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Thread: Coding a new battery

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  1. Coding a new battery 
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    I'm a bit confused about the coding of a new battery and whether it's even required at all? Today I changed the battery in my car and took out a failing 95Ah Exide OEM battery and fitted a 100Ah Banner Powerbull Pro. The new battery has a serial number, but no BEM codes.

    I kept voltage applied to the battery terminals at all times and I've read on another forum an opinion that doing so means you don't need to code with vcds. So now I'm confused -

    - do I need to code the new battery? Car seems happy enough right now and starts up ok without errors in auto scan on vcds
    - what does coding actually accomplish?
    - I've seen others suggest leaving product number the same but just changing the previous serial by one digit. Is this the best approach?

    just wondering whether to take the risk (small as it might be) or making a coding change or whether I just leave it alone on the basis the car is working with the new battery. Thanks all
    2007 A6 Allroad 3.2 FSI Tiptronic (C6 4f pre-facelift) - left hand drive with X1D build sticker code
     
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  2. Re: Coding a new battery 
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    Just change the serial number by one digit. The car then knows it has a new battery and will monitor it as such.
    NOW GONE 2007 A6 2.7TDi Avant Le Mans Edition (180)

    Mods:- ECU Remap, Rear Air Suspension, Rear Led Lights, Rear View Camera, Rear Privacy Glass, Titanium wheels, Colour Coded Fog Light Surrounds, FBMFSW, AMI, DAB, Chrome S6 pedals, Front Grille De-chrome, window surround de-chrome.
     
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  3. Re: Coding a new battery 
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    Thanks, will do that. I actually nearly did it straight after putting the battery in, but vcds popped up some warning dialog box and I got a bit scared I might screw something up, so I cancelled out of it.
    2007 A6 Allroad 3.2 FSI Tiptronic (C6 4f pre-facelift) - left hand drive with X1D build sticker code
     
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  4. Re: Coding a new battery 
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    Ok, well I tried but it's not taking any input in the serial number box. It just makes a "bong" sound each time I click that dialog box and doesn't let me edit anything.
    2007 A6 Allroad 3.2 FSI Tiptronic (C6 4f pre-facelift) - left hand drive with X1D build sticker code
     
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  5. Re: Coding a new battery 
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    Try alter the aH as your new is different and the serial number
    NOW GONE 2007 A6 2.7TDi Avant Le Mans Edition (180)

    Mods:- ECU Remap, Rear Air Suspension, Rear Led Lights, Rear View Camera, Rear Privacy Glass, Titanium wheels, Colour Coded Fog Light Surrounds, FBMFSW, AMI, DAB, Chrome S6 pedals, Front Grille De-chrome, window surround de-chrome.
     
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