5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHKey Fob Battery
Leading reported evidence
Check first, as technically they just charged me the battery
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
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Suggestion
Just check first, as technically they just charged me the battery.
Leading evidence: 'Check first, as technically they just charged me the battery' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check first, as technically they just charged me the 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.
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
You may have to reassociate fob with alarm ECU (check your manual for this and also battery guidance) - involves pressing the button whilst key blade is in door lock or ignition (sorry, forget which)
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
As the remote uses a rolling code (new code every lock cycle) if the remote sender has been activated more than 256 times and less than 1024 times with the receiver out of range or while the vehicle battery is disconnected the unit must be resynchronized as follows:
Use normal button (cr) battery like many calculators, watches 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
The remote uses a normal button (CR) battery like many calculators, watches etc.
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
You may have to reassociate fob with alarm ECU (check your manual for this and also battery guidance) - involves pressing the button whilst key blade is in door lock or ignition (sorry, forget which)
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
As the remote uses a rolling code (new code every lock cycle) if the remote sender has been activated more than 256 times and less than 1024 times with the receiver out of range or while the vehicle battery is disconnected the unit must be resynchronized as follows:
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.
911uk: 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: 20261026T150451Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
The remote uses a normal button (CR) battery like many calculators, watches etc.
CR-2032 (20mm diameter by 3.2 mm thickness)
Just carefully prise open fob and swap over. I think it is easier to align rubber button downwards and then click "lid" over the PCB. Otherwise I found that doing it the other way resulted in the "lid" (the other lid this time!) not quite aligning with PCB, leaving a gap.
You may have to reassociate fob with alarm ECU (check your manual for this and also battery guidance) - involves pressing the button whilst key blade is in door lock or ignition (sorry, forget which)
I think they are £1-£2 from Wilkinsons, Boots WHSmith etc
To be fair, the first time my OPC changed it. Whilst handing me my invoice, they pointed out that their battery change and reprogram would, at a grand £3.50, be the cheapest OPC bill I would ever receive!
Just check first, as technically they just charged me the battery. I wouldn't have been surprised if they had slipped on 1/4 unit labour (not that I don't love my OPC, I just wouldn't be surprised anywhere in the motor industry!)
No probs.
Porsche advise any remote range of 5 ft or less suggests new battery is required.
Reset by manually unlocking the car door and wilst the key is still in the door, press the button, lock/unlock button. This re-synchs the electronics if it is time that has caused the car to forget the remote.
As the remote uses a rolling code (new code every lock cycle) if the remote sender has been activated more than 256 times and less than 1024 times with the receiver out of range or while the vehicle battery is disconnected the unit must be resynchronized as follows:
- Switch on the ignition (ignition key must have the correct transponder).
- Switch off the ignition.
- Remove the key and press the remote sender button within 6 seconds after the ignition key has been removed
The activation counter will then be reset to zero.
Just to add to GT4's suggestions:
Also note that the alarm system goes into energy-saving mode after 5 days of not being used, and the remote function is switched off. To exit sleep mode, just switch the ignition on with the key.
If none of the above works, you can reset the remote processor by inserting the key fob battery reverse polarity for 2-3 seconds. And it that doesn't work, you probably need a new remote.
This is a source reference. Confirm exact model applicability in the original material.
