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YOUR RESEARCHTail Lights - having issues - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Check fuse or two
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
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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.
Tail Lights - having issues - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Check fuse or two' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check fuse' (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 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
Replaced the good looking fuse with new and it fired right up.
Tail Lights - having issues - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Test power at the fuel pump
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
Car wouldn’t fire, we determined that it wasn’t getting enough fuel, then tested power at the fuel pump.
Tail Lights - having issues - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Check fuse
Suggestion or failed attempt
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 contain suggestions
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.
Tail Lights - having issues - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Check without having
Suggestion or failed attempt
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Unsuccessful attempts
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
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Suggestion
You can also check without having to remove the fuses.
Tail Lights - having issues - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.
11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 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: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hey 986 lovers, greetings from Guatemala.
I am having an issue with one of my tail lights ( the drivers side ) ( the other one works fine ), only the hazard / stoplight / turn signal work. I cant have the fog light and tail light work. I recently bought a new “bulb holder plate “ thinking it could be some kind of contact issue, but the problem persists. Could it be a fuse issue? Cable issue? Any advice?
Bulbs Working according to picture :
A , B , E
Not working
C , D , F
I see no "F" in the picture.
I'm guessing here.
Is your harness connection secure... tight... snug?
Is/are your front side-marker lights illuminated? Replace bulb(s) where applicable.
Have you checked the fuse for the lights? Replace fuse(s) where applicable.
Is bulb "D" good? Replace bulb if applicable.
Report back.
Replace
fuses A4 and A7 (for a layperson, visual inspection of a fuse tells you nothing about its condition).
If the issue persists, remove the headlight switch and clean
the inner contacts
(not the connector pins on the back) by spraying electrical contact cleaner into the switch and working the switch knob back and forth.
Should I understand that even if the/a fuse looks good... no burnt connecter... that it could be bad? If an electrical problem persists (similar to the OP), and the/a fuse looks good... replace it anyhow?
Any other signs to look for if the/a fuse "looks" good?
Thanks!
Absolutely. A fuse can be bad, but look completely normal. You can test it with an ohmmeter (anything over 1ohm is bad, good should measure under 0.5ohms), but they’re cheap and it’s easier to just swap it out. If swapping doesn’t solve your issue, the fuse was likely fine.
You can also check without having to remove the fuses. Use a volt meter or a light probe with one end grounded. You can probe the fuses at the butt end. The butt (plastic) end of the fuses have tiny openings where you can probe each of the blades.
If you have power on both sides, the fuse is good!
Yes and no. A test light is insufficient as you’d need to see the voltage drop from one side to the other to give an idea of resistance. You’d be surprised at how much a small voltage drop (slight increase in resistance) can affect some electronic components.
I just went through this yesterday with my sons friends car. Car wouldn’t fire, we determined that it wasn’t getting enough fuel, then tested power at the fuel pump. It was at 10V. Replaced the good looking fuse with new and it fired right up.
.
Interesting. I thought fuses were either good or blown. I've never had such experience as you did. Unless there was a problem with the contacts. Did you try re-inserting the same fuse?
Either way, good to know!
Thank you for that info. I've no horn and the LEDS in the cubby aren't illuminating. Checked a fuse or two... but will employ your troubleshooting method, and without removing the fuse(s).
Thanks to the both of you.
If your headlight switch is feeling a bit low on resistance or not clicking into each detent, may be time to replace it.
This is what happens in higher temperature climates, and even being garaged too.
This is a source reference. Confirm exact model applicability in the original material.
