When replaced with the same battery, is the coding not really needed then or is it always needed? Trying to figure out if I can just replace my car battery.

@@NickBusscher You need to add a code, but it does not affect the management of the battery. It is just a text record in the system. Use the same BEM code and change one digit in the serial number and you will be OK

@@dimadee thanks! I don't have a vcds tool so I guess I'll bring it to a local audi shop then

Thank you this was helpful 👍🏻🙂

@@NickBusscher According to battery manufacturer BANNER you just need to change the battery. Only difference is that when you don't code it it just takes longer for the car to learn the new battery.

Hi, i have changed both battery in my phaeton and looks like i got to code them, i have both AGM installed both 95ah, but charging is different 14.4 for starter battery and 13.7 for system, i think starter battery have been coded as simple acid battery what been installed before, in what channel did you code both batteries?

@@vadimsim3915 Hi, did you solve the problem? How does the AGM batteies work with your Phaeton? I had AGM comfort battery and normal Lead Acid one for the starter, Phaeton started acting up (many electronic things not working properly) so I replaced the AGM with a normal Lead acid, problem solved, but my car destroys batteries every year to the point I get new ones under warranty. Do you know how to code them? which of these 3 procedures is correct for the dual battery Phaeton? Thanks

@@anzew88 Hey, I had no issue with new batteries, never coded, but I made sure nothing eats battery while it's 'sleeping', also make sure you charge comfort battery once in 2 month, depends how short your daily runs are

@@vadimsim3915 I have the comfort battery connected to magnetic socket, so during the winter the car is usually on charger during the night, because I run Webasto every morning and my drives are about 20 mins long. I just had my starter battery die after 10 months. Not having any ghost drains, car can be parked for 2-3 weeks starts fine, just not sure why it's eating through the batteries every year. At first I thought I got a bad batch of batteries, now it's not funny anymore.

@@anzew88 comfort battery should be AGM for sure, it supports much more charge cycles before it dies. Don't buy cheap battery, varta/bosh agm should work ok

have to replace my battery in my 2013 TDI, what battery did you use?? What VCDS interface did you use?? Thanks

I appreciate that this is two years down the line but... How do you determine which of the three techniques is the right one to use please ?

Yes, it's just a battery, but the Battery Management module makes certain assumptions about the battery's characteristics based on the battery coding. Don't blame us for this; we didn't come up with this stuff, we just make a tool that lets you do yourself what would otherwise require a trip to the dealer.

+Uwe Ross then why have people reported on audizine.com that even the dealers often don't bother with doing this for used cars?

And yet, so many have never needed to recode. That is a simple fact.

Then don't re-code, simple as that. Why bitch at Ross Tech, or anyone else that's not the manufacturer for that matter? It's not even the dealers' fault, so write a letter to Matthias Müller and whine about it, or, like the rest of us, change your battery and just drive your car.

Jason Walker​ I was asking why so many others have not needed to do this. Why does it bother you that I pointed it out? If some one else reads that then may not need to pay dealer cost for a batter and recoding and it saves them the money why does that seem to piss you off so much, keyboard warrior? Seems you are the only one whining. Comment was there for months and decided to get hostile about it.

Hahaa yea

The algorithm for the battery state detection, co-developed by Audi Electronics Venture GmbH, is core of the battery data module (BDM). The BDM is integrated group-wide into various Audi, VW, Seat, Skoda and Porsche models. The project participants are Audi, VW, Porsche (OEM), Lear Spain, Valls (hardware and operating system), HELLA, Lippstadt (hardware and operating system) and Audi Electronics Venture GmbH (software implementation, software testing, co-development of battery state detection algorithm).

I've had multiple VWs and Audis and always loved how Audi dealers charge more for the exact same part because their clientele tends to be richer.

Did you ever figure it out? I'm stuck in the same situation.

I have the same question. I have an Audi A3 8PA. Did you find the answer?

Can you provide a photo of said battery showing the BEM code sticker?

@@RossTechVCDS Can't figure out how to add a photo attachment to my reply

I also purchased a Diehard Gold from Advance Auto - DieHard Gold Battery, Group Size H8, 900 CCA Part No. 49H8 But no BEM sticker, also no reference to the Ah rating on this battery The battery I pulled out was a MLA 110Ah, only 850CCA (from a 2014 Q7TDI)

@@jasonl6380 Mine was a Group Size H9 . It looked different than the H8, I'm sure it was from a different Mfr. Diehard brand batteries are sourced from various manufacturers

Will disappear

disconnect the negative rail main battery sensor, no stop/start, use any battery you like, alternator will charge same as Mk1 TT, my batteries 8 years old.

DC/DC charger

Hi Rafael, I have just had my 2013 Tiguan Battery replaced & because it had Stop/Start on it it needed a dearer Battery & was set up with a meter by the Shop assistant after I had fitted it as it was not drivable, regards Terry.

What was the root cause of battery drain? Did you have to recode it? I thought in india the battery management system is kept off.

You're good.

If you need additional assistance then I would suggest to join our web forum at forums.ross-tech.com. It is a free service for our registered customers.

My understanding of this system is that as long as the battery you replaced didn't force the ECM into "Power Saving Mode" AND the new battery is very close (within 1-2 Ah of the battery being replaced), then the ECU will "learn" the new battery. It doesn't actually learn the new battery as the battery has no data link to the ECU, but the programming within the ECU will "reset" the learned parameters so it doesn't trigger certain sensors or low voltage alarms. I'm in the process of resetting a car that went into Power Saving because of a bad battery. I replaced the battery without knowing about this MMI Power Management System and 5 minutes into the test drive the car gave me a "alternator not charging battery" warning before it went bat shit crazy. It's fine now, but I initially looked into relays and fuses as this issue caused a number of electrical failures. The engine ran, but no other system in the car functioned including lights, transmission, abs, and stability control. As far as the car was concerned, those systems weren't even present.

Most VWs short of the last couple years of Touareg don't have a battery regulation control module nor battery registration. For the cars you listed, none will have an issue with you just replacing the battery and not doing any coding.

Richard Mackenzie did you solve this? I'm in the same boat :/

My understanding is code manufacturer and serial number not important. Only only battery technology and Ah

My advice to you is not to install a Lithium battery in any vehicle. If your car came with one, fine, I guess, but off-the-shelf Lithium batteries are really just not there yet.

Or just do what Mr. S said "... go into the BCM long coding and turn the energy management off".

If u have UDS protocol, there is no BEM module (61).

i tell you what will happens, the car calculates wrong starting amp, the battery will die in a few years faster... the car still calculates with a 68ah battery not with a 70ah

@@ForWhhY you are wrong!!!!!!!

I don't recall ever having an issue changing on all my VW's to a larger ah rated AGM battery from the OEM, less capacity flooded type....the alternator has a built in voltage regulator, don't it, which controls the alternator output, responding to battery and device loads....when the voltage of the battery is correct, alt stops charging, whether it's a high capacity or lower, its sensing battery voltage is at spec...just changed a 2018 tiguan, and a 2017 GTI to a larger aH capacity over OEM still H6 package, AGM, before they go bad, no programing of BEM since they are autoparts store batterys, all ya get are a dash filled with errors, that go away with driving around teh block, what else is there to be done, I have Vag Com, never redid battery sectors

Thats a function in most cars to stop the battery draining when it is purely using power. Most cars are either 30 mins or 1hr before radio switches off...

@@mgs090110 and usually you can switch on the radio again and then you will get another 30min again. It just keeps you from draining the battery accidentally.

As long as you buy the same spec (type and Ah) you just use the existing coding part number and add 1 to the serial or some other value that keeps the length the same but changes the value.

@@snapdragogon69 thank you for the tip, you are exactly correct!!👍

No, the coding is for the BEM (Battery Management System) to forget any learned values and to know that a new battery is installed. I wouldn't recommend installing the battery without letting the BEM know there's a new one.

Insta?

@@michaelbmw1931 simp

@@michaelbmw1931 WTF lol

How do you bump the existing serial number one digit? Is it first or last digit? It looks like my battery should have 000915105CD cod. Can you recommend aftermarket battery to purchase? I am considering DieHard Platinum AGM Battery: H9 Group Size, 950 CCA, 1000 CA, 100 Amp Hour Capacity. BTW I have 2018 audi a5 sportback. Thanks.

My varta battery was VAO not VA0. I thought my eyes were playing tricks

+madott Simple! To stop you doing it yourself and to get you to bring your vehicle back to the dealership! Repeat business makes more money for the company, and every business exists to make money!

There are alot easier ways to make an extra dollar then to have your battery code properly. like changing wipers.

So the car knows when to shut off consumers, what voltage to demand from generator and not under/overcharge, when to disable start/stop, when to turn off parking heater etc..

@@snapdragogon69 unfortunately that falls on deaf ears here because the average consumers feeble little mind cant comprehend the reasoning behind it. I'd try explaining it like a cell phone battery and how battery management works as something to relate to, even then it goes right over their simple heads. So many whining people , so little intelligence.

@@danr8194 up your selfritghous bum. There's a lot of people in this world that have spent their life learning other things that you know nothing about but we don't call you stupid because you can't do those things or you have to ask questions about those things. What a cheap piece of s*** you must be in your world.

no

That's like saying I just bought some old used brake pads from the scrap yard and they work fine no need to buy new ones. Of course but they don't work AS INTENDED.

yes.

+Ermal Spahiu Ross-Tech has free vehicle tech support at our web forum: forums.ross-tech.com/forum.php Sign up and post your questions in there and we should be able to help you out.

Impossible.

Use OBDEleven

31347 ?

no

@@lorant69szabo thanks¡¡

it will work without coding, but the battery will die in 1-2 years if you forget the coding, because the diffrence in AH, starting amp etc...

@@ForWhhY i try to code it but it wont let me. What do i need to do?? It wont show me anything on gateway. Am I doing something wrong?

@@sonydavid2 Man, I hope you figure it by now. Based on the year, you're car does not have an intelligent charging system, only cars that have start-stop system have this feature.

@@vladulescuadrian6080 yes i did :p thanks though 👍🏽👍🏽

Bernard Tripp Mostly Audi vehicles, starting with the 2004 A8L. More Audi vehicles got some form of BEM as newer generations of vehicles came out. The current gen Touareg as well.

RossTechVCDS Did the 1st Gen Touareg get this? Specifically the 04 V10s?

No

what year model vehicle? what version of VCDS?

@@tcap7917 2015 VW Jetta SE TDI. HEX-V2

Hello Again, i have Battery number 000 915 105 dg made in Germany by Varta, but i don"t have serial number it is peel out. Maybe is possible re code battery whit out serial number? Sincerely

1st time I've seen this video, many thanks. I do see people moaning about having to do this, yes part of it is keeping tabs of batteries being swapped for older,tired units while in manufacturers warranty period, yes I have seen this, but also battery management has moved on from the alternator just spinning, monitoring demand state of the unit, and requirements for maintenance of the charge with more control of the alternator.

you should buy battery with bem code, not a universal battery without the code.

Then just change 1 digit on the serial number is enough

@@oli31 First or last digit?

@@pr0xb0ct I think it doesn't matter, I don't remember which I did

www.ross-tech.com/distributors.php

But that would decrease fuel economy and the life of new battery.

@@Eren-da-Jaeger no it doesn't, my 2.5l mk6 jetta gets 37mpg on the highway and my voltages are exactly how they're supposed to be.

@Chilli Chillz need VCDS

This is what happens when German engineers say "halte mein bier".

All of this to theoretically save a couple of grams of CO2 and other exhaust by products. These are the times we are living in and this is only the beginning.

@@vladulescuadrian6080 I think it has more to do with maximizing the life of the battery. I've seen one case where the factory original battery lasted over 11 years a few month after date of manufacture. In most cases, I see factory batteries last over 8 years before they need to replace. So to that end, not so much a few grams of CO2 saved, but rather several kg of Pb in the long run.

@@RossTechVCDS Confirm, my battery in A4 2010 just died at 11.5 yr age. It's why I'm here)

But how the alternator would know its a new battery. I read that because the new battery holds charge better and doe not need much charging the bem would turn off the alternator when not needed.

@@Eren-da-Jaeger By the same way like in motocycle or in traktor (Fendt), understand, don't be cunning, yeah....

@@Eren-da-Jaeger it is all about electricity babe, fershtain du

@@Eren-da-Jaeger go back to school, and teech about electricity and resistance of batery.....

@@Eren-da-Jaeger the low of Ohm weel help you.....babe

It's needed for the stop/start feature to operate.

False, the car computer changes how it recharges the battery depending on its life, you are misleading

We offer free support to our registered customers on our web forum: forums.ross-tech.com

One guess. The start-stop function should know the AH rating and age of the battery so it knows when it's time to leave the engine on and charge.. I doubt the manufacturer matters that much though.. Getting so complex that one day, cars will throw a fault if you open a door with the wrong hand :(

@@snaplash We have a 2011 Q5 with no stop start, requires the same garbage.

On "other" cars you have to swap battery every ~5 years if you lucky. With bcm and proper coding roughly every ~10 years. So do your own math.

My nie, ale nasz polski dystrybutor tak. www.vcds.pl/