Planet-9

'09 Carrera Battery Drain

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH'09 Carrera Battery Drain

Reported or suspected cause

maddening

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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 report identifying a cause: 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.

Reported cause
It's a great car, but the problem is maddening.
Original post Read captured discussion
'09 Carrera Battery Drain

Read full discussion summary

Leading evidence: 'maddening' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'maddening' (1 discussions; 1 report identifying it and 0 suggest it). 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 · 1 captured posts examined · 1 partial discussions

Compare 1 other evidence results

bose amplifier needs replacing

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect a cause: 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.

Suspected cause
Suspect the Bose amplifier needs replacing, but they can't guarantee that will fix the problem.
Original post Read captured discussion
'09 Carrera Battery Drain

Reported and suspected causes (2)

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

maddening

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying a cause: 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.

Reported cause
It's a great car, but the problem is maddening.
Original post Read captured discussion
'09 Carrera Battery Drain

bose amplifier needs replacing

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect a cause: 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.

Suspected cause
Suspect the Bose amplifier needs replacing, but they can't guarantee that will fix the problem.
Original post Read captured discussion
'09 Carrera Battery Drain

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.

1 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 · 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: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

2009 Carrera Cabriolet I read a lot about battery drain problems with this year and model. There seems to be a lot of speculation, but no real answers. My service has always been performed by the local Porsche dealership, but they are very uncertain about a diagnosis. Suspect the Bose amplifier needs replacing, but they can't guarantee that will fix the problem. When I turn the car off, and remove the key, there is a static sound coming from one of the rear speakers. It stops when the alarm is engaged (if I stay in the car and activate the alarm with the key fob, remaining still to not activate the internal motion sensor, the static stops). However, even activating the alarm every time will still result in a dead battery after 2 weeks of non-use, with no trickle charger. The trickle charger helps, but I still only get 14-16 months out of every new battery. It's a great car, but the problem is maddening. Anybody have a similar issue with a good diagnosis? Thanks.

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