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strange issue with window switches (during regulator replacement) 996

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hi all.


i'm a bit stuck. i just replaced my window regulator and was in the process of adjusting it so that it closes properly when suddenly, my switches stopped working.


It's strange because both my passenger side and driver side window switches dont work (i was only working on the driver side regulator), but both windows go up and go down when I open / close the doors. I whipped out my multimeter as well to test the switches to make sure they're getting juice and im seeing 1.57v from one contact to ground (is this normal?).


Anyone have experience in this issue? I checked the fuses as well, everything seems in order. I just need to be able to lower my window so i can loosen the bolts and adjust.


Thanks in advance



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Did you do the re-teaching process on the windows to "teach" them their limits again?

No, was still aligning the window to fit horizontally since there was massive gap between rear quarter window and main drivers window. Re-teaching was next on my to do list when the switches stopped functioning all together.

Now that I think of it, both window switches stopped working right after I raised the window to the highest position and closed the door to check alignment (i can confirm microswitches and regulator work as window goes up when door is closed and down when door is open).

Battery is fine. I started the car and let it run for 15 min to ensure battery was charged. I'm leaving battery disconnected for a few hrs to see if it might reset some setting in the ecu.

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  • 1 month later...
  • 1 year later...

Ok, here's a strange Saturday. Last weekend I replaced the driver's side window regulator with a new genuine Porsche part. My ride is a 2003 c2 cabriolet by the way. I had removed the old regulator which was trashed before opening the new one. Turned out the new regulator had a crack in one of the green plastic ferrules. Having no other option, I installed it anyway. Worked perfectly. I was concerned about the crack though, and contacted the seller. They sent me a new replacement. I installed the new genuine Porsche regulator today. Then the window would only raise about halfway. I tried everything I could find but to no avail. I therefore took out the uncracked regulator and reinstalled the cracked one. Now the window once again works perfectly. Any ideas on what the heck is going on? Any thoughts on this greatly appreciated.

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