Rennlist

996 C4 electronic gremlins (99 model)

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Original source

2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH996 C4 electronic gremlins (99 model)

Leading reported evidence

Replace lcd screen

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 · Original poster
Three weeks ago I replaced the LCD screen on the climate control panel.
Original post Read captured discussion
996 C4 electronic gremlins (99 model)

Frequently discussed work

Replace but better than taking it

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
Pain in back (literally) to change but better than taking it to the dealer.
Original post Read captured discussion
996 C4 electronic gremlins (99 model)

Read full discussion summary

Leading evidence: 'Replace lcd screen' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace but better than taking it' (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 · 0 partial discussions

Compare 1 other evidence results

Replace but better than taking it

Suggestion or failed attempt

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
Pain in back (literally) to change but better than taking it to the dealer.
Original post Read captured discussion
996 C4 electronic gremlins (99 model)

Frequently discussed actions (2)

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

Replace but better than taking it

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
Pain in back (literally) to change but better than taking it to the dealer.
Original post Read captured discussion
996 C4 electronic gremlins (99 model)

Replace lcd screen

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
Three weeks ago I replaced the LCD screen on the climate control panel.
Original post Read captured discussion
996 C4 electronic gremlins (99 model)

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.

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: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, I have a 99 996 C4 which recently developed serious electric problems. During the week, while driving the PMS Off and ABS Off buttons would show up on the dash (I noticed that once these light would be on, only the driver's side high beam would come on). Now, this is gone but something else came up: the brake lights are on permanently. A little history on what has happened to the car in the past month: Three weeks ago I replaced the LCD screen on the climate control panel. I drove the car for two weeks after that and everything was fine. The display works beautifully and no lights on the dash. About two weeks ago as we were pounded by Esaias we lost power and consequently the sump pump in our basement stopped working which meant that we were rapidly getting flooded (we have a late 40s cape Cod with the garage under the house and that were the 996 is kept). The battery on the generator was dead and the recoil pulley broke. The nearest thing to jump start the generator was the 996 so that's what I did (a couple of times). The crazy electrical gremlins started happening after that. I checked the connections behind the climate control unit and everything is fine. Anyone has the slightest idea what is happening? Any help is truly appreciated

POST 2 / ORIGINAL POSTEROriginal post

Update: it's simply the brake light switch. A $25 part. Pain in back (literally) to change but better than taking it to the dealer. Failure of the switch will create all sorts of issues with the electronics.

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