Charged battery, do I need coding?

[Arcade.Eyes]

Hey all,

The car has been garaged for the winter and I went to get it out this morning. Of course the battery was dead.

Got it on a trickle charger for a few hours and some life back in the car, not enough to turn the engine over, lights, alarm, dashboard back on.

As the car tries to turn over I can see that all my settings have gone, the dashboard lights flicker on and off. Do I need to get the battery recoded? It was new about a year ago. Or do I just need to get more charge into the battery.

Cheers
Eyes

 

[Anonymous]

No re-coding required...however given you flattened the battery it’s likely that

The battery may not last long

It won’t take a full charge

As a result of these it may continue to throw both spurious and transient faults

May cause a permanent fault in the rear e brake

 

[Arcade.Eyes]

Yeah a fault in the ebrake was why it was changed about a year ago.

 

[Anonymous]

Frankly, IMHO, given the amount of people we see here with so many faults arising from knackered batteries I’d humbly suggest you get a new one..that will require registration not coding if it is the same size

 

[Dialy]

hi all, can somebody please clarify the difference between registering a new battery and coding one , am I being thick?

 

[Christopher72]

hi all, can somebody please clarify the difference between registering a new battery and coding one , am I being thick?

Same thing. Essentially you have to tell the car that it's a new AGM battery and change any of the attributes if it's not the same for the new battery. The car is smart enough to adjust output/input based on battery age and decreasing capabilities.

 

[B21]

hi all, can somebody please clarify the difference between registering a new battery and coding one , am I being thick?

Same thing. Essentially you have to tell the car that it's a new AGM battery and change any of the attributes if it's not the same for the new battery. The car is smart enough to adjust output/input based on battery age and decreasing capabilities.

Incorrect….

Two completely seperate items..

Coding tells the car what size battery you have ..for E89s 70ah or 80ah…

Registration is telling the car that a new battery of the same size has been fitted…

So moving from old 70ah to new 70ah…registration

Moving from 70ah to 80 ah…coding AND registration…

Simples…

 

[Dialy]

Thank you ,am beginning to understand

 

[Christopher72]

Yikes -- I stand corrected then. :telloff:

I'd still check the settings on registering a new battery just in case the previous owner didn't do so correctly, even if you buy the same exact battery. Same tool.

 

[B21]

Regard registration as a reset….the system accumulates a detailed history of the charging and discharging of the battery..it then uses that to determine future charging strategies and how far it can allow systems to drain the battery before intervention…. :tumbleweed:

You can reset it several times ..although if it’s done properly then it’s only once per battery change..

 

[jamesgarbett]

And how does one go about this registration and/or coding?

 

[B21]

And how does one go about this registration and/or coding?

With a suitable coding device …OE tools, or Foxwell or some coding apps…

 

[RobbiZ4]

Regard registration as a reset….the system accumulates a detailed history of the charging and discharging of the battery..it then uses that to determine future charging strategies and how far it can allow systems to drain the battery before intervention…. :tumbleweed:

You can reset it several times ..although if it’s done properly then it’s only once per battery change..

Absolutely correct!

If NOT re-registered after a renewal, ONLY the proposal of the next renewal (a message on the dash) is calculated a bit too early. Not a problem at all and really no risk of damaging anything!

 

[B21]

Regard registration as a reset….the system accumulates a detailed history of the charging and discharging of the battery..it then uses that to determine future charging strategies and how far it can allow systems to drain the battery before intervention…. :tumbleweed:

You can reset it several times ..although if it’s done properly then it’s only once per battery change..

Absolutely correct!

If NOT re-registered after a renewal, ONLY the proposal of the next renewal (a message on the dash) is calculated a bit too early. Not a problem at all and really no risk of damaging anything!

Phew!

I’m glad that the supreme commander of Zed electronics agrees with me :rofl:

 

[RobbiZ4]

I’m glad that the supreme commander of Zed electronics agrees with me :rofl:

Well, I was thinking about where you could have copied this exact summary from one of my former posts. :rofl:

But without a joke, it's important to post this correct description as there are so many wrong myth's around in the web regarding the registration topic.

The most affected system of an incorrect statistic (aka registration) is the start-stop-system, that may not stop and restart the motor with a weak battery on each stop.

Luckily in my Z4 such a gimmick is not mounted.

 

[B21]

Start-stop..work of the devil… :thumbsdown: