Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
New Battery Problem Registering with Carly
- RobbiZ4
- Senior Member
- Posts: 1359
- Joined: Wed May 16, 2018 10:12 am
- Location: Munich
- Contact:
New Battery Problem Registering with Carly
Well, interestig myth.

Z4 E89 Roof Topics
viewtopic.php?t=130932
Y1 ... Y4 Roof Diagnostic Systems for BMW, AUDI, VOLVO
viewtopic.php?f=23&t=129048
- B21
- Lifer
- Posts: 7048
- Joined: Tue Oct 05, 2021 7:15 pm
- Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia
New Battery Problem Registering with Carly
Well you're incorrect..road warrior wrote: ↑Fri Jan 31, 2025 6:33 am If the spec is the same there is no need to register. Only if you need to tell the system your needing different charging requirements such as a bigger or smaller capacity.
On E89s everytime the battery is changed the change needs to be registered to allow the DME to work out best to manage that battery..
Additionally if you change the capacity of the battery you need to code it..that is allow the DME know that the capacity and maybe type has changed.
“We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard”….
One of 258 Atacama Yellow 35is…165 modifications and updates…and counting..
One of 258 Atacama Yellow 35is…165 modifications and updates…and counting..

- DonDon
- Member
- Posts: 250
- Joined: Fri Apr 21, 2023 9:42 am
- Location: North Hampshire - the original and best
New Battery Problem Registering with Carly
If you don't code or register the new battery as appropriate, it will still work, but you won't get the best life and performance out of it.road warrior wrote: ↑Fri Jan 31, 2025 6:33 am If the spec is the same there is no need to register. Only if you need to tell the system your needing different charging requirements such as a bigger or smaller capacity.
2013 E89 28i auto
- road warrior
- Senior Member
- Posts: 2305
- Joined: Wed May 23, 2018 2:12 pm
- Location: Burton On trent
New Battery Problem Registering with Carly
Ok, prove that statement please, I mean PROVIDE DOCUMENTED PROOF. I say again, if the spec is the same, the battery is the same. This requirement is based on the ecu knowing what to charge and for how long. If its identical... what would you change aside from the date and serial number, and as most people will tell you is to simply put a line of zero's. Mainly because it's almost impossible to find a serial number on a battery and mostly because the ecu doesn't care what the serial number is.
If you ever think I'm off my rocker.. Just put me back in it and walk away... It's the kindest thing
My wife says I never listen - or something like that.
gone but not forgotton -Mean Steve - made a sound like a bear with his nuts in a trap.
My wife says I never listen - or something like that.
gone but not forgotton -Mean Steve - made a sound like a bear with his nuts in a trap.
- B21
- Lifer
- Posts: 7048
- Joined: Tue Oct 05, 2021 7:15 pm
- Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia
New Battery Problem Registering with Carly
From TIS BMW's online service manual for E89sroad warrior wrote: ↑Sat Feb 01, 2025 11:47 am Ok, prove that statement please, I mean PROVIDE DOCUMENTED PROOF. I say again, if the spec is the same, the battery is the same. This requirement is based on the ecu knowing what to charge and for how long. If its identical... what would you change aside from the date and serial number, and as most people will tell you is to simply put a line of zero's. Mainly because it's almost impossible to find a serial number on a battery and mostly because the ecu doesn't care what the serial number is.
section newTIS
Home / BMW E89 Z4 sDrive35is Roadster / Wiring Diagrams and Functional Description / Body / Voltage supply /
Intelligent battery sensor and battery
Notice! Register battery replacement
After installing a new battery, the service function 'Register battery replacement' should be run. The battery replacement has to be registered in order to tell the power management system that a new battery has been installed in the vehicle. If the battery replacement is not registered, the power management will not function properly, with the result that Check Control messages may be displayed and functions limited by individual electrical consumers being switched off or having their power consumption reduced, for example.
and..
Proper operation of all of these safety and convenience functions requires a battery that conforms with specifications and that is properly registered in vehicles with energy management systems (IBS, power module).
Vehicles with energy management systems (IBS, power module): Register battery exchange.
The vehicle electrical system is informed about the vehicle battery characteristic data, such as type, size, age and current power capacity. Therefore, there will always be only one work scope provided that is permitted by the current status of information.
When installing a new vehicle battery, the battery must be registered and thus must also be registered with the vehicle electrical system.
Diagnosis system:
Register battery exchange.
Service functions
Body
Voltage supply
Register battery exchange
When retrofitting, a more powerful battery may be used. Standard batteries may always be replaced by AGM batteries with the same specifications.
When installing a battery of a different size or a different battery type, this change in vehicle data must be programmed into the vehicle data in accordance with specifications.
Programming system:
Battery retrofitting
Maybe the Earth is flat..
“We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard”….
One of 258 Atacama Yellow 35is…165 modifications and updates…and counting..
One of 258 Atacama Yellow 35is…165 modifications and updates…and counting..

- road warrior
- Senior Member
- Posts: 2305
- Joined: Wed May 23, 2018 2:12 pm
- Location: Burton On trent
New Battery Problem Registering with Carly
lovely, now where does it say .. "even if the replacement battery is absolutely identical" you have to waste a part of your life telling the cpu its identical in every way ? i feel like Dave Lister feels when he talks to Rimmer. Are you going to put me on a charge ? No wait .. not a charge,
as TIS so elequently explains.. "intelligent battery sensor and battery" IF its intellegent WHY you have to tell it ?
i wonder... if you cover a seat with an identical seat cover do you have to tell carly ? or the wife, or the bank manager , or the bad taste god?
see below for proof of my existance.
as for BMW saying register it - i rather suspect a VISIT TO THE DEALER is imagined - ca ching..
If a tree falls in a forest does it make a sound ?
Do bears s**t in the woods
Has the pope got a balcony ?
Does it count if you just scan irrelevent documentation to prove god exists ?
should i get out more ? should i get out less ?
ahh i hear the frantic banging of keyboards from here
poking aside - i see absolutely no mention of identical battery fitting instructions, why would there be ?
TELL YOU WHAT. this is a challenge to all OCD folk ( might be one or two on here i suspect)
when you replace your battery next with IDENTICAL specifications, run it for a MONTH without telling carly or his mates like TIS, and measure battery (SOC) capacity THEN tell the computer you have a NEW shiny identical battery and after another month see if there is a differance.

as TIS so elequently explains.. "intelligent battery sensor and battery" IF its intellegent WHY you have to tell it ?
i wonder... if you cover a seat with an identical seat cover do you have to tell carly ? or the wife, or the bank manager , or the bad taste god?
see below for proof of my existance.
as for BMW saying register it - i rather suspect a VISIT TO THE DEALER is imagined - ca ching..
If a tree falls in a forest does it make a sound ?
Do bears s**t in the woods
Has the pope got a balcony ?
Does it count if you just scan irrelevent documentation to prove god exists ?

should i get out more ? should i get out less ?
ahh i hear the frantic banging of keyboards from here

poking aside - i see absolutely no mention of identical battery fitting instructions, why would there be ?
TELL YOU WHAT. this is a challenge to all OCD folk ( might be one or two on here i suspect)
when you replace your battery next with IDENTICAL specifications, run it for a MONTH without telling carly or his mates like TIS, and measure battery (SOC) capacity THEN tell the computer you have a NEW shiny identical battery and after another month see if there is a differance.
Last edited by road warrior on Tue Feb 04, 2025 6:14 pm, edited 2 times in total.
If you ever think I'm off my rocker.. Just put me back in it and walk away... It's the kindest thing
My wife says I never listen - or something like that.
gone but not forgotton -Mean Steve - made a sound like a bear with his nuts in a trap.
My wife says I never listen - or something like that.
gone but not forgotton -Mean Steve - made a sound like a bear with his nuts in a trap.
- Chippie
- Senior Member
- Posts: 2569
- Joined: Tue Apr 30, 2019 9:11 pm
- Location: Wakefield
New Battery Problem Registering with Carly
Notice! Register battery replacement
After installing a new battery, the service function 'Register battery replacement' should be run. The battery replacement has to be registered in order to tell the power management system that a new battery has been installed in the vehicle. If the battery replacement is not registered, the power management will not function properly, with the result that Check Control messages may be displayed and functions limited by individual electrical consumers being switched off or having their power consumption reduced, for example.
Would BMW expect you to fit a different amperage battery? Probably not
Do they expect replacing with the same? Probably, so they give instructions to register it.
After installing a new battery, the service function 'Register battery replacement' should be run. The battery replacement has to be registered in order to tell the power management system that a new battery has been installed in the vehicle. If the battery replacement is not registered, the power management will not function properly, with the result that Check Control messages may be displayed and functions limited by individual electrical consumers being switched off or having their power consumption reduced, for example.
Would BMW expect you to fit a different amperage battery? Probably not
Do they expect replacing with the same? Probably, so they give instructions to register it.
E89 35is space grey Kansas coral red leather
- B21
- Lifer
- Posts: 7048
- Joined: Tue Oct 05, 2021 7:15 pm
- Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia
New Battery Problem Registering with Carly
You're wasting your time (as I have)..probably in the same 60 cigarettes a day never did my Dad any harm etc..since he can't read or maybe English comprehension wasn't his strong point...Chippie wrote: ↑Tue Feb 04, 2025 6:05 pm Notice! Register battery replacement
After installing a new battery, the service function 'Register battery replacement' should be run. The battery replacement has to be registered in order to tell the power management system that a new battery has been installed in the vehicle. If the battery replacement is not registered, the power management will not function properly, with the result that Check Control messages may be displayed and functions limited by individual electrical consumers being switched off or having their power consumption reduced, for example.
Would BMW expect you to fit a different amperage battery? Probably not
Do they expect replacing with the same? Probably, so they give instructions to register it.


Key point for all others ..pls register a replacement battery, and if its different capacity code it then register it!

“We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard”….
One of 258 Atacama Yellow 35is…165 modifications and updates…and counting..
One of 258 Atacama Yellow 35is…165 modifications and updates…and counting..

- axelleveau
- Member
- Posts: 344
- Joined: Thu Dec 02, 2021 9:46 am
New Battery Problem Registering with Carly
Sharing some knowledge for old-folks scared of zappy electrons as it is close to me everyday at work (no wonders EVs are not welcomed...):
-A new battery, even if identical make, model and capacity is in fact NOT the same, if it were then the old battery would not need changing as it would hold charge and crank just fine!
-The old battery has suffered three things: a loss of capacity, an increase of resistance (lower cranking amps) and an increase in self-discharge (dies on it own when car is parked)
-The car continuously adapts to that evolution and will adjust by keeping SOC to a higher/lower/narrower level and/or charge more gently and such, hence the need to tell it a new battery has been installed so it can reset and re-learn, sorry things have changed since the 80s
-A new battery, even if identical make, model and capacity is in fact NOT the same, if it were then the old battery would not need changing as it would hold charge and crank just fine!
-The old battery has suffered three things: a loss of capacity, an increase of resistance (lower cranking amps) and an increase in self-discharge (dies on it own when car is parked)
-The car continuously adapts to that evolution and will adjust by keeping SOC to a higher/lower/narrower level and/or charge more gently and such, hence the need to tell it a new battery has been installed so it can reset and re-learn, sorry things have changed since the 80s

Gone - Ford Ka MK2 Petrol - Black
Will hang around to carry materials/people and in emergency - Ford Fiesta MK7 1.0 Ecoboost - Black, white rally rims, white decals, remapped
Now - Z4 Coupe - Montego Blue: Here
Will hang around to carry materials/people and in emergency - Ford Fiesta MK7 1.0 Ecoboost - Black, white rally rims, white decals, remapped
Now - Z4 Coupe - Montego Blue: Here
- RobbiZ4
- Senior Member
- Posts: 1359
- Joined: Wed May 16, 2018 10:12 am
- Location: Munich
- Contact:
New Battery Problem Registering with Carly
As said:
Registering means resetting & updating most of the (old) battery statistics collected inside of the DME.
https://www-zroadster-com.translate.goo ... st-3613426

Some additional background infos for interested members. Ignorers should ignore it!

Registering means resetting & updating most of the (old) battery statistics collected inside of the DME.
https://www-zroadster-com.translate.goo ... st-3613426

Z4 E89 Roof Topics
viewtopic.php?t=130932
Y1 ... Y4 Roof Diagnostic Systems for BMW, AUDI, VOLVO
viewtopic.php?f=23&t=129048
- Reamesy
- Member
- Posts: 864
- Joined: Mon Aug 31, 2020 12:40 pm
- Location: Whitchurch
New Battery Problem Registering with Carly
You asked for proof. You were given proof. It’s up to you what you do with it.road warrior wrote: ↑Tue Feb 04, 2025 5:47 pm lovely, now where does it say .. "even if the replacement battery is absolutely identical" you have to waste a part of your life telling the cpu its identical in every way ? i feel like Dave Lister feels when he talks to Rimmer. Are you going to put me on a charge ? No wait .. not a charge,![]()
as TIS so elequently explains.. "intelligent battery sensor and battery" IF its intellegent WHY you have to tell it ?
i wonder... if you cover a seat with an identical seat cover do you have to tell carly ? or the wife, or the bank manager , or the bad taste god?
see below for proof of my existance.
as for BMW saying register it - i rather suspect a VISIT TO THE DEALER is imagined - ca ching..
If a tree falls in a forest does it make a sound ?
Do bears s**t in the woods
Has the pope got a balcony ?
Does it count if you just scan irrelevent documentation to prove god exists ?![]()
should i get out more ? should i get out less ?
ahh i hear the frantic banging of keyboards from here![]()
poking aside - i see absolutely no mention of identical battery fitting instructions, why would there be ?
TELL YOU WHAT. this is a challenge to all OCD folk ( might be one or two on here i suspect)
when you replace your battery next with IDENTICAL specifications, run it for a MONTH without telling carly or his mates like TIS, and measure battery (SOC) capacity THEN tell the computer you have a NEW shiny identical battery and after another month see if there is a differance.
If you don’t like it. Then don’t follow it. Simples. Anyone else it’s there for a reason.
For a 5 min solution, why risk a £100-200 battery. We know how fussy the car can be over battery health.
Currently; 2011 E89 23i SDrive M Sport Highline Titan Silver
Previously;
2014 SLK250CDI AMG Sport
2012 E89 SDrive 2.0 M Sport. White
2011 Audi TT Quattro
2006 Z4 2.5 Sport
2013 420D coupe
2002 Z3 2.2 Sport
1996 Z3 1.9
Previously;
2014 SLK250CDI AMG Sport
2012 E89 SDrive 2.0 M Sport. White
2011 Audi TT Quattro
2006 Z4 2.5 Sport
2013 420D coupe
2002 Z3 2.2 Sport
1996 Z3 1.9
- enuff_zed
- Lifer
- Posts: 17159
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
New Battery Problem Registering with Carly
I believe Mr Road Warrior's experience is with the E85, which does not have the same IBS and therefore doesn't need all this coding. The E89 does.Reamesy wrote: ↑Sat Feb 08, 2025 10:13 amYou asked for proof. You were given proof. It’s up to you what you do with it.road warrior wrote: ↑Tue Feb 04, 2025 5:47 pm lovely, now where does it say .. "even if the replacement battery is absolutely identical" you have to waste a part of your life telling the cpu its identical in every way ? i feel like Dave Lister feels when he talks to Rimmer. Are you going to put me on a charge ? No wait .. not a charge,![]()
as TIS so elequently explains.. "intelligent battery sensor and battery" IF its intellegent WHY you have to tell it ?
i wonder... if you cover a seat with an identical seat cover do you have to tell carly ? or the wife, or the bank manager , or the bad taste god?
see below for proof of my existance.
as for BMW saying register it - i rather suspect a VISIT TO THE DEALER is imagined - ca ching..
If a tree falls in a forest does it make a sound ?
Do bears s**t in the woods
Has the pope got a balcony ?
Does it count if you just scan irrelevent documentation to prove god exists ?![]()
should i get out more ? should i get out less ?
ahh i hear the frantic banging of keyboards from here![]()
poking aside - i see absolutely no mention of identical battery fitting instructions, why would there be ?
TELL YOU WHAT. this is a challenge to all OCD folk ( might be one or two on here i suspect)
when you replace your battery next with IDENTICAL specifications, run it for a MONTH without telling carly or his mates like TIS, and measure battery (SOC) capacity THEN tell the computer you have a NEW shiny identical battery and after another month see if there is a differance.
If you don’t like it. Then don’t follow it. Simples. Anyone else it’s there for a reason.
For a 5 min solution, why risk a £100-200 battery. We know how fussy the car can be over battery health.
However, don't worry about it because if he does try his own suggestion then in a month he will have reached the edge of the world and fallen off.

- RobbiZ4
- Senior Member
- Posts: 1359
- Joined: Wed May 16, 2018 10:12 am
- Location: Munich
- Contact:
New Battery Problem Registering with Carly
I don't think so.
The whole IBS stuff came up with the start/stop functionality. The DME has to know the constitution of the car's battery before switching off the motor at a ( i.e.) crossing.
That's the reason why the DME is tracking each battery activity: loading, unloading, temperatures, histories etc.
It calculates the aging process in the background 24/7 and at least gives an advice on the dash to get it renewed after an individual time of usage.
If you don't reset this history, dashboard messages may reappear even with a new battery, as the system requires some time to adapt the condition of the new battery (SOC & QOC). It's indeed a learning curve, which again will arise over time.
It's not so critical for "our" E89's, as there is no start/stop function implemented on the 6-pot engines. The 4-pot's indeed were delivered with this functionality and require this "reset"/registering.
One of the IBS develepment manager from BMW is living in Munich and drives a 6-pot E89 Z4 as well.
Last edited by RobbiZ4 on Sat Feb 08, 2025 1:51 pm, edited 1 time in total.

Z4 E89 Roof Topics
viewtopic.php?t=130932
Y1 ... Y4 Roof Diagnostic Systems for BMW, AUDI, VOLVO
viewtopic.php?f=23&t=129048
- enuff_zed
- Lifer
- Posts: 17159
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
New Battery Problem Registering with Carly
RobbiZ4 wrote: ↑Sat Feb 08, 2025 11:36 amI don't think so.
The whole IBS stuff came up with the start/stop functionality. The DME has to know the constitution of the car's battery before switching off the motor at a ( i.e.) crossing.
That's the reason why the DME is tracking each battery activity: loading, unloading, temperatures, histories etc.
It calculates the aging process in the background 24/7 and at least gives an advices on the dash to get it renewed after an individual time of usage.
If you don't reset this history, dashoard messages may reappear even with a new battery, as the system requires some time to adapt the condition of the new battery (SOC & QOC). It's indeed a learning curve, which again will arise over time.
It's not so critical for "our" E89's, as there is no start/stop function implemented on the 6-pot engines. The 4-pot's indeed were delivered with this functionality and require this "reset"/registering.
One of the IBS develepment manager from BMW is living in Munich and drives a 6-pot E89 Z4 as well.

- DonDon
- Member
- Posts: 250
- Joined: Fri Apr 21, 2023 9:42 am
- Location: North Hampshire - the original and best
New Battery Problem Registering with Carly
My 2013 28i doesn't have start / stop. So is this something that a previous owner has coded out?
2013 E89 28i auto