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Alarm & battery

David JAMES

PCGB Member
Member
Just thought I'd share my pre-Eynsham experiences. Went to wash the car Saturday and the alarm started playing up, annoyed the neighbours no end! Come Sunday and about to set off for the day's jaunt to Eynsham, alarm goes off as I try to get in the car, no joy at starting the car but eventually get it to go quiet. Call out the Porsche Assistance (ie the RAC) they pronounce duff battery and tell me despite that the alarm it can still make plenty of noise with its own reserve supply. Anyway get going, decide to risk the trip and enjoy the day, even more when a 30 year old 911 had to jump start me to get home again!

Next day off to get a battery, Halfords don't list them for 2.7 '03; neither do Kwik-fit - that means it must be special and expensive! The OPC looks as though it will charge £235 for the privilege, if only I could get it there! Anyway source the battery from JZ Machtech for £100 or so, along with some sound DIY advice, not quite as the manual - will it be just like changing over the battery on the trusty Volvo - like hell!

One try and off goes the alarm again - at which point I give up and call out Porsche Assistance who willing come out to help. Yet even they had problems, it seemed impossble for the chap to do a simple changeover without suppressing the alarm and when the new battery got in, boy was it LOUD - the 2 minutes to do that bit seemed like half an hour.

Anyway if you are contemplating a DIY changeover be warned it ain't that simple or quiet!

One of the RAC guys told me to go of to Maplins to get a solar powered dash mounted charger for about £20, apparently it plugs into the cigarete lighter socket and trickle charges in the sunshine. Anyone had experience of these?

DJ Midnight Blue 2003 2.7
 
David,

Sorry to hear you had problems, hope you enjoyed the event anyway.

When disconnecting the battery you can stop the alarm going off by putting the key in the ignition, and turning it to the 1st (accessory) position. If the alarm still went off and you tried that, then I don't know...[&:]


 
Just changed the battery on the 996. £65 from the local motor factor. 75maH instead of 80maH but the battery is marginally smaller, significantly lighter and the car is suitably equipped for it. Deafened myself as the manual doesn't explain in the slightest how to silence the second battery for the alarm but job done and all well in spite of that. Incidentally, I eventually silenced the alarm by running the engine for five seconds and it eventually shut up. Obviously I couldn't do that with the battery out.

Also, I've just acquired a 2maH solar battery trickle charger which seems to be working wonders. Edited to add that Maplins no longer do solar chargers. I got one of these http://www.outdoorgb.com/sshop/prod_info.asp?path=sunsei_se135__solar_car_and_boat_battery_maintainer for about £25, or try Google.
 
Thanks for comments. The RAC chap who fitted the battery wasn't impressed by the thought of leaving the ignition on throughout the installation procees, fearing 'spikes' as the new battery went in, with consequent potential damage to the electrics - which is probably why they don't mention that in the car's handbook

Checked out the solar powered charger at Maplins yesterday, listed as 'new' in the catalogue at £19.99
 

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