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PSM & ABS lights... yes again

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

Discussion summary

YOUR RESEARCHPSM & ABS lights... yes again

Leading reported evidence

Install (or anywhere else actually)

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 do not have LED tails installed (or anywhere else actually), it does not happen when I hit the brake, it only happens when I turn on my running lights (first position on the switch).

PSM & ABS lights... yes again
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Leading evidence: 'Install (or anywhere else actually)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install (or anywhere else actually)' (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.

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

Compare 4 other evidence results

Replace brake switch as well as the maf just

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 · Original poster

I did replace the brake switch as well as the MAF just to eliminate those possibilities.

PSM & ABS lights... yes again

Run lights

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 · Original poster

I turn on running lights.

PSM & ABS lights... yes again

Run lights (first position

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 · Original poster

I do not have LED tails installed (or anywhere else actually), it does not happen when I hit the brake, it only happens when I turn on my running lights (first position on the switch).

PSM & ABS lights... yes again

Use brakes

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 · Original poster

So I was confused as my brake lights were working, so I assumed it cannot be them, especially since the fault was not triggered by using the brakes.

PSM & ABS lights... yes again
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.

Install (or anywhere else actually)

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 do not have LED tails installed (or anywhere else actually), it does not happen when I hit the brake, it only happens when I turn on my running lights (first position on the switch).

PSM & ABS lights... yes again

Replace brake switch as well as the maf just

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 · Original poster

I did replace the brake switch as well as the MAF just to eliminate those possibilities.

PSM & ABS lights... yes again

Run lights

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 · Original poster

I turn on running lights.

PSM & ABS lights... yes again

Run lights (first position

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 · Original poster

I do not have LED tails installed (or anywhere else actually), it does not happen when I hit the brake, it only happens when I turn on my running lights (first position on the switch).

PSM & ABS lights... yes again

Use brakes

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 · Original poster

So I was confused as my brake lights were working, so I assumed it cannot be them, especially since the fault was not triggered by using the brakes.

PSM & ABS lights... yes again

Use right bulbs, and according

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 · Original poster

I even looked in the manual to make sure I was using the right bulbs, and according to the manual I was.

PSM & ABS lights... yes again
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: 20261026T172408Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Heya, So I am hoping someone can offer some insight here... I have a 2000 996 C4 coupe tiptronic. In the last week my ABS & PSM lights will come on. I do not have LED tails installed (or anywhere else actually), it does not happen when I hit the brake, it only happens when I turn on my running lights (first position on the switch). My MAF is good, the car throws no codes whatsoever, and when I restart the car the lights turn off. If I drive with them on my cruise control does not work either. Through searching I have seen that it could be a bad brake switch, but that will trigger when you engage the brakes. LED tails or some other LED item, or a bad MAF. I have none of these things. I am wondering if maybe it is a fuse? the only thing is the lights and such do work. Just to eliminate these possibilities ...... I did replace the brake switch as well as the MAF just to eliminate those possibilities. Same symtoms.... PSM & ABS lights appear as soon as I turn on running lights. I can hit the brake lights all day long and no failures. Cruise control also will not work in this state. I checked every fuse (all of them yes) and all seem ok. Any help or ideas would be appreciated Thanks much

POST 2Original post

Low battery voltage will also do strange things. What is your voltage? Does this happen while engine is above 2k rpm? Is your charging voltage above 13v?

POST 3 / ORIGINAL POSTEROriginal post

Sorry for the delayed reply, just saw this. So I figured it out, and feel kinda silly afterwords. So I was confused as my brake lights were working, so I assumed it cannot be them, especially since the fault was not triggered by using the brakes. I even looked in the manual to make sure I was using the right bulbs, and according to the manual I was. Then while sitting there in utter frustration and looking at the tail light harness I noticed something odd... the socket for the brake light is dual filament...So After doing my due diligence, by replacing the MAF and brake switch just in case it turns out to be a $4 bulb (bulb 7528 in case anyone ever has this happen). What I found interesting is that the manual had no mention of this. But oh well, did not get a Porsche to be cheap lol, and I got to learn stuff.

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