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You’re aware they’re incentivized to have you buy one of their cars, right? 😛 Also, they can’t have already forgotten how many issues the first Taycans had. When I talked to a salesman after I first got issues with my Macan EV, he had hard time hiding that I was not the only one. He said a...

I’m wondering if we should start a shared Google spreadsheet with standardized data recording the daily battery drain issue across this forum. If we have a consistent pattern across enough cars that we can share with Porsche, they may start caring a little bit more. Thoughts?

Yeah, I took a look today, lemon law doesn’t look at all like an easy process, I’m not there yet. I’m bringing the car back to the dealer next week, let’s see if the slow DC charging issue changes anything. I also contacted Porsche on the side, but I’m not super hopeful they’ll do anything.

Thanks! I think I’m going to ask the dealer to run and document these tests, I don’t have that kind of time (at least for now) 😄

I’ve been curious about this indeed. I’ll research the best way to bring it up to the dealer.

If you know someone at Porsche that could bump up the priority of this issue, don’t hesitate 😛

I asked Claude too, and my guess at this point (which is not worth much) is on something like an ECU failing to update and trying indefinitely, as @pm4s suggested earlier, or something else software-related that prevents the car from going to sleep.

@Petzi I think you’re right to push on this, because indeed it would be good to see what Porsche considers normal in their own documentation. I looked at the visit receipt again and it actually doesn’t specify anything (my bad, sorry), so since I’m going to bring it back, I’ll ask them to...

@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.

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.

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.

@Petzi see my post here

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

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 😛

@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?

@krissrock it’s really not what’s happening here I think: one day the car started losing 1% battery, and I didn’t change the way I was using the car or the app before/after. I’d also argue that if checking the app once a day drained the battery by 1%, (we’re talking ~1kWh here), Porsche should...

@ChrisFromUK does it keep losing SoC after this initial drop? In my case there are definitely two things (correlated or not) going on between the consistent battery drain and the unreliable SoC because of the (apparently) unbalanced cells.

@rcomeau good point, indeed the app now tells you how long ago it got data from the car when you’re looking at the SoC, I assume because people believed before (for good reasons) that refreshing the app would sync data with the car.

👀 When the car was idle for two weeks this summer, I didn’t check the SoC even once, so it’s definitely not that.

Good to know. I’m at 11% but since I have another issue where the battery is dropping 1% per day, I’ll soon be below 10% 🙃