New Battery Installed S7

RAF_S7

Well-Known Member
Gold Supporter
Over the last couple of weeks Ive found the (2016) S7 taking a bit longer than normal to start from cold, not a lot longer, but long enough to be noticeable, and after a week of being parked up it would really struggle - or just not turn over at all.

Did a check using VCDS, and got the results shown below, which were low enough to trigger a new battery purchase (The car had been driven for a couple of hours the previous day, tests were done from cold, with ignition on and engine off)

Screenshot 2021-03-31 at 15.24.51.png

The original OEM battery was a Varta AGM, 92Ah and 520Amp (OEM Code PR-J0B), and as I leave the car of long periods when Im working away, decided to fit the largest battery possible.
The Varta AGM 105Ah and 950Amps was sourced online (a UK eBay seller, and over 50% less than Europarts etc.!)
You can see the physical difference between the two batteries below. (And yes, heavier!)

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Installed in the car.

Recents - 1 of 1 (1).jpeg


I also decided to fit a remote battery monitor, and after hunting around on line settled for this Bluetooth connected device from Amazon. (You can search for it using "Auto Battery Monitor BM2" - under £26 :icon thumright: )

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This is a screen shot of the top level menu of the battery monitoring App. Lots of useful info - that doesn't need VCDS!

Screenshot_20210331-155344_Battery Monitor.jpg


The larger battery combined with the already packed S7 boot, with its suspension air-tank, combined with the shortish leads on the monitor meant it had to be mounted on the air-tank using double sided sticky tape. Note the -ve terminal secured to the air tank as it wouldn't fit under the battery cover!

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If you have access to VCDS (other diagnostic systems are available...) go to Select Control Module-->19-CAN Gateway-->Advance Measuring--> then check/tick the boxes relating to battery from the long list on the right hand side (You can ignore Battery 2 as not applicable to UK vehicles)

Cheers,
John :thumbs up::racer:
 

KrisKrk

A6 C6 4F 2010 LeMans Avant
Great write up and tip ont he bluetooth monitor. Cheers for that

I'm about to replace the battery in mine but do not have BEM code on it. Replacing Bosh acid one for larger Bosh AGM one.
Searched online and all pointers are for coding using BEM code.
Any tip with VCDS to code the battery without BEM?

Sent from my VOG-L29 using Tapatalk
 

RAF_S7

Well-Known Member
Gold Supporter
Great write up and tip ont he bluetooth monitor. Cheers for that

I'm about to replace the battery in mine but do not have BEM code on it. Replacing Bosh acid one for larger Bosh AGM one.
Searched online and all pointers are for coding using BEM code.
Any tip with VCDS to code the battery without BEM?

Sent from my VOG-L29 using Tapatalk
When you go into VCDS there are entries for Battery #1 & Battery #2. You only have to code Battery #1. #2 should be left uncoded.

Two out of the 3 fields are drop down menu’s, and pretty self explanatory so you shouldn’t have an issue. There is no specific AGM coding to be done.

The battery serial number can really be anything, including just changing one digit from the existing entry.

If there is no recognisable serial number visible on the new battery, I found scanning the QR code actually popped the serial number.

John :hi:
 
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