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Discussion summary
YOUR RESEARCHPassenger window 'twitching' up and down - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported or suspected cause
door latch - they are a common failure point
Suggestion or failed attempt
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Suspected cause
I'd be inclined to suspect door latch - they are a common failure point.
Passenger window 'twitching' up and down - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'door latch - they are a common failure point' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'door latch - they are a common failure point' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace door latch microswitch diy-able' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion · Original poster
Is replacing the door latch microswitch DIY-able for someone with basic skills and tools?
Passenger window 'twitching' up and down - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace entire latch assembly, sadly
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Suggestion
You will need to replace the entire latch assembly, sadly.
Passenger window 'twitching' up and down - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reset window settings
Suggestion or failed attempt
No successful repair reported for this finding.
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Reported fixes
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Suggestion
On boxa.net there was mention of on page 29 owner's manual instructions on how to reset the window settings.
Passenger window 'twitching' up and down - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
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My 1998 2.5 Boxster has developed an issue whereby when the passenger side window is fully up or near the top of the window frame, is starts 'twitch' up and down only slightly (maybe a few mm) but very quickly and repetitively until it drains the battery.
The only way I can seem to stop this from happening is to put the window down a bit which means I can't leave the window up when out, parked, or in the garage. Does anyone know what might be causing this and if so, what I need to do to stop it? I imagine it might be a faulty switch somewhere. The windows also do not drop anymore when the roof latch is released.
Thanks in advance for any help.
That is your door latch microswitch (although possibly the door handle switches as well). Basically, when you open the door, there is a switch on each handle (interior and exterior). This tells the window to roll down a smidge. It stays down until the microswitch in the door latch tells it the door is closed. This allows your door to close without the window smashing the frame.
What has happened is one of the microswitches is worn, and it is bouncing "open"/closed, causing this.
Do you have a floppy door handle? If you open the door, and leave it open does the window stay down?
I'd be inclined to suspect door latch - they are a common failure point.
Thanks very much for the message. It's odd because the slight window drop function (when the handle is pulled) hasn't worked for years but the window seems to be seated to both avoid the frame when closing, and to stop any ingress of water/rain. So the twitching is odd because that function hasn't even worked for a long time. The window drop on the right hand side works but the window is seated too high so hits the frame when closed.
The passenger door handle does not seem floppy. If I oped the door, the window remains in place no matter whether up or down. Is replacing the door latch microswitch DIY-able for someone with basic skills and tools? Thanks.
You will need to replace the entire latch assembly, sadly. It’s not particularly difficult, but it is rather expensive, considering that the only piece which has failed is far from that.
This is a source reference. Confirm exact model applicability in the original material.
