Planet-9

PCM3 random clock issues

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3 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHPCM3 random clock issues

Leading reported evidence

Repair some damage they caused

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
They had the car for several days, as they kept it while they repaired some damage they caused to my bumper while it was being serviced (it had to be removed to repaired and repainted).
Original post Read captured discussion
PCM3 random clock issues

Frequently discussed work

Check battery

No successful repair reported for this finding.

0
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
How did you check the battery?
Original post Read captured discussion
PCM3 random clock issues

Read full discussion summary

Leading evidence: 'Repair some damage they caused' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check battery' (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 · 3 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Reset clock

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
When I reset the clock, to the correct time and continue driving it stays at the correct time.
Original post Read captured discussion
PCM3 random clock issues

Check battery

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
How did you check the battery?
Original post Read captured discussion
PCM3 random clock issues

Check battery and all is good

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
I thought perhaps my service centre drained the battery, and this is causing the issues, but I have checked my battery and all is good.
Original post Read captured discussion
PCM3 random clock issues

Replace randomly

Suggestion or failed attempt

No successful repair reported for this finding.

0
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
A few months ago my clock on my dash display started changing randomly when driving - I have a
Original post Read captured discussion
PCM3 random clock issues

Frequently discussed actions (9)

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

Check battery

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
How did you check the battery?
Original post Read captured discussion
PCM3 random clock issues

Check battery and all is good

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 thought perhaps my service centre drained the battery, and this is causing the issues, but I have checked my battery and all is good.
Original post Read captured discussion
PCM3 random clock issues

Repair some damage they caused

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
They had the car for several days, as they kept it while they repaired some damage they caused to my bumper while it was being serviced (it had to be removed to repaired and repainted).
Original post Read captured discussion
PCM3 random clock issues

Replace randomly

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
A few months ago my clock on my dash display started changing randomly when driving - I have a
Original post Read captured discussion
PCM3 random clock issues

Reset clock

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
When I reset the clock, to the correct time and continue driving it stays at the correct time.
Original post Read captured discussion
PCM3 random clock issues

Reset itself

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
Installing a new battery solved the clock changing at random times but the date reset itself to 2007.
Original post Read captured discussion
PCM3 random clock issues

Run they said it was okay

No successful repair reported for this finding.

0
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
I had the shop I bought the battery from test it while the engine was running - they said it was okay-
Original post Read captured discussion
PCM3 random clock issues

Set date and would not update

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
Even though the car had been on my MXS charger - the battery was progressively getting weak, I also noticed the date was stuck at set date and would not update for each new day.
Original post Read captured discussion
PCM3 random clock issues

Test today through my battery tester - simple voltage

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 also did a test today through my battery tester - simple voltage which again said it was okay.
Original post Read captured discussion
PCM3 random clock issues

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.

3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Planet-9: 1 discussions

0 evidence records excluded for query context · 1 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T083035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi all, Seeking a bit of help on an issue that has been bothering me. A few months ago my clock on my dash display started changing randomly when driving - I have a 987.2 . Even though the car had been on my MXS charger - the battery was progressively getting weak, I also noticed the date was stuck at set date and would not update for each new day. Installing a new battery solved the clock changing at random times but the date reset itself to 2007. Fast forward a few months and after a recent service at my local Indy- they had the car for an extended period of time. About 30 seconds to a minute after I start the car, the clock randomly changes. When I reset the clock, to the correct time and continue driving it stays at the correct time. I’ve also noticed that when I use the iPod interface with my iPhone , the connection has become unstable and ‘disconnects’ and goes to the tuner. I thought perhaps my service centre drained the battery, and this is causing the issues, but I have checked my battery and all is good. Any ideas - I wonder if the PCM is in the way out?

POST 2Original post

How did you check the battery? Simple voltage testing is inadequate. It needs to be load tested. And even that can be misleading. Is the "service centre" very experienced with Porsche 987's odd ignition switch which is in "Acc mode" whenever the key is inserted? How long was this "extended period of time"? It is possible that the new battery was damaged if the battery was completely discharged either through incompetence (key left inserted) or neglect (not left on a trickle charger over an externded lay-up). While there could be an internal problem with PCM, the battery is far more likely to be the issue. BTW, an intermittent problem with the radio/PCM could be caused by a loose ground. Do programmed radio stations also get reset? What work was performened at the indy that led to the long period of time?

POST 3Original post

Great questions. I had the shop I bought the battery from test it while the engine was running - they said it was okay- alternator charging correctly. I also did a test today through my battery tester - simple voltage which again said it was okay. I will do a load and crank test. Yes, they are an experienced Indy - though not infallible. They had the car for several days, as they kept it while they repaired some damage they caused to my bumper while it was being serviced (it had to be removed to repaired and repainted). Something else springs to mind- not sure if related- they might have had a battery tender connected to my battery, as unfortunately my bonnet dropped on it causing some damage to the underside of the bonnet. Not sure if it damaged the battery in anyway. It definitely wasn’t a good week for them… side note, they fixed all the damage without question. Except for the date issue, the PCM had been fine, until now. The program stations are not affected. It’s strange that it only jumps once the car has idling for a short time. The iPod connection drops in and out then eventually stays connected. I’ll recheck cables.

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