T6.1 Stop start battery replacement

[DarranKing68]

Hi, I am no mechanic but need to change the stop start batter on my T6.1.

It doesn’t look like a difficult task, but are there any pitfalls with doing it yourself, is it simply undoing the terminals and replacing or will there be other things need doing post replacement.

 

[Dellmassive]

It needs coding in...

Thread 'Upgrading Starter Battery - how to guide'

12 Jun 2019

My van (April 2017 T28) is fitted with a Moll battery.
I am experiencing some issues with it not starting after a few days sitting on the drive. Now this could be due to the tracker I have fitted draining it but I doubt it, I'll do some drain current tests before taking the plunge.
If I were to change the battery myself, could I replace it with a larger capacity one (eg a 95Ah 850A G14 Varta AGM which should just fit in the battery tray) instead of the standard 70Ah 700A Moll?
Is there anything I need to do to let the van know it has a different battery fitted? (I have VCDS if needed)

• Grim Reaper
• 3d0915105g battery coding how to guide moll varta vehicle battery
• Replies: 428
• Forum: Electrics, Lighting, ICE, Security

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[Dellmassive]

Halfords will fit it and code it for you

 

[StratosFearXX]

Do they need coding if you're swapping like for like?

 

[DarranKing68]

I checked the battery today I have 12.6v standing and 14v with the engine running which would suggest the battery is ok.

I have on two occasions over the past 2 months had a battery low warning flash up when starting the van. On both occasions driving less than 30 miles each time the message goes away. My first thought was the battery. But maybe it is not.

The van does stand unused most of the week, and depending on where I am fishing my journeys are generally short.

If it’s not the battery then what else could be giving me this warning and would something like carista help me diagnose remembering I’m a van noob and generally a mechanical moron

 

[ginkster]

Get a BM2 from Amazon. It allows you to monitor the battery over time and download via Bluetooth. That will give you a good insight into what the battery is doing.

 

[Sasquatch]

Do they need coding if you're swapping like for like?

Ideally yes.

However, the smart alternator is, er, smart and over the course of several hundred miles will notice a new battery and should do its own adaption and alter the charging profile to suit. Key word there is should.

 

[manfrotto]

Hi, I am no mechanic but need to change the stop start batter on my T6.1.

It doesn’t look like a difficult task, but are there any pitfalls with doing it yourself, is it simply undoing the terminals and replacing or will there be other things need doing post replacement.

You will also need to reset the learning for the single touch window up and down, and maybe clock, but all pretty easy.

 

[Dellmassive]

Do they need coding if you're swapping like for like?

Yes.

The vans computer will have the battery stats like Sate of health.

you need to reset the values to 100%.

.......


but you can fit the battery now, and get it coded in after - id do that within a month though.

 

[Salty Spuds]

Do they need coding if you're swapping like for like?

Not necessary. The van will adapt after a couple of weeks use.