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2004 996 C4S Light Switch

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Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH2004 996 C4S Light Switch

Leading reported evidence

Test circuits bcu

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
Branden tested the circuits BCU with the PWIS and found it to be OK
Original post Read captured discussion
2004 996 C4S Light Switch

Frequently discussed work

Replace 99661353500 fit

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
Headlight Switch Headlamp Switch Replace 99661353500 Fit for Porsche 911
Original post Read captured discussion
2004 996 C4S Light Switch

Read full discussion summary

Leading evidence: 'Test circuits bcu' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 99661353500 fit' (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.

Read captured replies

1 matching discussions · 4 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace 99661353500 fit

Suggestion or failed attempt

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
Headlight Switch Headlamp Switch Replace 99661353500 Fit for Porsche 911
Original post Read captured discussion
2004 996 C4S Light Switch

Use since there are empty fuse slots

Suggestion or failed attempt

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
Im not sure why a jumper fuse had to be used since there are empty fuse slots ???
Original post Read captured discussion
2004 996 C4S Light Switch

Frequently discussed actions (3)

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

Replace 99661353500 fit

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
Headlight Switch Headlamp Switch Replace 99661353500 Fit for Porsche 911
Original post Read captured discussion
2004 996 C4S Light Switch

Test circuits bcu

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
Branden tested the circuits BCU with the PWIS and found it to be OK
Original post Read captured discussion
2004 996 C4S Light Switch

Use since there are empty fuse slots

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
Im not sure why a jumper fuse had to be used since there are empty fuse slots ???
Original post Read captured discussion
2004 996 C4S Light Switch

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.

4 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: 20261027T201111Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Fellow Enthusiasts the only thing my light switch will turn on is the headlights no other position works? Is this common? Any idea on the fix? Thanks as always.

POST 2Original post

Yes 100s of threads on this issue. Search as the fix is not that hard or expensive.

POST 3Original post

Quotes source post: 20196184

Try here: https://rennlist.com/forums/996-foru...placement.html AMAZON Has H/L Switches. Headlight Switch Headlamp Switch Replace 99661353500 Fit for Porsche 911 WMPHE Headlight Switch Compatible ITALY SWITCH: Standard Motor Products HLS-1227 Headlight Switch URO Parts 99661353500 Headlight Switch There was one H/L switch that was different, photos attached.

POST 4Original post

Took the 987 over to SOS European in Huntington Beach to trouble shoot. Branden tested the circuits BCU with the PWIS and found it to be OK It turned out my original switch was bad; fortunately, I had picked up a backup on eBay for. $ 30 Part of the problem was caused by by a jumper in the fuse box; this connected my backup light circuit to the PCCM�s backup cam. Im not sure why a jumper fuse had to be used since there are empty fuse slots ??? Heres a pic of my fuse box; one of the red wires is for the backup cam, the other for my front Garmin dash cam

This is a source reference. Confirm exact model applicability in the original material.