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YOUR RESEARCHBattery Replacement - Help
Leading reported evidence
Install (and
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
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1
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
Was an exact replacement for what was previously fitted (and that lasted from April 2012) so I went with the same
Leading evidence: 'Install (and' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect /' (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.
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Suggestion
- if I leave the ignition in the 'on' position then the alarm won't go off when I disconnect/reconnect the battery?
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.
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Suggestion
Do I have to disconnect the battery to fit a new light switch to my 4S?
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Suggestion · Original poster
No-one told me about the alarm going off when you disconnect the battery - 2 min search on here gave me the answer to put the key in the ignition and turn on without starting the car.
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Suggestion · Original poster
No-one told me about the alarm going off when you disconnect the battery - 2 min search on here gave me the answer to put the key in the ignition and turn on without starting the car.
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.
13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
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Generation: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi All,
Although I've been using a trickle charger - I went to take out my 996.2 today to find a completely dead battery - On reconnecting the trickle charger and pushing the connection hard into the cig lighter it started to charge and I got at least a glimmer of power to the console.
I've left on charge and started a web search for batteries.
Europarts have a 50% sale on - but I'm confused as to the exact battery to buy!!
Can someone point me at a recommended make and model please
Ta
Greg
This is the one I bought for my 1999 996 C2
https://www.eurocarparts.com/p/lion-100-car-battery-70ah-3-year-guarantee-444771001
Coming in at £50 with discount code PAYDAY50
I've had no problems with it for over 2 ½ years.
Most people seem to rate the Bosch S5. My car (996.2) had one put in in 2016 and it died a few months ago.
I managed to resuscitate it but eventually gave up and just got a Halfords battery in a hurry. It's been fine. I can now leave the car a week without worrying about not even being able to pop the frunk (don't have a garage, trickle charging isn't possible).
I have been very happy with the below, car was left a couple of weeks and fired up no problem. Definitely an improvement on the old battery.
https://www.tayna.co.uk/car-batteries/bosch/s5010/
I also used Tanya to order. It's a good next day delivery service.
I chose the Varta Silver. As heard it was made in same factory and same standard as the Bosch, but was quite a bit cheaper. It's been fine for approx 5 years, although like everyone else, it needs constant trickle charge as car has never coped with 2 weeks unattended (even from nearly new... damn tracker I suspect!)
Thanks all for your help
https://www.tayna.co.uk/car-batteri...r_ELUbgFlpgQz70cZd1Gt5usoIplZxMYaAmVkEALw_wcB
Was an exact replacement for what was previously fitted (and that lasted from April 2012) so I went with the same
P.S. No-one told me about the alarm going off when you disconnect the battery - 2 min search on here gave me the answer to put the key in the ignition and turn on without starting the car.
Supplementary question:
Do I have to disconnect the battery to fit a new light switch to my 4S?
Assuming I do...
- if I leave the ignition in the 'on' position then the alarm won't go off when I disconnect/reconnect the battery?
- do I have to start the car and leave it idle for a bit to let the electronic throttle recalibrate... anything else I need to do to force it to recalibrate?
- do I have to reset the windows?
In short then no.
with a battery disconnect on this model ...
Ign turned on ( lights illuminated ) .. disconnect battery ..
Disconnect Neg lead then positive if replacing .. never disconnect the positive first .
Only Neg lead for something like this .
pos lead on first then neg lead .. basically never touch the positive lead with a spanner when the neg lead is still connected .
Close each window ..doors shut then press and hold the up window button for 5 seconds .. that will relearn the one touch close .
radio code if applicable .
ignition on and don't touch the throttle pedal for 30 seconds .. ignition off then drive as normal .. car will learn without this though so no big deal .
Steering angle sensor will reset after a drive over 6 mph but that's more for 997 than these .
