Does your Macan EV keep SoC stable when left idle for a week or longer?

[Petzi]

Because I ordered a new Porsche and want to understand what would/can trigger battery drainage. Also, they never confirmed/specified fault of my car. They just took it back.

porsche macan has no “drainage “
drainage = loss of energy without any legitimate consumption.
when car is sleeping =no consumption.
every imaginable consumption concerns the 12v battery. (after weeks the hv battery will need to recharge the 12 volt battery.)

(some have after market dash cams for example. they drain the 12v batt. the original porsche dashcam is not draining at all)

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[platypus]

@CHP they took it back for this reason? Or did you just do a trade-in?

That’s what worries me a bit about considering a trade-in, it’s not clear that new cars are necessarily immune. Unless the drainage happens only on a specific model year?

 

[platypus]

there is no ”drainage “.
drainage = loss of energy without any legitimate consumption.

I think we’re all using “drainage” as a shortcut to “unintended consumption of the battery when the car is supposed to be asleep” we’re not expecting our cars to be breaking the laws of physics just yet

 

[Petzi]

I think we’re all using “drainage” as a shortcut to “unintended consumption of the battery when the car is supposed to be asleep” we’re not expecting our cars to be breaking the laws of physics just yet

i intended to say that the porsche macan has no drainage. i believe that i managed to prove this, as my car is parked since 12/12 without any loss of soc.

there is only one consumption of the hv battery when the car sleeps. it is the intended and necessary maintenance of the 12v batteries charge.

 

[platypus]

@Petzi got it, my car was like that too for the first 9 months, then it started appearing, possibly after a software update.

 

[Petzi]

@Petzi got it, my car was like that too for the first 9 months, then it started appearing, possibly after a software update.

this should be documented, reported and fixed.

 

[platypus]

@Petzi see my post here

 

[Petzi]

@Petzi see my post here

thats funny and in my opinion bs. ask your pc to give you this in writing.

ps; there has been another software update plus update of the update in november.

 

[CHP]

@CHP they took it back for this reason? Or did you just do a trade-in?

That’s what worries me a bit about considering a trade-in, it’s not clear that new cars are necessarily immune. Unless the drainage happens only on a specific model year?

No, I had drive system failures in my last right from the start . They blamed it on the tracker, but this theory turned out wrong so they took car back. Both Macan developed significant problems after charging at faulty Porsche charger. Power surge alone would have left many Porsche stranded so I assumed multifactorial cause. That's all I know.

 

[CHP]

this should be documented, reported and fixed.

Absolutely, but here lies the problem. Like you we all assumed that documenting and reporting clear faults would result in fixing the problem. Drive system errors like in my case are pretty straight forward to deal with, not so much for other faults. It's so much easier with the help of others here in the forum (you as standard reference for normal for example) to object standard answers like within normal limits or part of Porsche experience.

 

[platypus]

thats funny and in my opinion bs. ask your pc to give you this in writing.

ps; there has been another software update plus update of the update in november.

They did, I have a report of the visit that says Porsche considers this to be within normal range. It’s not, but legally it is. Re: software updates, my car is up-to-date, the dealership performed all the updates before working on the drain issue.

 

[platypus]

It's so much easier with the help of others here in the forum (you as standard reference for normal for example) to object standard answers like within normal limits or part of Porsche experience.

Exactly, so far I haven’t managed to have Porsche replace any parts, but seeing this thread confirmed there was something off that Porsche couldn’t eventually ignore. I’m going to bring the car again, especially now that I also have the slow DC charging issue.

 

[sor]

I think there is at least in some cases confusion between battery rebalancing and drainage. I am certain (based on math) that when I charged my car to 85% earlier in the month and it dropped to 75% overnight that no, it didn’t somehow manage to consume 9kw of energy sitting idle overnight. Instead it was rebalancing the cells and made more “room” for charge. This was accompanied by an increase in total range as well after topping it back up - the new 85% had more range than the previous 85%.

 

[platypus]

@sor agreed, in my case the drainage has been 1% consistent every day, and the dealership observed it as well. The rebalancing could also happen on top, because I’ve also recently seen the big changes of SoC.

 

[Petzi]

I think there is at least in some cases confusion between battery rebalancing and drainage. I am certain (based on math) that when I charged my car to 85% earlier in the month and it dropped to 75% overnight that no, it didn’t somehow manage to consume 9kw of energy sitting idle overnight. Instead it was rebalancing the cells and made more “room” for charge. This was accompanied by an increase in total range as well after topping it back up - the new 85% had more range than the previous 85%.

im just replying to highlite your post.

you are absolutely right. all his “observations “ have nothing to do with science.

fact is that it is not “normal” or “within normal range” for the hv battery to somehow drain 1kw / day without any reason. it just not possible. so either it is the effect that you describe (which should not occur every day) or a very serious malfunction.

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