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Old 02-26-2020, 10:09 AM   #13
78F350
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Join Date: Jul 2014
Location: Oklahoma
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There is troubleshooting for the top relay in the manual, but I haven't found anything similar for the window. Since removing the relay makes the windows work, give this a try. I found a copy of the info from the manual posted on Justanswer . com

Here's the link: https://www.justanswer.com/porsche/3vq2d-own-2004-boxster-s-the-top-will-not-go-down-when.html

It shows the pin assignments for the relay carrier and 11 steps to check operation with a multimeter.
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