Don't you also need to reset the charging system/register a new battery in the ECU on these when you replace them?
Not if its like for like, im told. I'll cross that bridge when i get to it.
My understanding (from the e65) is that the system learns to change the charging profile with age on the battery, and will overcharge a new battery unless it is reset. (its called IBS, intelligent battery sensor)
Its the same on the e92, according to my google fu.
The type of battery is irrelevant i was told.
Battery company said it doesn't but ill look into it. All sorted now, managed to pop the boot with the steps from Video.
I don't understand this at all, how did cars manage up until the late 2000's?
Registering batteries? Intelligent battery sensors? What? Load of cobblers. Just making stuff more complicated, for what purpose?
I believe it is designed to keep the battery alive for a lot longer, as they cars demand a lot more from a battery now than they used to. Hence tailoring the charging to ensure the battery is not overcharged, and protected from hitting low voltages when its under heavy load, and damaging the cells.
Its a module on the negative battery lead I think on most cars.
I suppose it can be coded out.
As with most of these things, its just a sign of the times, with more delicate electronics, and higher drains. BMW were likely anticipating this on later models also. I mean a car now has injectors, complex ECU, many different control modules, heated seats, stop start/hybrid charging, etc. Its not just spinning a starter motor occasionally, a fan for the interior and some lights any more
Yeah, just hook up a jump lead from your new battery to a small screwdriver or something metal that fits in the hole and tap it together. I would probably put the negative lead onto the car on a metal nut or something under the bonnet.Oh wow, that video is great, thanks very much, easy to follow. Ive managed to get the plug out and i can see the wire i need. Now iam crap with electrics and its not 100% clear in the video. The guy says using a 12v source, so i can use the new car battery ive got? So i just need to send the positive from the battery to the wire in the plug and the negative just needs to be ground to the seat bolt bracket etc?
I believe that it would only really need registering if it is a stop/start car with an AGM battery to ensure the best charging profile. Like for like should be a non issue either way.Not if its like for like, im told. I'll cross that bridge when i get to it.
I believe that it would only really need registering if it is a stop/start car with an AGM battery to ensure the best charging profile. Like for like should be a non issue either way.