HELP!! 991 battery
Discussion
flat as a pancake after I left the car in storage for a few weeks, was all locked up so got in via emergency key and then the emergency procedure to open the boot lid (connecting a separate battery to the fuse box) but now the battery is on charge there is a clicking coming from the front and the hazards lazily flashing (assume alarm?).
Is there a way to disable the alarm until the car gets enough charge in it for the key fob to do it's stuff? Pull fuse for alarm siren?
Was planning on taking it out for a blast to charge the battery..!! bu@@er
Is there a way to disable the alarm until the car gets enough charge in it for the key fob to do it's stuff? Pull fuse for alarm siren?
Was planning on taking it out for a blast to charge the battery..!! bu@@er
Once you can get the charger onto it and juice in the electrics start working and your fob should work fine. Although once mine went completely flat, after six month of trying to keep it charged, it never held charge properly again and bought a new battery (£500-ish C2S 991.2).
Ps - recognise the name from SELOC. The 991 is far less fussy than the 250cup LiItium Ion battery.
Ps - recognise the name from SELOC. The 991 is far less fussy than the 250cup LiItium Ion battery.
TonyG2003 said:
Once you can get the charger onto it and juice in the electrics start working and your fob should work fine. Although once mine went completely flat, after six month of trying to keep it charged, it never held charge properly again and bought a new battery (£500-ish C2S 991.2).
Ps - recognise the name from SELOC. The 991 is far less fussy than the 250cup LiItium Ion battery.
£500 for a battery? really? wowsersPs - recognise the name from SELOC. The 991 is far less fussy than the 250cup LiItium Ion battery.
No luck with the blasted thing.
Won't take a charge, according to Porsche the battery is not getting enough current from the charger to power up enough for key fob to work so it is still 'asleep' and the clicking noise from the front and weak flashing from hazards when it is hooked up to charger is the car thinking it is getting stolen.
Wouldn't jump start off the missus's Volvo either. It nearly fired up and the dash all lit up but then got a few scary error messages and warnings so aborted. I've now disconnected the battery from the car to see if it will charge that way but failing that will pick up a new Porsche battery tomorrow at circa £500. Car is warrantied so no choice. I believe I can fit it but then will probably have to take it to Porsche to get some 'coding' done to the vehicle.
On the Lotus front, yeah I had those lightweight batteries in both a 260Cup and 211 but both vehicles had cut off switches that I religiously stuck to using, and had no problems with the batteries.
Won't take a charge, according to Porsche the battery is not getting enough current from the charger to power up enough for key fob to work so it is still 'asleep' and the clicking noise from the front and weak flashing from hazards when it is hooked up to charger is the car thinking it is getting stolen.
Wouldn't jump start off the missus's Volvo either. It nearly fired up and the dash all lit up but then got a few scary error messages and warnings so aborted. I've now disconnected the battery from the car to see if it will charge that way but failing that will pick up a new Porsche battery tomorrow at circa £500. Car is warrantied so no choice. I believe I can fit it but then will probably have to take it to Porsche to get some 'coding' done to the vehicle.
On the Lotus front, yeah I had those lightweight batteries in both a 260Cup and 211 but both vehicles had cut off switches that I religiously stuck to using, and had no problems with the batteries.
240Cup said:
No luck with the blasted thing.
Won't take a charge, according to Porsche the battery is not getting enough current from the charger to power up enough for key fob to work so it is still 'asleep' and the clicking noise from the front and weak flashing from hazards when it is hooked up to charger is the car thinking it is getting stolen.
Wouldn't jump start off the missus's Volvo either. It nearly fired up and the dash all lit up but then got a few scary error messages and warnings so aborted. I've now disconnected the battery from the car to see if it will charge that way but failing that will pick up a new Porsche battery tomorrow at circa £500. Car is warrantied so no choice. I believe I can fit it but then will probably have to take it to Porsche to get some 'coding' done to the vehicle.
On the Lotus front, yeah I had those lightweight batteries in both a 260Cup and 211 but both vehicles had cut off switches that I religiously stuck to using, and had no problems with the batteries.
The chemistry on 'most' batteries are such that if they suffer a deep or extended discharge, they won't (usually) recover. Are you connecting a conditioner, or just an old school charger? The car is behaving exactly how I'd expect it to, given the description you've provided thus far.Won't take a charge, according to Porsche the battery is not getting enough current from the charger to power up enough for key fob to work so it is still 'asleep' and the clicking noise from the front and weak flashing from hazards when it is hooked up to charger is the car thinking it is getting stolen.
Wouldn't jump start off the missus's Volvo either. It nearly fired up and the dash all lit up but then got a few scary error messages and warnings so aborted. I've now disconnected the battery from the car to see if it will charge that way but failing that will pick up a new Porsche battery tomorrow at circa £500. Car is warrantied so no choice. I believe I can fit it but then will probably have to take it to Porsche to get some 'coding' done to the vehicle.
On the Lotus front, yeah I had those lightweight batteries in both a 260Cup and 211 but both vehicles had cut off switches that I religiously stuck to using, and had no problems with the batteries.
I bought one of those battery booster packs for about £150 and it has been very useful so far, in that it gets the car started. I still ended up buying a new battery for one car, but it allowed me to drive it until I had this sorted, as I knew I could start it regardless of the battery not holding charge too well.
240Cup said:
Ctek has been on it now for about 6 hours - am up to 2 yellow lights (i think there are about 6) but it seems stuck there and not getting any higher, too soon to judge?
Yes - leave it overnight. The older it is/the longer it was discharged = the less chance of it recovering fully.The date stamp on the negative terminal is from week 43 of 2011 (it is a 2012 991C2S) so battery is 10 years old - reckon it has probably given up the ghost but ten years isn't bad going (car has 55K miles and 2 owners).
Will leave it on tonight and see what happens tomorrow, probably go down to Porsche and get the OEM battery, fit it and then see how many warning lights I've got on and what sort of ecu reflash or whatever needs doing but at least in theory I will be able to drive it to the dealership (it is currently well wedged into an underground garage and I didn't really want the recovery people coming out via Porsche Assist and extricating it!).
Will leave it on tonight and see what happens tomorrow, probably go down to Porsche and get the OEM battery, fit it and then see how many warning lights I've got on and what sort of ecu reflash or whatever needs doing but at least in theory I will be able to drive it to the dealership (it is currently well wedged into an underground garage and I didn't really want the recovery people coming out via Porsche Assist and extricating it!).
It may have changed on the 991, but at least on the 997 you don’t need any “coding” from Porsche when changing the battery - it will throw up a heap of warning messages when you start it up (PSM, PASM, etc.) but a few mins of slow speed driving and it sorts itself out - worth a try?
Agree with others though, the battery may be kaput. Total rip-off if Porsche are telling you that you have to pay £500 for their OEM battery when literally the same model is available for half the cost elsewhere…
Agree with others though, the battery may be kaput. Total rip-off if Porsche are telling you that you have to pay £500 for their OEM battery when literally the same model is available for half the cost elsewhere…
Hoorah! i installed a new OEM battery and all is well.
Two faults came up, one saying 'steering assistance restricted but continue driving' (solved by going lock to lock and the message disappeared and also the leccy windows had dropped but reset them easily).
So no trip to dealer. fingers crossed!!
Two faults came up, one saying 'steering assistance restricted but continue driving' (solved by going lock to lock and the message disappeared and also the leccy windows had dropped but reset them easily).
So no trip to dealer. fingers crossed!!
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