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Planet-9

2006 Cayman S - chasing down trunk light problem finds strange voltage

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Original source
2 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH2006 Cayman S - chasing down trunk light problem finds strange voltage

Leading reported evidence

Check switch

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

Disassembled the rear trim and checked the switch on the striker assembly.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage
Read full discussion summary

Leading evidence: 'Check switch' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check switch' (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 · 2 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Reconnect switch harness

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

Reconnected the switch harness.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Replace computer

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

dealer replaced the computer under the driver's seat of my 2009

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Replace electrical shorting

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

Changed the electrical shorting on the harness to the car when the car was 'locked'.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Disconnect harness and found the switch closed

Suggestion or failed attempt

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 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

I hooked up a meter to it after disconnecting the harness and found the switch closed when the trunk was open and an open circuit when the trunk was closed.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage
Frequently discussed actions (8)

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

Check switch

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

Disassembled the rear trim and checked the switch on the striker assembly.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Disconnect harness and found the switch closed

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

I hooked up a meter to it after disconnecting the harness and found the switch closed when the trunk was open and an open circuit when the trunk was closed.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Disconnect harness and manually shorting the connection

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

Repeated this test by disconnecting harness and manually shorting the connection on the harness going to the car and got the same results as before.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Reconnect switch harness

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

Reconnected the switch harness.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Replace computer

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

dealer replaced the computer under the driver's seat of my 2009

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Replace electrical shorting

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

Changed the electrical shorting on the harness to the car when the car was 'locked'.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Reset from the key

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

Was easily reset from the key.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage

Test by

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

Repeated this test by disconnecting harness and manually shorting the connection on the harness going to the car and got the same results as before.

Original post Read captured discussion
2006 Cayman S - chasing down trunk light problem finds strange voltage
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.

  • Planet-9: 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: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

My rear trunk light wasn't coming on when opened, so I went through these steps to troubleshoot, and I'm stuck now. Car has 'alarm system' according to the sticker. 'Frunk' lights behave as expected. Pulled the bulb and hooked it up to 12V. Conclusion: Bulb glows and is good. Disassembled the rear trim and checked the switch on the striker assembly. Switch works. I hooked up a meter to it after disconnecting the harness and found the switch closed when the trunk was open and an open circuit when the trunk was closed. Conclusion: Switch is good. Reconnected the switch harness. Locked the car with the trunk opened and closed. The lock button light on the dashboard behaved differently in each case. When the trunk was closed, it pulsed around 20 times and then went to a very occasional short flash. When the trunk was opened and I locked the car, it would flash 15 groups of 2 flashes. However, the horn did NOT honk when the trunk was open. I read that it should elsewhere on the forum. Conclusion: Car can tell if the trunk is open because the electrical connection from the switch is good, but does not sound the horn. Repeated this test by disconnecting harness and manually shorting the connection on the harness going to the car and got the same results as before. Conclusion: Everything works as it did before, just confirming and sure the switch is fine now. Changed the electrical shorting on the harness to the car when the car was 'locked'. This caused the lights to pulse continuously, like the alarm was going off. No horn though. Was easily reset from the key. Locked the car with the 'frunk' open. Lock LED also did 15 blinks of two flashes, like when the rear trunk was open. No horn. Conclusion: Behavior of 'no horn on lock' with either trunk open is consistent. Still didn't have a trunk light though, so I put a meter on the trunk light harness with the bulb assembly unplugged. Trunk light is showing 5.89V whether the trunk is open or not and this is not enough to make the bulb go on. Conclusion: ????? So, two questions: 1. I just had a PPI on this car and the dealer didn't mention the alarm horn not working. Frankly, I didn't know that it should, I assumed it just blinked. Could it be dealer disabled in software? Do these fail? I validated that the alarm horn is plugged in and Fuse 3 in Row B is good - I assume if it was dealer disabled for lock chirp, it would still work for alarm. Tomorrow I can pull the horn out and test. 2. What in the heck would cause 5.89V to be delivered to the rear trunk bulb at all times? I'm used to seeing 0V or 12V at a point like this, this feels very wrong. Searches for 6V porsche just loads me up with 356 hits, I can't seem to find a similar situation to this anywhere. Any advice is appreciated! -Dan

POST 2Original post

Dan, What did you find was the problem? The Porsche dealer replaced the computer under the driver's seat of my 2009 Boxster S after my garage flooded during a storm. Although the water only came within an inch of the door sill water apparently seeped up through openings in the floor. My rear trunk light is not working. I measured 5.46 Volts at the connector.

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