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Planet-9

08 cayman trying to start after winter storage, lights flash, no start

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7 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH08 cayman trying to start after winter storage, lights flash, no start

Leading reported evidence

Use boost function

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

Had to hang it on a 10AMP charger for a few hours, then used the boost function to start it.

08 cayman trying to start after winter storage, lights flash, no start
Frequently discussed work

Check put charger

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

Taking the car cover off after the winter,stored inside, 60 F today,, had a trickle charger on and off ,,, oil level check was 59 minutes, went to start ,, headlights blinked on and off repatedly,, back to 59 minute oil check,, put charger on for a couple hours ,, repeat,, same thing.

08 cayman trying to start after winter storage, lights flash, no start
Read full discussion summary

Leading evidence: 'Use boost function' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check put charger' (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 · 7 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Check put charger

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

Taking the car cover off after the winter,stored inside, 60 F today,, had a trickle charger on and off ,,, oil level check was 59 minutes, went to start ,, headlights blinked on and off repatedly,, back to 59 minute oil check,, put charger on for a couple hours ,, repeat,, same thing.

08 cayman trying to start after winter storage, lights flash, no start

Replace under warranty if it's determined

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

(I said might) even get it replaced under warranty if it's determined that battery was defective to begin with.

08 cayman trying to start after winter storage, lights flash, no start

Run radio, etc

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

I agree with fmarshall - I've seen this time and again, not just with my car, but others' as well - enough juice to light up the dash, run the radio, etc.

08 cayman trying to start after winter storage, lights flash, no start

Test battery is

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

The only accurate way to test a battery is under load.

08 cayman trying to start after winter storage, lights flash, no start
Frequently discussed actions (5)

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

Check put charger

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

Taking the car cover off after the winter,stored inside, 60 F today,, had a trickle charger on and off ,,, oil level check was 59 minutes, went to start ,, headlights blinked on and off repatedly,, back to 59 minute oil check,, put charger on for a couple hours ,, repeat,, same thing.

08 cayman trying to start after winter storage, lights flash, no start

Replace under warranty if it's determined

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 said might) even get it replaced under warranty if it's determined that battery was defective to begin with.

08 cayman trying to start after winter storage, lights flash, no start

Run radio, etc

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 agree with fmarshall - I've seen this time and again, not just with my car, but others' as well - enough juice to light up the dash, run the radio, etc.

08 cayman trying to start after winter storage, lights flash, no start

Test battery is

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

The only accurate way to test a battery is under load.

08 cayman trying to start after winter storage, lights flash, no start

Use boost function

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

Had to hang it on a 10AMP charger for a few hours, then used the boost function to start it.

08 cayman trying to start after winter storage, lights flash, no start
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.

7 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.

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

Outcome without a verified action link

You may even have enough juice to light up everything and still not able to even open the front boot.

No unique explicit quoted action; no causal link assigned

Generation: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi, Taking the car cover off after the winter,stored inside, 60 F today,, had a trickle charger on and off ,,, oil level check was 59 minutes, went to start ,, headlights blinked on and off repatedly,, back to 59 minute oil check,, put charger on for a couple hours ,, repeat,, same thing. Funny thing is appears that the battery is fully charged,, lights are on,, dash is fine,radio works power locks solid thunking,,, wipers ok Any ideas,, is it just mad that it hadn't been driven. The car only has 750 miles on it,, so does that mean I won't get any love from the dealer on the battery since it is alot less than 6,000 miles?mif thats it. I'm going to check it in the morning and see

POST 2Original post

The battery doesn't act like it will handle a load. Maybe it isn't as charged as you think. If you don't get starter movement, then the battery isn't charged. The lights will not dim when the starter engages on a fully charged serviceable battery. The battery should be on a battery tender during the entire storage period for optimal results. A trickle charge won't bring any fast help. The battery has about 1000 cold cranking amps. A 100 amp charge would take a few hours to bring it back to life if it were totally dead. You need AAA and a jump IMO.

POST 4Original post

I agree with fmarshall - I've seen this time and again, not just with my car, but others' as well - enough juice to light up the dash, run the radio, etc. but not enough to turn over the motor. Since your car is so new, the factory might have installed a defective battery - we've had reports of very new cars having dead cells in the battery before - so you might (I said might) even get it replaced under warranty if it's determined that battery was defective to begin with. Call the 1-800-Porsche number and have it taken to a dealer. brad

POST 5Original post

The only accurate way to test a battery is under load. Connect a voltmeter across the terminals and turn the key. If the voltage drops significantly (3-4 volts or more) then the battery needs recharging. A fully charged battery should produce 12.6 volts.

POST 6Original post

I store my 2000 M-roadster every winter with a battery tender connected all winter. Starts every spring. Original battery.

POST 7Original post

You may even have enough juice to light up everything and still not able to even open the front boot. Had that happen with wife's car an a bad cell in the battery. Had to hang it on a 10AMP charger for a few hours, then used the boost function to start it. If you do not hear the starter turn your battery is dead.

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