Replacing and coding new battery
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AudiWorld Junior Member
Joined: Oct 2022
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Replacing and coding new battery
Hello, I have 2013 audi a4 fwd. 3 to 4 years ago I replaced it myself using new battery from autozone. I didn't code it or anything. It's been 3 to 4 years I don't see anything wrong. Still running strong.
Should I worry about it? what happen if you don't code it?
Maybe soon I will need new battery but I haven't test if I need one or not yet. Should I code it? if so, what tools do I need to get? I heard abd11? can someone link me what kind and maybe instruction how to code it?
Should I worry about it? what happen if you don't code it?
Maybe soon I will need new battery but I haven't test if I need one or not yet. Should I code it? if so, what tools do I need to get? I heard abd11? can someone link me what kind and maybe instruction how to code it?
AudiWorld Super User
Joined: Dec 2001
Posts: 13,996
Likes: 3,376
From: Georgia
There is long coding, basic setting, and adaptation. The battery configuration information is stored in an adaptation, not in long coding. But people refer to any of the operations as "coding".
You need a suitable scan tool to perform and adaptation. VCDS by Ross-Tech (requires one of their interface cables) can do it. So can OBDeleven by VoltasIT (requires one of their Bluetooth devices), but only with the PRO subscription. Autel units can do it, but you'd have to check which units can do it.
There's a lot of information already out there about performing the adaptation. Including a whole youtube video by Ross-Tech. As long as you installed a battery of the same type (wet flood vs AGM) and size (H7 vs H8 vs H9), then the complications are minimal. The real issue is people changing the battery type and not "coding" in the change. Now the car is recharging the battery incorrectly.
You need a suitable scan tool to perform and adaptation. VCDS by Ross-Tech (requires one of their interface cables) can do it. So can OBDeleven by VoltasIT (requires one of their Bluetooth devices), but only with the PRO subscription. Autel units can do it, but you'd have to check which units can do it.
There's a lot of information already out there about performing the adaptation. Including a whole youtube video by Ross-Tech. As long as you installed a battery of the same type (wet flood vs AGM) and size (H7 vs H8 vs H9), then the complications are minimal. The real issue is people changing the battery type and not "coding" in the change. Now the car is recharging the battery incorrectly.
AudiWorld Senior Member
Joined: Aug 2011
Posts: 852
Likes: 186
From: NW OH
@ZERODRAGON : As SMac points out, if you want to adapt your (new) battery correctly, you need a VAG-aware diagnostic tool. Depends on how much you want to spend to get this done. Maybe a local indy shop will do it for you for a nominal charge. I have an older ECS-branded Foxwell NT510 that will do battery adaptation; it's not as comprehensive as, say VCDS, but it is useful in a pinch: https://www.ebay.com/itm/115489307887 --g
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