I just bought a 2000 S430. I'm really happy with it, but the automatic windows on both front driver and passenger sides are behaving very strangely!</P>


They roll down fine, but when I try to roll them up, they go up a little, then stop momentarily, then go down an inch or two, then stop altogether. There doesn't seem to be any rhyme nor reason to where they stop or why.</P>


If I keep trying to roll them up, then eventually, usually after 3 or 4 tries, they will finally go on up.</P>


Anyone with any info about this problem or how to fix it would be appreciated!!</P>


Thanks</P>

 

I am having the same problem with a 1999 C230. It just started after the battery was changed. Anybody have any idea onwhere to start checking?

 

I had that problem with my 2001 CLK430 also. </P>


Here is what they had down on the invoice:</P>


"performed DTC read out, no codes. Needs update performed to both door control module. Performed update to both control modules, adjusted windows to spec. function tested-ok."</P>

 

same problem with my s500 2000

 

Changing the battery causes the windows (which have a auto up function to loose sync). i think the proceedure is to take the window up by going to thesecond detent and then holding for about 2/4 seconds. I know this works on the earlier models 92 and up. I have done it and so has the tech at MB when they replaced the battery</P>


</P>

 

I also have a 2000 S430 and love the car and the color it is the silver blue with a light blue leather interior it is beautiful. However the window problem has been persistant.

 

The MB dealer worked on the car recently, and what they told me was that the safety feature, which causes the auto-up function of the windows to stop if a blockage is detected, is what is causing the problem.</P>


Apparently the friction on the window from the track in the doors is causing it to stop going up, because it thinks something is in the way.</P>


I have tinted windows, which they say makes the window just a little thicker and therefore increases the friction, causing the auto-blockage sensor to stop the up motion.</P>


They tried lubricating the window tracks with some special, proprietary MB goop which supposedly reduces the friction. This seemed to work for a short time, but within a day or two the problem had returned. They told me that it can take multiple applications to be most effective, but I haven't taken the time to go back in yet.</P>


Since the treatment, the problem has seemed to lessen somewhat, but not go completely away. In the shop when the goop had just barely been applied, however, they worked perfectly every time. This leads me to believe that friction is indeed the culprit here, and my tinted windows seem to be the cause.</P>


I hope this helps someone out there who was as perplexed by this issue as I was. Thanks to all of you who responded and offered suggestions.</P>


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