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Alarm/Locking System Malfunction

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Original source

2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHAlarm/Locking System Malfunction

Leading reported evidence

Install k40 radar detector (but

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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 performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
I have all factory equipment except a dealer installed K40 radar detector (but that has been operating flawlessly since '99).
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Alarm/Locking System Malfunction

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Leading evidence: 'Install k40 radar detector (but' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install k40 radar detector (but' (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.

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1 matching discussions · 2 captured posts examined · 0 partial discussions

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Run )

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
On one occassion, the horn started sounding when my passenger opened the door while I was parked in neutral (engine running).
Original post Read captured discussion
Alarm/Locking System Malfunction

Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Install k40 radar detector (but

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
I have all factory equipment except a dealer installed K40 radar detector (but that has been operating flawlessly since '99).
Original post Read captured discussion
Alarm/Locking System Malfunction

Run )

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
On one occassion, the horn started sounding when my passenger opened the door while I was parked in neutral (engine running).
Original post Read captured discussion
Alarm/Locking System Malfunction

Coverage and how to read this overview

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.

2 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

The alarm/locking system on my '99 C4 started malfunctioning last week - thus far my dealer is stumped. The horn frequently sounds (continuously - but it sounds "tired" - not very loud) when unlocking or sometimes locking the car with the key or with the remote. On one occassion, the horn started sounding when my passenger opened the door while I was parked in neutral (engine running). When the horn is sounding, the ignition won't work - I have to lock and unlock the door to stop the horn (it often follows with two quick horn blows indicating (per the owners manual) an alarm/locking system malfunction). Has anyone experienced anything like this on their cars? I have all factory equipment except a dealer installed K40 radar detector (but that has been operating flawlessly since '99). The car battery indicator is in the normal range. My dealer is contacting porsche for their thoughts. Thanks in advance for any suggestions.

POST 2 / ORIGINAL POSTEROriginal post

Mystery solved. Nothing but a loose connection in the alarm/auto lock system.

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