6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHDouble beep on unlock
Reported or suspected cause
drivers door lock mechanism, changed
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
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Discussions that report identifying a cause
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
Had the same issue, it was the drivers door lock mechanism, changed that and all was well.
Leading evidence: 'drivers door lock mechanism, changed' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'drivers door lock mechanism, changed' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check scuttle drains are clear' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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 report identifying a cause
1
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Reported cause
This one fits the passenger door, had exactly the same issue and found it was the passenger side.
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
I replaced the drivers door one first, which improved things massively, but still got the odd double beep.
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
1
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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
1
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Suggestion · Original poster
No doubt it'll crop up again in which case I'll replace the drivers side first and go from there.
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.
6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 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: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi on my '99 C2 996 getting double horn beep on unlocking the car. Latch also makes a movement noise immediately after unlocking. Almost like it's attempting unlock twice.
Reading forums this suggests the open position micro switch in the latch is not functioning.
Any idea how I tell if it's the passenger or driver's side latch to replace?
I greased the latch on both sides to ensure they are moving freely and everything looks spot on.
You'd expect to be drivers as gets more use but guess could be either.
Passenger side does need a new window regulator ( really annoying as the drivers side was a pain in rear end to do) so I'm hoping it's that one so I can kill two birds.
Thanks
Without having access to PIWIS, it's a guess, but drivers side is the most sensible. Both will be tired if original though.
I had this and both were worn. I replaced the drivers door one first, which improved things massively, but still got the odd double beep. I then did the passenger side and it's been fine ever since.
At the time, there were some cheap £28, MK1 Audi TT parts with 9 pins on Ebay, which were spot on for my 98 C2 cabrio. Lately though, they seem hard to find and often are for left hand drive cars.
The fault on mine was obvious. There's a plastic cam which turns and presses the button on the microswitch sensor. Over 20 years the cam wheel had worn, as had the button on the microswitch. So it was barely connecting when pressed.
Had the same issue, it was the drivers door lock mechanism, changed that and all was well. My drivers window also developed a mind of its own and wouldn't stay dropped when I wanted to close the door.
https://www.ebay.co.uk/itm/333460759635
This one fits the passenger door, had exactly the same issue and found it was the passenger side. You need to cut off part of the red tab, but if you search the internet it will give the detail.
Thanks guys really appreciate the responses.
I stuck the c-tek battery trickle charge on Friday morning and left it till today to remove. Strangely the beeping has now stopped and the unlock appears fine. I'm wondering if the battery was a bit low which was causing the problems.
Have been out driving the car today for about 4 hours, nice weather inbetween a few showers. No issues with the lock at all.
Going to keep an eye on it. No doubt it'll crop up again in which case I'll replace the drivers side first and go from there.
Check your scuttle drains are clear? My other non-Porsche had all sorts of weird electrical problems eg central locking that would lock then immediately unlock and power steering that would go dead for a millisecond then come back, eventually worked out that the electrics were getting wet after washing/rain and since I cleared the outlets all issues have disappeared. The OBD was reporting no issues.
A cheap and easy check to do, worth having a look.
HTH Ray
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