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Window lowers upon opening passenger's door but fails to raise after closing door

  • 2006
  • Cayman S
63 500
Electrical and Electronic
New Market, 

My 2006 Cayman S has developed a peculiar problem with its passenger's side window.  Upon opening the door, the window retracts 1/4 inch or so, as designed, but then after that door is once again closed, the window fails to rise to its fully closed position automatically.  I have repeatedly attempted to "reset" the actuator in the hopes that some sort of a software logic error (e.g. improper variable for window position, improper window state variable being returned, etc.) but to no avail.  I am forced to return the window to its proper location using the window control switch on either the driver's or passenger's door and so I deduce that for some reason, the command to "close" the window is either not being sent or not being received by the actuator.  I've spoken to my mechanic about this problem and we have both researched the issue, attempting any and every described fix without success.  The mechanic, who is a very knowledgeable and experienced with a wide variety of models at his Porsche-only facility, has concluded that the cause must be a faulty actuator motor, however, I disagree.  To me, if the actuator was faulty, it either would not functional all or it would, at the very least, manifest in ways more than just this single and very specific quirk.  I cannot justify the expense of replacing the actuator and hoping that it fixes my problem, especially since it is more of an annoyance than anything else; I am able to close the window completely after the passenger's door is closed using either of the door switches. With that said, I would really like to identify and correct this "feature" that my beloved Cayman has developed during the past year or so.  Do you have any recommendations for how to definitively diagnose the cause of the problem and hopefully repair it myself?

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