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ABS/PSM triggered by taillight issue, need some help

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHABS/PSM triggered by taillight issue, need some help

Leading reported evidence

Replace bulbs & harnesses left

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 swapped bulbs & harnesses left to right, the issue keeps on popping up for those same 3 lights on the passenger side.

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help
Frequently discussed work

Check filaments in the bulbs i had one

No successful repair reported for this finding.

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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

Check the filaments in the bulbs I had one that had the tail and brake break one and it fell across the other and all kinds of mahem ensued..

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help
Read full discussion summary

Leading evidence: 'Replace bulbs & harnesses left' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check filaments in the bulbs i had one' (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 · 6 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check filaments in the bulbs i had one

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

Check the filaments in the bulbs I had one that had the tail and brake break one and it fell across the other and all kinds of mahem ensued..

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help

Check fuses

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 will assume you have already checked all the fuses for the lights...right?

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help

Check fuses especially a3

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

Check fuses especially A3.

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help

Check wiring harness pins

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

One suggestion - check the wiring harness pins for both 12V and proper grounding.

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help
Frequently discussed actions (6)

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

Check filaments in the bulbs i had one

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

Check the filaments in the bulbs I had one that had the tail and brake break one and it fell across the other and all kinds of mahem ensued..

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help

Check fuses

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 will assume you have already checked all the fuses for the lights...right?

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help

Check fuses especially a3

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

Check fuses especially A3.

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help

Check wiring harness pins

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

One suggestion - check the wiring harness pins for both 12V and proper grounding.

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help

Replace bulbs & harnesses left

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 swapped bulbs & harnesses left to right, the issue keeps on popping up for those same 3 lights on the passenger side.

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help

Use small dab of epoxy

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 had to use a small dab of epoxy to keep 2 of mine from shorting..

Original post Read captured discussion
ABS/PSM triggered by taillight issue, need some help
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.

6 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.

Outcome without a verified action link

They threw new wiring harnesses at the issue - didn't help.

Original post Read captured discussion

No unique explicit quoted action; no causal link assigned

Generation: 20261027T051247Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

All, Would appreciate your help on following diagnostic : ABS/PSM comes on after about 2 miles into every new ride (after a new 'start-up') Seems to be related to the passenger sid e taillight, of which 3 of the sub-lights do not work (see picture, they are marked with blue painter's tape). All lights/bulbs on the driver's side work. I already excluded following potential issues : 1] Stop Light switch (near brake pedal); 2] Tail light wiring harness; 3] Bulbs I am really at a loss where to go next with my diagnosis, anybody got an idea or went through a similar experience ? 2004 Turbo cab, but I assume the wiring is similar to a regular 996.

POST 2Original post

Check the filaments in the bulbs I had one that had the tail and brake break one and it fell across the other and all kinds of mahem ensued.. Also the traces on the tail-light housings can break or get loose.. I had to use a small dab of epoxy to keep 2 of mine from shorting..

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 16785622

Thanks. I swapped bulbs & harnesses left to right, the issue keeps on popping up for those same 3 lights on the passenger side. As such, we can eliminate any issue with the wiring harness or the bulbs. This would lead me to believe that the issue is somewhere upstream inside the car, beyond the connector shown in the picture below. Does the driver side tail light feed the passenger side by any chance? Could any of the wires in between have shorted ? By the way - greetings from Bend. One of the local shops (German Master Tech) already had a look at it and misdiagnosed. They threw new wiring harnesses at the issue - didn't help. Anybody you can recommend in the valley ? Bend is just horrible for any decent car or bike stuff.

POST 4Original post

One suggestion - check the wiring harness pins for both 12V and proper grounding. I will assume you have already checked all the fuses for the lights...right?

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