Quote:
Originally Posted by snapdragon
It never had an AGM from the factory, but if you want to fit one, they work well. They are usually 92-95Ah though and the AGM coding for 95Ah is 3D0915105CE or 000915105CE - this would need programming in to the BEM (battery energy manager).
I had had a LION AGM from Eurocarparts and it has been fine for 6 years and survived a lot of total drains caused by gremlins.
One of the main root causes with the A8 electrical problems is undercharging caused by an overheating connection behind the insulation in the driver's footwell.
There is a thread here about it with photos.
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Thank you for the information. I’ll search the thread out and I will also put a trickle charge on the battery. If I have the correct specification then I will give it every chance to recover as it has not run flat, apart from when it was in a garage a few weeks ago. I do understand that alternators do not always fully replenish a battery.
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Audi A8 2005 D3 3.0 Tdi quattro in Aurora Blue with cream sports seats, DAB Bose sound, 19” five spoke alloys, fingerprint technology and SatNav, wooden sports wheel and gearchange knob