B8 A4 Battery Replacement - Coding

[NPuter]

Sorry to revive this, but I still haven't changed my coding from the original, and would like to get this figured out. This hasn't been top priority for me because everything works fine, and my dealer says they just swap out batteries without touching the coding.

So...

What coding should I use for my new battery (pics from original post). Thanks!

EDIT - I'm guessing I should try 000915105DH EMC 13110330H3 ?

[SDF1]

Sorry to revive this, but I still haven't changed my coding from the original, and would like to get this figured out. This hasn't been top priority for me because everything works fine, and my dealer says they just swap out batteries without touching the coding.

So...

What coding should I use for my new battery (pics from original post). Thanks!

EDIT - I'm guessing I should try 000915105DH EMC 13110330H3 ?

I have not figured out the EMC battery but as long as you reset the code it will readapt.
So
From 205# 000 915 105 DH #0803800#588119201#03111344*205EMC 3DB30H3E*=
I would put
EMC13110330H3
But since it is not EMC it's whatever you decide to put in the first 3 letters.

[B G 8er]

Why is this so confusing? I am actually in the same boat as Nick. Replaced mine the other day. Gave the dealer my vin and picked up what I assume is an exact replacement. Replaced myself since the car wouldn't even jump start.

Everything seems to be working fine so far. What will happen if it is not recoded?

If anything, I assume the energy management system would consider the new battery to be the old one and be more conservative on its usage? Also, why is there a separate QR code on the side of my new battery. When scanned it reads as 205# 000 915 105 DH #0803800 #588119201#20051421*205 EMC3E5K064G*=

Original battery lasted just under three years. Dealer said they'd have covered a replacement under warranty but they'd have to have done the the install in their service dept. New battery is only warranted for 12mo or 12k.

[SDF1]

Why is this so confusing? I am actually in the same boat as Nick. Replaced mine the other day. Gave the dealer my vin and picked up what I assume is an exact replacement. Replaced myself since the car wouldn't even jump start.

Everything seems to be working fine so far. What will happen if it is not recoded?

If anything, I assume the energy management system would consider the new battery to be the old one and be more conservative on its usage? Also, why is there a separate QR code on the side of my new battery. When scanned it reads as 205# 000 915 105 DH #0803800 #588119201#20051421*205 EMC3E5K064G*=

Original battery lasted just under three years. Dealer said they'd have covered a replacement under warranty but they'd have to have done the the install in their service dept. New battery is only warranted for 12mo or 12k.

So your old battery was an ENERTEC? If so PLEASE do a scan and tell us what your current car coding is!

Send me this screen shot please!

[B G 8er]

So your old battery was an ENERTEC? If so PLEASE do a scan and tell us what your current car coding is!

Send me this screen shot please!

Kinda lame on my part I know, but I don't have a VAGina COM cable.

Thanks for the willingness to help though Bro. Appreciated.

[TCHUN003]

The one with the red cap is the new battery...what should my new code be?

[SDF1]

Can you please take some more pictures of BOTH batteries.

It looks like your old battery is a Varta but I do not know what is the model of your new battery.
Please also take a photo of the QR Bar Code on both batteries.

[TCHUN003]

Can you please take some more pictures of BOTH batteries.

It looks like your old battery is a Varta but I do not know what is the model of your new battery.
Please also take a photo of the QR Bar Code on both batteries.

Looks like both are Varta AGM's

OLD:


NEW:

[TCHUN003]

OLD:


NEW:

[SDF1]

http://www.audizine.com/forum/showth...=1#post9481796

Weird I can't seem to figure out the QR code...
I could change the coding by 1 for the car to know it's a new battery.
So 3D091510H JCB590116G0Q9
to
3D091510H JCB590016G0Q9

[TCHUN003]

OK I'll enter that code and see what happens. Thanks again!

[B G 8er]

Never coded mine and still no issues. I think it depends what type of situation your car is in and how the battery dies. Mine lost charge over the course of about 10 days that i didn't drive it. Only thing I lost was I had to reset my clock.

[SDF1]

OK I'll enter that code and see what happens. Thanks again!

Just open up that side and change one of the numbers in the middle
So it says JCB5 XXXXXXXX6G0Q9
Only touch the XXXX I think those are the date the battery is made.
So the 3rd X just change it to one number less.
So I'd replace the 116 to 016.
that;s the safest.

[TCHUN003]

Okay so I changed it from 116 to 016 and it looks like the 'battery state of charge' decreased from 60% to 52%, the MMI value increased to 100%, and there was no change to the 'battery aging':

old


new

[SDF1]

Okay so I changed it from 116 to 016 and it looks like the 'battery state of charge' decreased from 60% to 52%, the MMI value increased to 100%, and there was no change to the 'battery aging':

old


new

battery capacity dropped to something realistic 100Ah was sketchy. 29Ah is believable. Check it again in a few days.

[Slick_B8]

205# 000 915 105 DH #0803800 #588119201#15091337*205 EMC3D9F1W93*=

Can some figure this out? Im so fucking lost ive tried everything! Pleaseeeeee lol

[Ox2gen]

Hmmmm.... when I go into Module 19 (CAN-Gateway) -> Measure Blocks -> Groups 18,19,20 no number values appear for any of the battery readouts. Anyone else encounter this? I have not replaced the battery yet so my battery has been running since April 2009. Maybe I should just replace it without finding out what's its present battery life.

[A4BGP]

Just going to revive this nonsense for a minute. Got a new battery from the dealer and noticed it had no BEM code on it. Said I had to bring the car in and have them install it as every car is different...

Many have run into the Enertec BEMless battery problem. Here's my take on this: the new battery is the same as the old Moll it replaces, ie: 12V 380A 80Ah 640CCA and identical in size. So it simply need a "new" code to understand that a fresh battery has been installed, yes? I coded the hoe with NPuter's old battey BEM# as his was the same part number as mine. MMI is now at 100% and Groups 18~20 are good.

[B G 8er]

I replaced mine a few months ago also with the exact same replacement battery from the dealer. Funny thing is, I disconnected the old battery for a couple of hours because the dealer wanted the old core exchange and It took me time to travel there and back. Hooked up the new battery and everything worked fine. Never recoded it and it seems to be working just fine. The only thing I had to reset was my clock.

[k3nnis]

Hi Guys,

I am in Australia. My battery was very low and I knew it was on its way out. I started it this morning at 5 degrees celcius and was struggling a bit, drove for 30 mins to another house and turned off engine for 15 mins. Tried to start it up again no go. So had roadside assistance replace a generic branded battery for me (Supercharge) is the brand. Do I need to code it in VAGCOM? I have the cable but do I need to code it? Battery indicator on MMI is showing just over 50% with this new battery. I did not have to chnage the clock or anything, everything worked.

If I have to code it, what manufacturer, BEM and part number do I use???

My old battery was a MOLL branded one. My new one has a higher CCA value.

Some pictures of the new battery:





Thanks,
K.

[SDF1]

Change the current coding by 1 digit.

[k3nnis]

The BEM by 1 or part number? When you say by 1 digit you mean if it ends with 2 change it to 3?

[Redd]

Sorry to bring up an older thread, but I'm in a similar pickle right now.

I've replaced the OEM Varta 75Ah battery with a new 95Ah battery, which is made by JCI, which makes the Varta batteries in the US. So ideally I need the BEM coding for the Varta 95Ah battery for an Audi 2014 Q5, and since I don't have a Varta battery handy to copy that from...Any help greatly appreciated.

I have the VCDS software available to do the actual recoding, but I need those code numbers.

Anyone?

[Novarider]

All you have to do is change the serial number by 1 digit. Change any number in the serial to another number and the computer knows you have a new battery.

[Redd]

Thanks, Nova, but that's totally wrong. I am replacing a 75A battery with a 90A battery and if only the serial number is changed, the car will radically undercharge it and kill it way before its time.

The battery coding tells the system what the battery capacity is, and the system is smart enough to measure charge and discharge as well as battery voltage to try keeping the battery fully charged. It even measures battery temperature, and compensates the charging voltage for that. (Which is a fairly important factor in commercial chargers, usually omitted in cars.)

The serial number is fluff, just German OCD. The battery management system does not do anything with that.

[Novarider]

Thanks, Nova, but that's totally wrong. I am replacing a 75A battery with a 90A battery and if only the serial number is changed, the car will radically undercharge it and kill it way before its time.

The battery coding tells the system what the battery capacity is, and the system is smart enough to measure charge and discharge as well as battery voltage to try keeping the battery fully charged. It even measures battery temperature, and compensates the charging voltage for that. (Which is a fairly important factor in commercial chargers, usually omitted in cars.)

The serial number is fluff, just German OCD. The battery management system does not do anything with that.

It's not "totally wrong". All that is required when replacing the battery is what I stated above and has been confirmed by a member here who is an Audi tech.

[Redd]

It's not "totally wrong". All that is required when replacing the battery is what I stated above and has been confirmed by a member here who is an Audi tech.

No, you've lost something in translation while talking to that tech or to me.

If you replace a battery with THE EXACT SAME BATTERY, same maker, same capacity, same type (AGM or wet lead), then what he confirmed is correct.

But look at what I said. I'm replacing at 75A battery (H6) with the larger 95A (H8) size.

You MUST tell the system the correct battery capacity, and depending on the software interface, that is either being read from a lookup table according to the BEM, or it is entered manually.

If you look at the VCDS scans for the specifics of the charging system, it can tell you the state of charge (SOC), the number of amps remaining in the battery, the voltage, the approximate life left, the charge rate, and even more details. And it does that for both batteries, if you have the auxiliary battery installed and enabled. It also reports charging voltage at the generator [sic] as well as at two battery charging points.

This is a sophisticated battery management system. Give it the wrong information, and it will eat your battery. I've seen batteries last 4 years, and 8 years, and 2 years. All the same quality batteries, just the charging systems not set up properly for them. And AGM batteries, unlike wet lead, need to be 100% recharged, which cannot be done unless the controller knows their capacity. If they are "best guess" charged they will die young from over or under charging.

Every battery maker will tell you the same thing. Not some guy who took a course and got overalls--but the electrical engineers who you can't normally get on the phone, who actually design the systems.

Drop in the SAME battery? Sure, just tell the car one digit on the serial number is new. (The serial number is only in there in case you are trying to cheat on a battery warranty claim, the car doesn't use it for anything else.) Drop in one of the many different batteries that are available? Then the car needs to be PROGRAMMED.

Not my opinion. This comes from the folks who make the systems, confirmed by real world experience.

[Gunnark100]

sorry to bring up an older thread, but i'm in a similar pickle right now.

I've replaced the oem varta 75ah battery with a new 95ah battery, which is made by jci, which makes the varta batteries in the us. So ideally i need the bem coding for the varta 95ah battery for an audi 2014 q5, and since i don't have a varta battery handy to copy that from...any help greatly appreciated.

I have the vcds software available to do the actual recoding, but i need those code numbers.

Anyone?

000915105dk va0 330831v2w6

[Redd]

000915105dk va0 330831v2w6

Thank you, Gunnark!
I'd seen some listings online for the batter, where they indicated the first group of digits as a "part number" or other term, and it sure looks like the BEM to me. Which would make sense, each unique battery would only need one unique number, assuming a "parts inventory" could accept the same format.

You have had success recoding with this number, after replacing a different or smaller battery with the H8 AGM?

[jfo]

No, you've lost something in translation while talking to that tech or to me.

If you replace a battery with THE EXACT SAME BATTERY, same maker, same capacity, same type (AGM or wet lead), then what he confirmed is correct.

But look at what I said. I'm replacing at 75A battery (H6) with the larger 95A (H8) size.

You MUST tell the system the correct battery capacity, and depending on the software interface, that is either being read from a lookup table according to the BEM, or it is entered manually.

Do you know if the amp hour rating is the only key spec used by the BEM system? I had to replace my battery with an aftermarket AGM with no BEN code. It is the same AH rating as the OEM but it has higher CCA. I have used the original part number and modified the date segment of the serial number.
I was under the impression that the serial number included a date of manufacture code which is also used by the BEM system.

[Gunnark100]

Thank you, Gunnark!
You have had success recoding with this number, after replacing a different or smaller battery with the H8 AGM?

No, this was for 95ah non AGM bem code, for AGM your best way is go with BEM code for 92AH (only one closest to yours in 8K,8R,8T platform!)
https://data.motor-talk.de/data/gall...4244728490.jpg

[jfo]

No, this was for 95ah non AGM bem code, for AGM your best way is go with BEM code for 92AH (only one closest to yours in 8K,8R,8T platform!)
https://data.motor-talk.de/data/gall...4244728490.jpg

How do you interpret this BEM for a date code? JCB 420412C09T

Everything I've read suggests the first 6 digits are the date. My earlier version of that same battery is JCB 101123N08R, which apparently means 23 Nov 2010. The BEM sticker shows JCB1A1123N08R, where 1A apparently refers to the year, 10. This is consistent with the date code stamped on the -ve terminal - 47/10 for week 47, 2010.

Confusing...

Edit: Gunnark, are you able to post the entire QR code in the photo?

[Gunnark100]

Edit: Gunnark, are you able to post the entire QR code in the photo?

No I cant, no full pic of this battery, but if you take other example from here:
https://goo.gl/images/5VvstS

You get scan and idea! But there is no need or point convert this bem code, as date is for car(energy manager) useless!

[jfo]

No, you've lost something in translation while talking to that tech or to me.

(The serial number is only in there in case you are trying to cheat on a battery warranty claim, the car doesn't use it for anything else.) Drop in one of the many different batteries that are available? Then the car needs to be PROGRAMMED.

Not my opinion. This comes from the folks who make the systems, confirmed by real world experience.

Please elaborate...
How does the BEM system get new battery profiles or look up tables you refer to? Battery part numbers are constantly changing as they are discontinued and replaced with new numbers. The serial number also contains date and model info...how can it be just fluff? The battery in Gunnarks link is the same part number called out for my 2011. While the specs are the same, the part number and BEM code are now different. How does the ECU interpret this as being the same as the original specs if it's using a look up table in a data base?

[jfo]

No I cant, no full pic of this battery, but if you take other example from here:
https://goo.gl/images/5VvstS

You get scan and idea! But there is no need or point convert this bem code, as date is for car(energy manager) useless!

Thanks. That battery in the first link is the model spec'd for my Avant, so I was curious about the expanded code and how it differs from my original code. Do you know what info the ECU uses from the BEM code?

[Gunnark100]

Do you know what info the ECU uses from the BEM code?

I have no idea, my estimated guess is none(same like with any other part, just a individual serial number, except regarding battery it tells the system it has been replaced, as some mvb-s starts count from 0 again etc, car only uses part number and getting battery spec from there!

Just my opinion, nothing more.

[jfo]

I have no idea, my estimated guess is none(same like with any other part, just a individual serial number, except regarding battery it tells the system it has been replaced, as some mvb-s starts count from 0 again etc, car only uses part number and getting battery spec from there!

Just my opinion, nothing more.

Thanks for clarifying. I'm asking since Redd has suggested there are serious problems if the right info is not entered. I don't know if this is his opinion or if he has facts to support that, so I've asked him to provide details.
Another interesting point...I called my dealer who is very helpful, and asked him to give me the BEM code for my spec'ed battery. He took photos of all the info on the battery and there is no BEM code sticker, just the part number QR code. He said all 3 in stock were the same. Apparently some no longer have the original style BEM code. He wasn't familiar with how the system uses the info.

[Gunnark100]

Apparently some no longer have the original style BEM code. He wasn't familiar with how the system uses the info.

Yes, not long time ago was a post somewhere in S4 section with same info, that dealer did not have full bem code(part nr+serial) anymore on batteries etc, so I guess nobody plays with those anymore, all just change one digit of serial if spec remain same or does not change at all(I will keep changing, just my 2 cents:)).

[Redd]

jfo-
I should make clear, I am not saying there WILL BE serious problems. Only that there MIGHT BE problems affecting battery longevity, if:
1-The system is intended to be programmed with using all the parameters that it is showing
2-The system is making some sophisticated charging control decisions based on those parameters.

It is possible that these are all nonsense. That the system employs a "dumb" brute force three stage or two stage charging logic, and that it makes no accommodation for wet lead versus AGM or anything else.

My (mild) concern is that we just don't know. And since the system is tracking an awful lot of numbers for no obvious purpose...but it still seems able to kill batteries prematurely...Why not try to find out what it is really up to? Perhaps it is just a point of pride, and Audi are trying to convince us that their charger is more advanced than a 1970 Detroit product. (Although, as far as I can remember, ACDelco put some parts in the lunar lander, which Audi and Bosch never did.(G)

[jfo]

jfo-
I should make clear, I am not saying there WILL BE serious problems. Only that there MIGHT BE problems affecting battery longevity, if:
1-The system is intended to be programmed with using all the parameters that it is showing
2-The system is making some sophisticated charging control decisions based on those parameters.

It is possible that these are all nonsense. That the system employs a "dumb" brute force three stage or two stage charging logic, and that it makes no accommodation for wet lead versus AGM or anything else.

My (mild) concern is that we just don't know. And since the system is tracking an awful lot of numbers for no obvious purpose...but it still seems able to kill batteries prematurely...Why not try to find out what it is really up to? Perhaps it is just a point of pride, and Audi are trying to convince us that their charger is more advanced than a 1970 Detroit product. (Although, as far as I can remember, ACDelco put some parts in the lunar lander, which Audi and Bosch never did.(G)

Agreed, we don't really know and it's unlikely we will uncover the details without some engineering insight from Audi. I have threads on this same coding question going back to 2011. So far, I haven't seen any follow up posts about premature battery death after doing the altered code approach. There could have been problems that people haven't posted about, but I haven't seen any red flags about this approach....except yours. In any case, I personally didn't have much choice since I wasn't about to drive 3 hours and pay to get a dealer battery installed. Even had I picked up the battery at the dealer, there is no BEM code on the new battery as I posted above.
It will likely remain a mystery!