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Old 04-27-2012, 10:22 PM
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Join Date: Feb 2012
Posts: 10
Back window film deterioration

On my '86 230E the back window film is looking like it's getting moisture in the corners. I am attaching a photo of the problem.
Is there a DIY solution to this? Or do I need to see a specialist?


Attached Thumbnails
Back window film deterioration-photo-7.jpg  
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Old 04-27-2012, 11:16 PM
Yak Yak is offline
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Join Date: Aug 2009
Location: San Antonio, TX
Posts: 1,711
That looks like delamination. Basically the sandwiched layers of glass coming apart.

I think you're looking at replacement.
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Old 04-28-2012, 01:15 AM
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Join Date: Feb 2012
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Oh no! How much time do I have you think?
And what sort of cost are we looking at as a guess?

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Old 04-28-2012, 09:40 AM
Yak Yak is offline
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Location: San Antonio, TX
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I'd think it would progress slowly, if that's the problem, but temperature will have a big effect. On an Acura I had, there was a small crack on the passenger side from a stone that did nothing for months. Then there were a few hot sunny days and it spread rapidly.

Online prices for the glass are in the $250 ballpark. You can do DIY glass replacement, but I'd probably look at paying for new with a good seal. That may be your root cause: moisture getting behind the seal, then wicking into the glass.
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Old 04-28-2012, 08:09 PM
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Join Date: Apr 2005
Location: NE Ohio
Posts: 5,038
Replacement is the best route to go. We had our one 82 300SD rear window replaced by Safelite. It was $350 including the glass and labor.

I purchased a window seal from Mercedes, it was $85 or so I believe.

The window doesn't leak and the glass looks just like the original (fine heater lines) however they didn't do a great job of installing the chrome trim. They had a good amount of difficulty getting the glass to fully seat.

I've got another 300SD to have done in the same manner, however I dont think I'll have them do it. I wasn't all that pleased with the chrome install job.

Cruise Control not working? Send me PM or email ( I might be able to help out.
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(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)

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