Dear members,

My Octavia start/stop battery has died down, so I had purchased an Excide AGM (EK700) battery and have got it replaced at a local garage (due to no availability of my usual garage). 

While I was watching mechanic carry out battery replacement, he simply replaced the old battery with a new one.

 

My understanding is the start/stop batteries require 'coding' to ensure it works properly.

- How do I know whether the battery has been 'coded' or not?

- Is there anything I can do to confirm that the battery is correctly replaced?

 

Thanks in advance for your help.

 

 

Needs a scan tool (vcds or such) to check in the battery management module that the serial number has been altered. Often the numbers are just 1111111 and merely changing one digit to another number will tell it has a new battery from which it will determine is charging characteristics. 

 

There is no way to know it's been coded without one.  

 

Battery capacity can be slightly increased or even type EFB to AGM etc. But coding is always necessary. 

Edited 30 October, 20205 yr by paulski

Thanks paulski!

I'll take the car back to the garage and see if mechanic can confirm it via VCDS. 

No coding and working after 9 months

If battery is like for like type & Ah is fine no coding required..the car will learn over time that a new battery has been fitted.

 

Changing the serial number 1 digit tells the module that a new battery has been fitted. 

 

AH capacity & type MUST match that of the battery installed...

Edited 31 October, 20205 yr by fabdavrav
clarity

On 31/10/2020 at 13:29, nkadovic said:

No coding and working after 9 months

 

Your battery is at 95% after 9 months. Your battery is shot or your car still thinks it is charging your old one 

^ That sounds completely wrong to me. 

Hi, can anyone else confirm this is correct?  Other posts on this forum seem to suggest that coding (1 digit change) is needed in all cases of battery replacement.

3 minutes ago, Irvworth said:

Hi, can anyone else confirm this is correct?  Other posts on this forum seem to suggest that coding (1 digit change) is needed in all cases of battery replacement.

Sorry, I can't figure out how to use this website!  I meant to quote the following post...

 

On 31/10/2020 at 21:41, fabdavrav said:

If battery is like for like type & Ah is fine no coding required..the car will learn over time that a new battery has been fitted.

 

Changing the serial number 1 digit tells the module that a new battery has been fitted. 

 

AH capacity & type MUST match that of the battery installed...

 

My OEM battery was replaced by the stealer under warranty. They replaced Varta 68Ah with Bosch S5 77Ah.

Few months later I decided to check was the car recoded after the battery change and it wasn’t. So I made the change myself with VCDS following this guide in RT wiki - http://wiki.ross-tech.com/wiki/index.php/Battery_Replacement

There is also a good video at the end of the page.

You need to “tell” the car that there is new battery by changing the serial number, size and vendor.
I used the actual S/N of the battery instead of changing 1111111’s to 1111112.. There is no vendor coding for Bosch, but since Varta and Bosch developed S5 and Silver Dynamic together, I used Varta’s symbols - VA0( they even have the same model number ).

 

Do a short research what VCDS adaptations need to be done and write down all the required values - serial number, part number, battery size, vendor, etc and then ask anyone with a cable to do the job.

I'll ressurect this thread. 

 

I bought a VCDS cable because I read so many places that coding was highly recommended. I installed the new battery now and f* me; the module shown in all videos I have seen on the topic, does not exist for me. Does anyone know if I can, and if so HOW, code a new battery on the Octavia mk3 2014? The new one is bigger than the other, so I would prefer if I could change that.

On 24/02/2024 at 15:42, nicosu said:

I'll ressurect this thread. 

 

I bought a VCDS cable because I read so many places that coding was highly recommended. I installed the new battery now and f* me; the module shown in all videos I have seen on the topic, does not exist for me. Does anyone know if I can, and if so HOW, code a new battery on the Octavia mk3 2014? The new one is bigger than the other, so I would prefer if I could change that.

 

All info in my old thread here:-

How to retro-fit a bigger capacity battery to a Mk7 Golf | GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum

 

VCDS coding required
From the Main screen:-
Select Control Module [Select]
[19-CAN Gateway]
Advanced Functions screen:-
[Adaptions-10]
New value choice screen:-
Change the following four channels, inputting the relevant data about the new battery.
IDE03256-MAS06105-Battery adaptation-Rated battery capacity
IDE03256-MAS06106-Battery adaptation-Battery technology
IDE03256-MAS06107-Battery adaptation-Battery manufacturer
IDE03256-MAS06108-Battery adaptation-Battery Serial Number

When you click on "Battery technology" (using VCDS 21.3.0) a drop down list appears with the following options (= actual meaning):-
Wet = Standard Lead Acid
Fleece = Standard A.G.M.
Wickel6V
Wickel12V
Ultracap
Gel = Standard Gel Lead Acid
Lithium ions = Standard LiFePO4
EFB = Standard E.F.B.
Binary - AGM = "Bipolar" A.G.M. type
EFB+ = E.F.B. "Plus" type
Not_assigned_10
Not_assigned_11
Not_assigned_12
Not_assigned_13
Not_assigned_14
Unknown

According to various sources of information, including numerous car scans & threads on Ross-Tech, "Fleece" is for standard AGM batteries, "EFB" is for standard EFB batteries, & "Wet" is for standard lead acid batteries, as these settings are used at the factory. The setting of "Binary - AGM" is apparently for specialist "Bipolar AGM" batteries! Also the drop down list is from VCDS & not generated by your car's BCM, therefore, your car may not support all the options on the list, & the BCM will reject the value when you tell it to accept it!

Battery BEM codes are now redundant with the above separate channels. The most important channels are:- Rated battery capacity, Battery technology, & Battery Serial Number. For the Battery Serial Number, just change one digit of the old one. This channel tells the BCM that a new battery has been installed & to relearn the new battery & forget any “learnt values” for the old battery!

On 24/02/2024 at 15:42, nicosu said:

I'll ressurect this thread. 

 

I bought a VCDS cable because I read so many places that coding was highly recommended. I installed the new battery now and f* me; the module shown in all videos I have seen on the topic, does not exist for me. Does anyone know if I can, and if so HOW, code a new battery on the Octavia mk3 2014? The new one is bigger than the other, so I would prefer if I could change that.

There is a possibility that as your car was an MY13 build, it might not have the stop/start (and in which case, you might not need to code up your new battery, but that's not a hard/fast rule).  If you have a genuine Ross-Tech system, I think (if I remember) rightly - there is two or three ways of coding up the battery (i.e. the modules seem to change from year/year and therefore the method of coding changes. Have a look here: http://wiki.ross-tech.com/wiki/index.php/Battery_Replacement

Edited 26 February, 20242 yr by varaderoguy

Two factors here:

 

1) Cars without start/stop generally don't have any battery management

 

2) For reasons known only to themselves VAG have two different implementations of battery management - one as a subset of the CAN Gateway at address 19, and one as a separate module at address 61. In every case I have seen an Octavia 3 that has start/stop has the subset of module 19 as the battery management implementation.