my 07 LE does this...only in summer. hasn't really caused any issues. so i just ignore it.

 

I mean, we did mention it during the sale that we wanted the black residue on the window fixed and it keeps coming back.

Just because it was mentioned, does not mean it was agreed on. Remember you are/were dealing with a dealer, their job is to make the sale nothing more and often less. They have uncanny ways of getting out of just about anything.

Now, there is something you might look at I believe it is a teflon based lube that either goes on dry or dries rather quickly. Use it just on the rubber moulding, whatever you do DO NOT use any kind of petroleum,silicone, or graphite based lubes, they will leave a hell of a mess. A quick google for teflon lubes should get some hits. Something like this might be worth a try.
http://www.homedepot.com/p/Prime-Li...bricant-RZ-50-2AB12/100300231?MERCH=REC-_-PIPHorizontal1-2-_-NA-_-100300231-_-N

 

I don't think you can keep taking it back to get fixed, My windows have this too and it for the most part can be scraped off leaving a very faint sign of it which I could probably just wash off.

To me it just seeps like all the dirt and crud that gets on your windows then gets trapped in that rubber area and just over time causes this.

I am having my car super detailed in a couple weeks and may look into that teflon spray mentioned to see if it helps from coming back. it is rather annoying and just a eyesore when your windows are half down

 

My 09 Avalon windows are tinted, so the line isn't as noticeable, but it does bother me enough that I wipe it off when I'm washing the car.

I work on a lot of vehicles, and any vehicle that has a window that goes up into a weatherstrip has this issue.

 

I use a teflon silicone spray which I apply to a cloth and then wipe on the seal. Keeps the seal from freezing to the glass if you have cold winters too. There are a number of products you can use however.

 

2011 SE v6 18k miles (certified used)

When we bought our Camry a couple months ago one of the things we noticed at the dealership when looking at the car was that all the windows had a black line at the very top of all of the windows. It looks like the window seal is rubbing off onto the windows and leaving this black line of "stuff" on the window.

We mentioned it to the salesman who said that when the car was being detailed, it would be cleaned off.

When we were picking up the car, there was still some of this black residue on the very tops of the windows, where it seals into the door. We said something to the salesman and he personally took a razor and some cleaner and wiped it off.

Here is the problem, it keeps doing it. I'm assuming that the window seals are bad, possibly from the heat? Either way they keep leaving this black residue on the windows which is annoying my wife.

Is there some easy fix for this or should I be contacting the dealership and making them fix it (for free of course). I mean, we did mention it during the sale that we wanted the black residue on the window fixed and it keeps coming back.

Thoughts?

My 2010 does this in the summer. The hotter and more humid it is, the more it does it. The biggest problem is that when lowering the windows, especially the front windows, they are "glued" to the weather striping. They make a loud pop as they unstick themselves. The black stuff comes off easy with glass cleaner and/or lighter fluid. But I will try some teflon lube.