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Porsche Club GB

Flat Battery, Window Open, Car Unlocked!

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5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHFlat Battery, Window Open, Car Unlocked!

Leading reported evidence

Disconnect battery

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

To disconnect the battery under normal circumstances, switch on the ignition, but don't start the engine.

Flat Battery, Window Open, Car Unlocked!
Read full discussion summary

Leading evidence: 'Disconnect battery' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect 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 · 5 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Disconnect battery, negative terminal first

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

Then disconnect the battery, negative terminal first.

Flat Battery, Window Open, Car Unlocked!

Disconnect siren

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

So if you disconnected the siren before locking, that would get round that problem.

Flat Battery, Window Open, Car Unlocked!

Replace pc

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 · Original poster

As for the battery drain, the sat nav is an after market VDO Dayton system, and i recently change the PC for a newer one, and I think it has a fault as it does not switch off when the ignition is off (so it is always drawing power).

Flat Battery, Window Open, Car Unlocked!
Frequently discussed actions (4)

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

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

To disconnect the battery under normal circumstances, switch on the ignition, but don't start the engine.

Flat Battery, Window Open, Car Unlocked!

Disconnect battery, negative terminal first

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

Then disconnect the battery, negative terminal first.

Flat Battery, Window Open, Car Unlocked!

Disconnect siren

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

So if you disconnected the siren before locking, that would get round that problem.

Flat Battery, Window Open, Car Unlocked!

Replace pc

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 for the battery drain, the sat nav is an after market VDO Dayton system, and i recently change the PC for a newer one, and I think it has a fault as it does not switch off when the ignition is off (so it is always drawing power).

Flat Battery, Window Open, Car Unlocked!
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.

5 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: 20261027T053112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Good morning all, I suffered a flat battery a few weeks ago (after market sat nav powered on when it shouldn't be). After manging to stop the alarm, I decided to disconnet the battery (as I had no charger or jump leads) and deal with it the follwoing day. A jump start later and all is well, except this sat nav power drain issue. As a result of this a few questions arose: How do you lock the car if there is no power to the central locking (the passenger was unlocked) How do get the window to rise up with no power (car is a C2 Cabriolet) How do you put the car into storage? i.e. going away for while, wnat to disconnet the battery to it does not goe flat, and at the same time, make the car secure? I am sure I just missing something, as I cannot beleive that Porsche make a car that cannot be secured without a battery. Plus what is the best way to disconnet the battery (do you need to key just in the ignition or turned round to 1 or 2)

POST 2Original post

You can't lock the passenger door without power. I have pondered this before, and I can't come up with a simple solution. You could lock the car and leave the front compartment open. This would lock both doors. If you disconnect the battery at this point, the alarm siren will go off, powered by its internal battery. So if you disconnected the siren before locking, that would get round that problem. Then you would have to close the bonnet - never a good idea with the battery disconnected, as you won't be able to open it unless you pull the emergency cable release, and that's not easy. You could extend the emergency release cable, and put it somewhere more accessible, but hidden - behind the side indicator, perhaps. A lot of faffing around though. Can you leave a battery conditioner connected while you are away? That would be the easiest thing to do. Or pull the radio fuse to stop the satnav draining the battery, if that's your problem. I somehow think that it is more likely to be a tracker, or something else you don't know about. To disconnect the battery under normal circumstances, switch on the ignition, but don't start the engine. Switch off all the loads you can, such as aircon, interior lights, radio, etc. Then disconnect the battery, negative terminal first. If your car has a radio code, make sure you have it.

POST 3 / ORIGINAL POSTEROriginal post

Thanks for your advise/input Richard. I am considering getting a battery conditioner, but it just seems odd that Porsche have not thought about this scenario. As for the battery drain, the sat nav is an after market VDO Dayton system, and i recently change the PC for a newer one, and I think it has a fault as it does not switch off when the ignition is off (so it is always drawing power). Having said that, the onwers folder does have a tracker card in it, but I don;t know if the car has/still has one fitted. Is there any where I can look to see? You make a good point about the emergency release for the boot/bonnet. Where should they be exiting the car, as mine are neatly rolled up well within the car (no use if the main cable from the lever breaks? Regards

POST 4Original post

The front release emergency cable normally terminates under the headlight tray. If the car has mechanical releases it is on the passenger side, or if they are electric releases, on the driver's side. You have to peel back the wheel arch liner to reach them. If yours is in the car, someone has extended the cable. I would leave them where they are, as it is far more user-friendly, provided you know where they are! The emergency cables are completely separate to the lever cables. They hide trackers in all sorts of odd places. I haven't found mine yet. I think it is under the carpet in the rear footwell, but I'm not sure. One day, I'll go hunting for it. It sounds like your satnav is wired incorrectly, as it should have both permanent and ignition-switched feeds.

POST 5Original post

i thought the whole point of a tracker was for it to be hidden. it does make you wonder wether lots of second hand cars have trackers that new owners dont know about.

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