocket where the elbow sits and that helps my OCD.....until I open the window again

Sad Dont know
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Jam911
Barcelona


Joined: 31 Oct 2010
Posts: 1435



PostPosted: Fri Jan 11, 2019 10:42 am    Post subject: Reply with quote

I had the seals replaced under warranty
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jags320i
Newbie


Joined: 31 Aug 2017
Posts: 15



PostPosted: Fri Jan 11, 2019 10:59 am    Post subject: Reply with quote

Hi guys,

Thank you all for your responses...

Jam911 wrote:
I had the seals replaced under warranty

Did this solve the issue? I've had a look prices on the seals and they are around £100 each which is not bad and I'm pretty sure changing them over is a DIY job.

Having read the links and doing some further research all fingers are pointed to the window regulators as the culprit. There was a post put up on the forum where it set a guy back £700 for each door/window!

That is a lot of money to have clean windows! I'm struggling to understand to why the regulator would be the cause of this as one would assume it would be something like seals etc....?
 
  
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drmark
Silverstone


Joined: 07 Feb 2009
Posts: 124



PostPosted: Fri Jan 11, 2019 2:31 pm    Post subject: Reply with quote

Jam911 wrote:
I had the seals replaced under warranty


So did we, but guess what....
 
  
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Magic919
Österreich


Joined: 05 Jun 2013
Posts: 970
Location: Berkshire


PostPosted: Fri Jan 11, 2019 4:54 pm    Post subject: Reply with quote

I presume it’s just stuff from lower down in the door, maybe the metallic membrane, that smears on the window. Can’t say I’ve ever had it fixed and gave up trying.
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5923
Location: Brighton


PostPosted: Fri Jan 11, 2019 6:42 pm    Post subject: Reply with quote

Ill just add .. window seal is a possible but if the streaks are in the middle of the window ...

Part of the regulator is a bowden cable .. a wire in a tube basically .. it has a rubber outer layer on it in the middle of this cable .. it SHOULD be clipped to the door panel but if it comes loose it will rub against the window .. it will get wet like everything else in the door and causes smears .

No way of finding out unless you remove the door card / membrain or inner panel.

This is only for a smear in the very middle of the window though .

Basically other than the top seal there is nothing in the door that will touch the window .
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s70rjw
Spa-Francorchamps


Joined: 26 Nov 2014
Posts: 323
Location: York


PostPosted: Fri Jan 11, 2019 8:00 pm    Post subject: Reply with quote

Try a deep clean of the glass, both in side and out. Use a claybar and magic eraser type sponge lubricated with car shampoo. Dry thoroughly and add a layer of wax or sealant. This prevents streaks for a couple of months.
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jags320i
Newbie


Joined: 31 Aug 2017
Posts: 15



PostPosted: Mon Jan 14, 2019 11:35 am    Post subject: Reply with quote

deMort wrote:
Ill just add .. window seal is a possible but if the streaks are in the middle of the window ...

Part of the regulator is a bowden cable .. a wire in a tube basically .. it has a rubber outer layer on it in the middle of this cable .. it SHOULD be clipped to the door panel but if it comes loose it will rub against the window .. it will get wet like everything else in the door and causes smears .

This is only for a smear in the very middle of the window though .

Basically other than the top seal there is nothing in the door that will touch the window .


I'm coming think that it most probably the window seals themselves.... Here are some more pics of the smears which run across the whole window... As you mentioned the window seal is the last thing that touches the window once the window comes out of the door:

Any further thoughts?



 
  
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Jake911
Trainee


Joined: 04 Nov 2017
Posts: 97



PostPosted: Mon Jan 14, 2019 12:18 pm    Post subject: Reply with quote

Floor I thought it was only me. This issue was driving me mad.............so mad I stop putting my window down nooo
 
  
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FZP
Sepang


Joined: 18 Jan 2015
Posts: 2949
Location: Cheshire


PostPosted: Mon Jan 14, 2019 12:27 pm    Post subject: Reply with quote

I didn't even notice the smears. My eye was drawn to the exquisite colour of your interior Bandit
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5923
Location: Brighton


PostPosted: Mon Jan 14, 2019 7:09 pm    Post subject: Reply with quote

Thats the top window seal im afraid .. its also very common .

If the seal is wet though .. say after washing the car then it will streak , theres not much you can do other than let it dry out ... 2 days and it should be dry .. other than that an air line .. blow along it to remove the water .

To be honest .. i cant remember what they are like when new so a new seal might lessen the effect Dont know
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