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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHIssue with Tail/Brake Light on My 2002 Porsche 996
Reported or suspected cause
only happening
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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Discussions that report identifying a cause
1
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Reported cause · Original poster
This problem is only happening on one side — the other side works as expected.
Issue with Tail/Brake Light on My 2002 Porsche 996
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Leading evidence: 'only happening' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'only happening' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check ground continuity' (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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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Issue with Tail/Brake Light on My 2002 Porsche 996
Clean connectors
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
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Performed · outcome unconfirmed · Original poster
ive replaced the bulb but same issue and i have cleaned the connectors
Issue with Tail/Brake Light on My 2002 Porsche 996
Replace bulb
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
ive replaced the bulb but same issue and i have cleaned the connectors
Issue with Tail/Brake Light on My 2002 Porsche 996
Check ground continuity
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.
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Suggestion
You can check if you are getting 12V when the brake pedal is pushed, and you can also check ground continuity from the light to the chassis..
Issue with Tail/Brake Light on My 2002 Porsche 996
Suggestion
All the bulbs share the same ground in the car body wiring so if tge turn signal and reverse light work ok I would be carefully checking the harness on the tail light.
Issue with Tail/Brake Light on My 2002 Porsche 996
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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.
13 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.
1 acknowledgements have no verified action link; they do not establish a repair result.
Hi all from Dublin Ireland
i have my 2002 996 C4 over 14 years now ...
I'm having a strange issue with the rear lights on my 2002 Porsche 996. When I press the brake pedal, the
tail light on the driver’s side
actually
turns off
, and the
brake (stop) light doesn’t come on at all
.
This problem is only happening on one side — the other side works as expected.
It seems like the light is losing power or grounding incorrectly when the brake is applied.
ive replaced the bulb but same issue and i have cleaned the connectors
appreciate any input from anyone who’s seen this before.
Thanks in advance!
How deteriorated was the wiring? It might be your brake light switch, located under the dash where the brake pedal is. This is where a multimeter would come in handy. You can check if you are getting 12V when the brake pedal is pushed, and you can also check ground continuity from the light to the chassis..
Like you mentioned it's a bad ground somewhere. All the bulbs share the same ground in the car body wiring so if tge turn signal and reverse light work ok I would be carefully checking the harness on the tail light.
Also if there are LED retrofit bulbs all bets are off. Those can cause some very odd things.
