Porsche Club GB

PCM issue

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHPCM issue

Leading reported evidence

Disconnect battery does the pcm need re-syncing or something

Suggestion or failed attempt

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 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
As I disconnected the battery does the pcm need Re-syncing or something ?
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PCM issue

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Leading evidence: 'Disconnect battery does the pcm need re-syncing or something' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect battery does the pcm need re-syncing or something' (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 · 0 partial discussions

Compare 1 other evidence results

Disconnect battery some damage seems

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
consequently the drainage system could not cope and I ended up with water in my drivers / right side footwell water got into the Motorola phone controller under drivers seat and before I could disconnect battery some damage seems to have already been done my pcm comes up with no amp phone ect detected no sound display all seems to work ok just wondering what to have a look @ I’ve ordered a new second hand unit under seat .
Original post Read captured discussion
PCM issue

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.

Disconnect battery does the pcm need re-syncing or something

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
As I disconnected the battery does the pcm need Re-syncing or something ?
Original post Read captured discussion
PCM issue

Disconnect battery some damage seems

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
consequently the drainage system could not cope and I ended up with water in my drivers / right side footwell water got into the Motorola phone controller under drivers seat and before I could disconnect battery some damage seems to have already been done my pcm comes up with no amp phone ect detected no sound display all seems to work ok just wondering what to have a look @ I’ve ordered a new second hand unit under seat .
Original post Read captured discussion
PCM issue

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.

Porsche Club GB: 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: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi all need a little help have a 996 2004 c4s convertible last week we had a massive amount or rain in a very short space of time it was Insane and obviously I didn’t have my cover on as I had used it that day ?? consequently the drainage system could not cope and I ended up with water in my drivers / right side footwell water got into the Motorola phone controller under drivers seat and before I could disconnect battery some damage seems to have already been done my pcm comes up with no amp phone ect detected no sound display all seems to work ok just wondering what to have a look @ I’ve ordered a new second hand unit under seat . As I disconnected the battery does the pcm need Re-syncing or something ? thanks in advance for any help ??????

POST 2Original post

Welcome Dan! The PCM head unit, amplifier, phone module, and CD changer are all connected in a fibre optic (MOST) loop. If any one of them is faulty, the loop is broken, and you get the "No phone, amp, etc." message. When you fit the new phone module it should all spring back into life.

POST 3 / ORIGINAL POSTEROriginal post

Richard many thanks for reply ?? I was hoping that would be the case new part has been dispatched so for me fingers crossed ?? ????

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