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Hot!Drivers side window operating by itself!

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Stubob1949 PCGB Member
2023/11/21 11:09:16 (permalink)

Drivers side window operating by itself!

I have Recently encountered this problem when opening the drivers door the window drops then moves up and down again repeatedly I tried the re-set procedures of holding up down for ten seconds but the problem still persists. I also find that holding down the drivers window switch triggers the rear near side (passenger) window open! Similarly doing the same with the passenger front window triggers the drivers side rear window! In addition,the side door lights fluctuate occasionally when this sporadic window opening/closing occurs. It’s baffling as I don’t know where to start looking for the reason, micro switches I guess but I believe there are two in either door. The passenger door seems error free though. Any ideas as to what could be the cause?

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Motorhead PCGB Member
Re: Drivers side window operating by itself! 2023/11/21 13:07:33 (permalink)
The window motor appears to be working OK Stuart, so it sounds as though it could be a window module or micro-switch-related issue. A lot of components are interrelated via the CAN bus electrical system, which probably accounts for the strange occurrences you’ve noted, and the system appears to be very sensitive to low voltages on the modern cars, so it’s important to keep the battery in tip-top condition and certainly on a battery conditioner if the car has little use.

987.2 Cayman S
North Beds (R10 & R24)
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Stubob1949 PCGB Member
Re: Drivers side window operating by itself! 2023/11/21 14:48:47 (permalink)
Hi Jeff,
yes I was thinking it may be something to do with battery too as a while back it went flat but I've since had the car on charge via a conditioner
and have it on charge now.So far I just tried opening the door and holding the handle open and the movements stop! If I subsequently let go of it the movement starts up again So this maybe is pointing to the door handle microswitch. I shall try this out a few more times before I bite the bullet and order a new switch. It seems quite a complicated palava to get at the internals of the door and also disconnecting the battery is required c/o the airbag. If I do opt for this it will only be when the weathers better 
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