[32-BOY]

Hi guys new to the forum bought a E92 330d the other day and the battery is dead, when i was buying it the seller said that its probably on its way out, didn't think much about it until i looked in to replacing it and realised it sa bit of a pain. So form what i understand after reading numerous amount of posts on many different forums that the battery need to be coded.

But i realised that my car does not have the IBS sensor...but the batter is AGM as it has the little window on top? So what sort of battery do i need AGM or just normal? Also do i need to code the battery in or can i just register it? I have attached a photo of my actual battery any help would be great as at the moment car is sitting on my drive.

Cheers

[KM79]

That's a non AGM battery pal,and the need to be registered when replaced.But to be honest I've changed batteries in the past without registering and it's made no odds to the car.

[MightyMouseTech]

That is not an AGM battery. AGM is black. Coding/registering is not much difference, and yes, you need to.

[un1eash]

There must be someone nearby with Carly that can register a new battery for you.

[Aragorn30d]

If you replace it with the same size you shouldnt need to do anything.

Non-IBS cars dont need the battery registered.

Coding tells the car your battery size, and so doesnt need adjusted if you fit the same one.
Registration tells the IBS system that the battery has been replaced, so without IBS theres nothing to register.

[JackHerring]

Just had mine replaced on my E92, gave the garage my registration plate, they found the battery, quick swap and coded with Carly about 5 miles later.. Not sure if it makes a difference or not coding the battery, but it worked without coding either way.

[RajB]

non AGM battery still needs registering as mine did (2006 335i) as it alters the charging as the system then knows it's a new battery so cycles in a slightly different way.

[Aragorn30d]

Originally Posted by RajB

non AGM battery still needs registering as mine did (2006 335i) as it alters the charging as the system then knows it's a new battery so cycles in a slightly different way.

Only if you have IBS.

Without IBS, it doesnt alter anything, because its the IBS system that does the altering.

[KM79]

Originally Posted by Aragorn30d

Only if you have IBS.

Without IBS, it doesnt alter anything, because its the IBS system that does the altering.

Bmw Ista has a battery registration service function which does work on cars without an intelligent battery sensor.

[mob17]

Whats IBS and how do you know you've got it?

Also i assume its better to go up to a higher amp battery (still bmw battery)?

[Aragorn30d]

A number of other forum posts state that running the battery registration on cars without IBS will fail.

Its also mentioned in TIS that batterys only need to be registered on cars with IBS.

IBS is the part that records the battery condition and alters charging to suit. As such the IBS needs told you've fitted a new battery If theres no IBS theres nothing to reset.

[Aragorn30d]

Originally Posted by mob17

Whats IBS and how do you know you've got it?

Also i assume its better to go up to a higher amp battery (still bmw battery)?

IBS is Intelligent Battery Sensor. Its a sensor attached to the battery lead (look for a blue plug) which reports battery health to the DME.

[KM79]

Originally Posted by Aragorn30d

A number of other forum posts state that running the battery registration on cars without IBS will fail.

Its also mentioned in TIS that batterys only need to be registered on cars with IBS.

IBS is the part that records the battery condition and alters charging to suit. As such the IBS needs told you've fitted a new battery If theres no IBS theres nothing to reset.

It certainly doesn't fail,I know this first hand.Did a customers 2006 330i the other day.Regardless of having an ibs the dme/dde still has a charging map based on which type of battery it's told is fitted.Cars without ibs can still be programmed to accept different batteries and can have the charging map reset via 'register battery replacement'.This function goes back to 2002 7 series non AGM batteries.

[32-BOY]

Thanks for quick replies.

Ended up getting a replacement battery fitted it and it all works perfect, i will try to get it registered soon with CARLY as i have the OBD adapter.

Thanks