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New battery coding
Posted: Mon Feb 23, 2015 5:25 pm
by classba
The battery has finally died so just bought a new one from Audi.
Does it need coding and if yes, what are the procedures with Vag Vom?.
Thanks
Re: New battery coding
Posted: Mon Feb 23, 2015 5:38 pm
by R33
I hope they don't, I swapped mine out a few months ago with no issues at all. I maintained constant current with my CTEK charger connected and have had no problems since.
Re: New battery coding
Posted: Mon Feb 23, 2015 5:39 pm
by Nobby
Sure Amar asked the same question and the answer was No.
Re: New battery coding
Posted: Mon Feb 23, 2015 5:47 pm
by classba
Just checked Elsawin and depending if you have the monitoring system then coding will be needed under 19 Canbus coding in the new battery part number and serial number. You also need to re activate the automatic closing of windows and re activate the keys ( including the spares ).
I have
Vag Com so will check this tomorrow.
Re: New battery coding
Posted: Mon Feb 23, 2015 5:50 pm
by R33
Interesting as I have TPMS (we all do) and advanced keys and all work OK since the swap, that said my TMPS has always been a bit temperamental.
Re: New battery coding
Posted: Mon Feb 23, 2015 6:02 pm
by classba
R33 wrote:Interesting as I have TPMS (we all do) and advanced keys and all work OK since the swap, that said my TMPS has always been a bit temperamental.
Could you remember if your negative terminal had a small module on it with a connection?. If you do then that's the monitoring system which controls the slave unit etc. I'll let you know tomorrow after I fit mine.
Re: New battery coding
Posted: Mon Feb 23, 2015 6:16 pm
by R33
There was something on one of the connectors, hmmm, I'll get MRC to check I did it right when it's there in a couple of weeks time.
Re: New battery coding
Posted: Mon Feb 23, 2015 6:25 pm
by skirs6
classba wrote:Just checked Elsawin and depending if you have the monitoring system then coding will be needed under 19 Canbus coding in the new battery part number and serial number. You also need to re activate the automatic closing of windows and re activate the keys ( including the spares ).
I have Vag com so will check this tomorrow.
What monitoring is that? I had a new battery a few months back no coding however the Cobra alarm I was unaware of decided to immobilise the car which required a ride on an RAC truck
Re: New battery coding
Posted: Mon Feb 23, 2015 6:35 pm
by classba
skirs6 wrote:classba wrote:Just checked Elsawin and depending if you have the monitoring system then coding will be needed under 19 Canbus coding in the new battery part number and serial number. You also need to re activate the automatic closing of windows and re activate the keys ( including the spares ).
I have Vag com so will check this tomorrow.
What monitoring is that? I had a new battery a few months back no coding however the Cobra alarm I was unaware of decided to immobilise the car which required a ride on an RAC truck
I'm not 100% sure but its something to do with shutting off some active usages if the car has stood still for days/weeks to maintain the battery voltage enough for it to start.
Re: New battery coding
Posted: Tue Feb 24, 2015 1:35 am
by Golfather
Yes it needs coding.
Use the BEM code which comes with the battery if OEM.
Or just renter the same code but change the serial number by one digit.
Early cars had batt regulator module, later ones this is done in the CAN module

Re: New battery coding
Posted: Tue Feb 24, 2015 1:42 pm
by classba
Thanks Golf... you are correct..it does need coding which is now done.
The MMI continued to display the old battery strength reading of 10% after it was installed and once coded, it displayed 100%.
Thanks.
Re: New battery coding
Posted: Tue Feb 24, 2015 2:17 pm
by R33
That will teach me to do DIY, at least I'm at MRC next week for a bunch of work so I'll add this to the ever lengthening list!
Re: New battery coding
Posted: Tue Feb 24, 2015 2:35 pm
by classba
R33 wrote:That will teach me to do DIY, at least I'm at MRC next week for a bunch of work so I'll add this to the ever lengthening list!
Ive asked Doug yesterday and he said no coding is needed which is incorrect. Do you have a VAG COM?....it's simple to code.
Regardless, you will need to undo the battery cover and take some photos of the battery part number, brand and serial number for coding.
Re: New battery coding
Posted: Tue Feb 24, 2015 2:51 pm
by R33
I don't have a
Vag Com but I'm sure if I ask them to do it they will. I have noticed sometimes that the car seems to think the battery is more flat than it actually is. Stuff like the boot won't open or shut without the engine running sometimes if the car has been powered up for a short time (i.e. ignition on, engine not running).
Re: New battery coding
Posted: Tue Feb 24, 2015 2:53 pm
by classba
R33 wrote:I don't have a VAG COM but I'm sure if I ask them to do it they will. I have noticed sometimes that the car seems to think the battery is more flat than it actually is. Stuff like the boot won't open or shut without the engine running sometimes if the car has been powered up for a short time (i.e. ignition on, engine not running).
Yes... just code it then you be fine.
If you're down my neck of the woods, I'll code it for you if that helps.