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

[Wilco]

I agree, my previous EV was the same even after leaving it for a couple of months.
Should the Macan go onto a sleep mode after a period? If so how long does it wait before doing so?

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[Yves]

Was 3 weeks away and not connected to charger, it hardly dropped 2-3% at the max …

 

[Paris92]

My checks are on the app only. Not in the car.

Update for today. It was at 65% on the app this morning, as it was yesterday. Unlocked car, dash screen shows 65%. Lock car, app still at 65%. So I did not loose any charge last night.

 

[sor]

It seems possible that sometimes these sudden changes are actually just recalibrations of estimated capacity and not actual changes or loss of energy from the battery. It’s rare but occasionally people report the percent actually going up, or even just general confusing variances to percent and or range with little good data in recent history.

There is also the scenario that a car tends to use more energy its first few miles which can sometimes account for “sat idle for a week and no change in percent at all until after I drove a little”.

I’ve never had zero losses in a car after a long vacation, but I’ve never had to worry about parasitic loss in an EV, especially on timelines where I’d be leaving the car at an airport (1-3 weeks). Hopefully the Macan will continue that trend.

 

[ChrisFromUK]

I’ve never had zero losses in a car after a long vacation, but I’ve never had to worry about parasitic loss in an EV, especially on timelines where I’d be leaving the car at an airport (1-3 weeks). Hopefully the Macan will continue that trend.

Certainly my wife's EV does that and we've left it anywhere from 2 to 7 weeks with no loss whatsoever.

My Macan lost 13% when left for 14 days in a car park. what's most annoying is that I then didn't have enough charge to comfortably get to our planned lunch stop on the journey home.

I guess the advice is to know your car. It seems some don't lose any charge when left but quite a lot (including mine) are losing charge for reasons unknown.

 

[dimaa_6abc]

It seems possible that sometimes these sudden changes are actually just recalibrations of estimated capacity and not actual changes or loss of energy from the battery. It’s rare but occasionally people report the percent actually going up, or even just general confusing variances to percent and or range with little good data in recent history.

There is also the scenario that a car tends to use more energy its first few miles which can sometimes account for “sat idle for a week and no change in percent at all until after I drove a little”.

I’ve never had zero losses in a car after a long vacation, but I’ve never had to worry about parasitic loss in an EV, especially on timelines where I’d be leaving the car at an airport (1-3 weeks). Hopefully the Macan will continue that trend.

I did not think along those lines. You might be right. I remember seeing multiple times that it goes too far without dropping even 1%. Maybe now it recalibrated itself and compensated all those magically preserved %. Then it has really weak algorithms or estimating the SoC, other EVs (BMW, Mercedes) estimate it quite well.

My problems were bigger. After a long drive (3800km, 1400+1400, only ultra fast charge, 150kW+, sometimes charger capable of 350kW) it could not reach the target SoC when doing AC charging, instead of 80% in the morning there was 76% or 78%. Sometimes it would hold SoC for too much, like driving 10km and not losing a single %. Sometimes it would lose SoC too quickly when driving, like 1% per 2-3km while it should be 1% per 5km. Once it showed 31->70% during DC fast charge while station showed 30kWh sent to the car. People here recommended charging to 90%+, letting it sit for 12 hours, discharging to 20% and again letting it sit for 12 hours. I did that and most of the issues mentioned above went away, but not the SoC loss during long periods of inactivity. Looks like all those problems are originated from the single root, and the root is some imbalance, either actual or fantom one recognized by the software.

The car has scheduled software update next Friday, will see what it would bring.

 

[ChrisFromUK]

The car has scheduled software update next Friday, will see what it would bring.

Which software update? Is it the big new one we are expecting soon?

 

[chrisk]

I have seen SoC going up several times, e.g. charging stops at 80% and I unplug and next morning SoC is 83%. In all these cases the ambient garage temperature and battery temperature dropped. So probably the change in SoC is due to temperature change.

I have also observed the reverse, stop charging at 80% and the SoC dropping to 78% if the ambient and thus battery temperature increase while parked.

Moreover, as I documented in another thread, SoC, range estimate and DC charging speed were completely messed up after leaving the car parked for 3 weeks. So there is something going on with the BMS software.

I have owned 4 other EVs, including a Taycan, and neither of them had such an erratic behavior as the Macan. In fact, my other EV, a Kia Ev6 was parked together with the Macan during those 3 weeks under exactly the same conditions and it only lost 1%.

 

[JohnnyRoaster]

Unfortunately my car has been sitting for 3 weeks. The good news is it's still at 100%. The bad news is my plates haven't arrived and Massachusetts is about the only state that doesn't recognize temporary plates

 

[CHP]

Certainly my wife's EV does that and we've left it anywhere from 2 to 7 weeks with no loss whatsoever.

My Macan lost 13% when left for 14 days in a car park. what's most annoying is that I then didn't have enough charge to comfortably get to our planned lunch stop on the journey home.

I guess the advice is to know your car. It seems some don't lose any charge when left but quite a lot (including mine) are losing charge for reasons unknown.

That is a lot. Mine is sitting at the dealer for 8 weeks. They charged it to 100% initially and it lost 2% during that time. It's sitting in the workshop and they sometimes open car and windows.

My diesel GLE was eating the 12v while idle. I had no comfort access but car would initiate preconditioning every time I come close with key.

13 kW however is a lot, whereas charging your phone daily for a month would be only around 0.15 kWh, using a gaming computer 24/7 for a month would be 115 kWh. A Snapdragon chip (Qualcomm, used in Porsche) can use up to 0.1kWh (72 kW 24/7 for one month). If your loss is real, frequent activation may indeed be your problem. Not sure how Apple/iWatch app is integrated in the car ecosystem, but app may trigger to wake up entire system.

 

[dimaa_6abc]

Which software update? Is it the big new one we are expecting soon?

I'm not sure, dealer said update will take 2 hours. What is that big update supposed to change? I can tell after the update if it changed that.

 

[Goldtrom]

Without a doubt my car loses around 1kwh/day. It’s not some recalibration. I’ve logged it via my enphase system for months. Still on my list of things to ask the dealer when I eventually bring it in.

 

[CHP]

I'm not sure, dealer said update will take 2 hours. What is that big update supposed to change? I can tell after the update if it changed that.

Nobody knows for sure, you may be the first to know. Some think it will be the software for MY26 thus potentially enabling AI and other features. I don't think remote parking and 3D view will be available as Porsche charges for this (Surround view vs 3D with comfort access).

 

[Fly4ever]

Almost a week ago finally I took delivery of my 4S.Everything went smoothly and the whole thing as an experience was out of this world,almost like living a dream..."Living the dream" as Porsche themself is referring to!

As I was unable to fix a delivery date due to my own personal reasons - in fact I canceled our delivery dates 4 times - the car remained parked in dealership's underground parking fully charged at 100% ready to be delivered at any time.It remained that way for at least 10 days without being charged again until the day I finally managed to go there and get it.It was that day my SA installed the car in my phone app,SoC was still 100%.
Arrived back home with 49% SoC after a 500Km driving and a short fast charging brake (23min 31%--> 85%) and parked the car.The app showed absolutely no discharge several times I checked it every day,staying steady at 49% for the next 7 days.Yesterday,the 7th day,a whole week after the car was parked and remained unused,I took it to the detailer for my PPF installation and some other vinyl foil wrap work on the outside.As I switched the car on and drove for couple of 100s meters the SoC suddenly dropped to 42% with a subsequent drop in range,a whole 7% less than what was indicated for the whole last week.

So,a 1% discharge every day started to happen AFTER the car was paired to my Porsche App.Before that, it was completely stable at 100% for over 10 days.

Maybe that means something...

 

[BigApple]

I actually had my car at the dealer because it did not maintain the 12v battery. They did a software update and now this seems to have fixed it. But now ofcourse the SoC will be impacted by it. Not sure if the update was designed (modified) just for my needs or will be now across the board.
The car was almost 2 months there and they went back and forth with the engineers over there in Germany. Finally my battery no longer goes dead after 3 days of no use. But I must say the drain was because of my BlackVue dashcam. Otherwise my 12v would be fine. Porsche was kind enough to fix this for me.

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