9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWindow Drop Microswitch Fail
Leading reported evidence
Reconnect i noticed the problem
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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Leading evidence: 'Reconnect i noticed the problem' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is '"regulators"' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Reconnect i noticed the problem' (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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Discussions that suspect a cause
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Suspected cause
If you lift the door handle slightly, and hear the motor activate, yet the window does not drop, then the problem is the "regulators"..
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Suggestion · Original poster
I followed the instructions to reset the microswitches - push window down 10mm.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
One suggestion to try first - reset the window(s) limit switches.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T024951Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Greetings all, question on a 2004 C4s: both windows (the partial drop mechanisms) seems to have failed on both windows at the same time. Is there a separate fuse for these? Windows otherwise works fine, just the 10cm drop upon door opening does not work. I can manually push the windows down and they will automatically raise when the doors are closed so its only the lowering movement that is not working. Possibly a fuse that I cannot locate or would it be a microswitch? I find it strange that both quit working at the same time.
If you lift the door handle slightly, and hear the motor activate, yet the window does not drop, then the problem is the "regulators"..
Common problem , just search "window regulator DIY" and you will find all the info you need.
Cheers !!
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One suggestion to try first - reset the window(s) limit switches. Push the window switch down and hold for a slow count to ten after it lowers.. Then push the window switch up. After the window is up continue to hold the up button for a slow count to ten.
I would start here too, if it happened on both sides at the same time. Was the battery disconnected?
It's probably not the problem since you said they otherwise work fine, but it's certainly worth a try.
...and is metric your second language? 10cm is a pretty big drop
Manually push with your hands? If so that�s the regulator that�s worn out. If the motor moves or makes noise when you open either latch then the regulator is not allowing the window to drop.
Update: The battery was disconnected. I noticed the problem after it was reconnected.
I followed the instructions to reset the microswitches - push window down 10mm. Activate and hold switch. Then push up to full close and activate and hold switch. Problem still persists
When I lift the door handle, the window slightly moves and I can hear the regular motor actuate, interior lights come on. The window doesn't drop, it only slightly shifts. All of the door locking functions are working fine. If I can here and feel the window is moving, would it be the door lock assembly microswitch or the window regulator?
Regulator is worn out. It is a cable driven system that relies on the cable being taught to work correctly. When the cable loosens this is what happens.
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