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I did not know a scan was required for a battery swap.
Allegedly Porsche's have to know the new battery is at 100% and the coding of the eco needs changing after install (or something like that) do the charging system adjust for the new 100% battery..
BUT, every video I've watched so far on YouTube, nobody is doing it.
Some say if you use the CTEK and keep it plugged in while swapping, that it'll keep you memory settings AND keep from having to be recoded... Not sure that makes sense as to NOT changing the charging system to know it's a new battery.
My wife's 2017 AMG has a smart alternator that waits for you to back off the throttle before it charges the battery. View it as a makeshift hybrid system. Of course, on long freeway drives without slow downs, the alternator may need to kick in. It's all computer controlled.
According to the engineers, a new battery gets treated differently than an older battery. To maximize efficiencies, a new battery must be declared to the computers in the car.
I accidently let her battery drain a few times during Covid. Eventually, I had to replace the original battery but I did not do the MB handshake. That battery failed a year later and was replaced at my local auto parts store at no charge. Their tester indicated internal failure. Because I didn't do the handshake? Maybe.
The next battery also didn't get the handshake. Does this matter? Occasionally, it drains quickly while the car sits. Maybe that's because something isn't shutting down properly? The MB GLA Forum has reported this overnight drain problem a few times. Will this third battery fail soon? Time will tell, maybe.
I am looking into putting an Anti Gravity battery in there so she can use the remote to access the reserve if necessary. She's more happy with the idea that her car may not start when she needs it.
The registration of a new battery is a must. When you register a new battery a few things must be done through coding:
1. must enter battery type, AGM, lead acid, etc.
2. enter amp hours of battery
3. date installed
The software has an algorithm that determines the charging characteristics based upon the above. If you were to install a new battery without doing the above, it’s likely the battery would be overcharged from the get go, which affect the longevity of the new battery. As a battery ages, the software adjusts the charging output of the alternator to increase the current (amperage ) to the battery to compensate for the battery’s age.
The registration of a new battery is a must. When you register a new battery a few things must be done through coding:
1. must enter battery type, AGM, lead acid, etc.
2. enter amp hours of battery
3. date installed
The software has an algorithm that determines the charging characteristics based upon the above. If you were to install a new battery without doing the above, it’s likely the battery would be overcharged from the get go, which affect the longevity of the new battery. As a battery ages, the software adjusts the charging output of the alternator to increase the current (amperage ) to the battery to compensate for the battery’s age.
This can be done with a piwis 2 or 3.
Well, I was hoping it could be done with my icarsoft Pro scanner... that one thread I posted seems like it should be able to....HOPING!!
i swapped to an antigravity and did no coding, then recently when the car sat alot, it acted starnge so i went back to the stock battery with no issues.
Found a vid with a guy coding a new battery to a Porsche using icarsoft (not quite like mine, but mine does all brands and is a "pro" model, so it should work).
Sorry for another small derail but has anyone changed their own battery and used a "Scanner" to do the initializing of the new battery?
I car just randomly left me stranded tonight and had to get a jump..
I've got an icarsoft Pro Scanner.... I know Porsche charges crazy money to change batteries and I'd like to avoid that if I could.
Paul, I know you have an icarsoft scanner....Can it do the battery "Initialization" ?
BTW....HAPPY THANKSGIVING EVERYONE!!! (Even our Canadian Friends)
Did you put a new battery in it and try it as is ? My 2019 didn't need anything when I installed a different lithium battery. Later, I did use my Autel to tell it was a lithium for the charging profile, but that was overkill.
Did you put a new battery in it and try it as is ? My 2019 didn't need anything when I installed a different lithium battery. Later, I did use my Autel to tell it was a lithium for the charging profile, but that was overkill.
Not yet...Just happened last night and got a Jump to get home.
Just doing research now so I'll know what needs done. Don't want to spend a couple of bills on a new battery and have it Chit the Bed a short time later like some have mentioned it did / could.
Sorry for the derail again folks.... Just like getting y'alls opinion and experiences!
I've replaced plenty of Porsche batteries, but not on my 991 or anything of that generation, so can't say definitively if any of the scanners I have have that function... I will say I'm skeptical that the new battery coding has any demonstrative effect on charging or battery life.
Originally Posted by ltcjmramos
Will Durametric register a new battery?
I doubt it... Durametric is damn near useless on anything 991 gen or newer.
And if you are concerned about battery life, I'll add that Costco offers interstate AGM H8 batteries with a full 36 month warranty (not pro-rated, 100% of original purchase price credited to current purchase price). Not all locations seem to carry them, but I think the tire department can special order it for you. Item number 1624801, about $170. Made in Germany!
11-22-2023, 09:52 PM
