⚡️ Home Charging Issues after Software Update? (Tracking Thread)

[nick729]

I am speculating on the location ban due to the fact that 2 other Macans with the update did not charge at my home, but both of them charge everywhere else. My Macan also charges everywhere else with no issues including with my home chargers installed at a different location.

How close is your neighbour and does he/she also have an updated Macan? Both of my chargers at home charge all other cars, the only car that both chargers and Porsche mobile charger do not charge are the updated Macans.

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[Bauer83]

You said it stopped working randomly last night. Did you have the vehicle updated recently? Like say, last week? If that's the case, I'm assuming your car battery was at a high enough SoC that it didn't need charging right away when you picked up the car from the dealership and only plugged it in this weekend to top up for use this week. That's what happened to me. I had my car's software update done on a Friday, but I didn't need charging and had departure times set for Monday. So I plugged mine in on Saturday evening, but the programmed departure was for Monday morning, so it had paused charging all day Sunday. Come Monday morning, the charging was not done and I noticed the light was red. Ever since then, at home charging has never worked.

Unless an OTA update happened in the background, my car was updated in November during delivery. There has been no further updates so for it to just randomly stop charging at home as of this past Friday it is very odd. I do get what you have going on via direct charging this morning so my workaround failed. One thing I do have the benefit of seeing from my Emporia charger is I am seeing a bit of what is happening.

Car attempts to start charging at 2A, and it appears that eventually it fails.
Car then attempts to start charging at 1A, and it appears that eventually it fails.
Car then attempts to start charging at 0.5A and it appears that it eventually it fails.

One thing I just tried was limiting it to 5A in my emporia charger, and it eventually started to charge on what appears to be step two of the handshake (where as before this Friday I feel it started to go green near immediately). Following that I am able to flex it up to 40A, I can see that the car then tries to re-handshake down to 0.5A but stays connected and then ramps up to 39A. I say the car, as the Emporia apps shows both what the max charge rate is but what the vehicle is requesting.

 

[lukine]

Thanks @annwills Hopefully, Porsche will address this in the next update. I'm pretty certain, the car shouldn't be deciding when to charge when I plug it in rather it should start charging when the charging window I've set starts (7pm-6am). Why does the location setting even matter unless they determine Electricity Time of Use based on your location (which is not what it's doing). Our Tesla used our local Electricity TOU to set charging schedules. My lightning does the same thing.

Maybe I am not understanding this fully but I am going from experience of owning 3 EVs and 2 of which work as intended in laymen form. Porsche is complicating the charging process IMO.

The reason for this is to prevent battery degradation. Keeping the car idle with a high SoC is typically not recommended. So this way it optimizes battery longevity. However, before I had charging problems, I noticed that my car actually didn't wait. It actually started charging and finished hours before my set departure time. But maybe it has something to do with the target SoC you set. Since I always keep mine at 60% target, it's not high enough for the computer to think it will affect battery life, so it just charges it up to 60% as soon as it's allowed to. I didn't test this theory though, and since I can't even charge at home, I'll have to wait longer before I can test it.

Are you in contact with Porsche NA? Service rep got back to me right away but it will involve a large hike to the dealer with my mobile charger which I am almost 90% sure will just work fine based on my other experiences using both L2/L3 chargers around town, but does nothing to solve my sudden issue w/ charging at home.

I think the infrastructure at dealerships may have a lower voltage so it's possible it won't have any problems charging there. My dealership in particular was charging at 220v, so my car had no problems charging with my mobile charger. I suspect it's going to be the same for you.

I am speculating on the location ban due to the fact that 2 other Macans with the update did not charge at my home, but both of them charge everywhere else. My Macan also charges everywhere else with no issues including with my home chargers installed at a different location.

How close is your neighbour and does he/she also have an updated Macan? Both of my chargers at home charge all other cars, the only car that both chargers and Porsche mobile charger do not charge are the updated Macans.

My Macan charges at my friend's homes. They're 1.5hrs away from me though. But my Macan didn't charge at my neighbour's house, who is about 6 houses away from me. Same neighbourhood though. However, her Taycan and Tesla X charged at my house immediately without any issues. If you have a neighbour that has an EV and is willing to allow you to test charging your car at their house, you should try it. I suspect it won't work though.

Unless an OTA update happened in the background, my car was updated in November during delivery. There has been no further updates so for it to just randomly stop charging at home as of this past Friday it is very odd. I do get what you have going on via direct charging this morning so my workaround failed. One thing I do have the benefit of seeing from my Emporia charger is I am seeing a bit of what is happening.

Car attempts to start charging at 2A, and it appears that eventually it fails.
Car then attempts to start charging at 1A, and it appears that eventually it fails.
Car then attempts to start charging at 0.5A and it appears that it eventually it fails.

One thing I just tried was limiting it to 5A in my emporia charger, and it eventually started to charge on what appears to be stepped two of the handshake (where as before this Friday I feel it started to go green near immediately). Following that I am able to flex it up to 40A, I can see that the car then tries to re-handshake down to 0.5A but stays connected and then ramps up to 40A. I say the car, as the Emporia apps shows both what the max charge rate is but what the vehicle is requesting.

My grizzl-e has a manual dip switch that can limit the max amp it uses. But that requires opening up the charger to do so. That's the only thing I haven't tried.

 

[stickyfingers]

The reason for this is to prevent battery degradation. Keeping the car idle with a high SoC is typically not recommended. So this way it optimizes battery longevity. However, before I had charging problems, I noticed that my car actually didn't wait. It actually started charging and finished hours before my set departure time. But maybe it has something to do with the target SoC you set. Since I always keep mine at 60% target, it's not high enough for the computer to think it will affect battery life, so it just charges it up to 60% as soon as it's allowed to. I didn't test this theory though, and since I can't even charge at home, I'll have to wait longer before I can test it.


I think the infrastructure at dealerships may have a lower voltage so it's possible it won't have any problems charging there. My dealership in particular was charging at 220v, so my car had no problems charging with my mobile charger. I suspect it's going to be the same for you.


My Macan charges at my friend's homes. They're 1.5hrs away from me though. But my Macan didn't charge at my neighbour's house, who is about 6 houses away from me. Same neighbourhood though. However, her Taycan and Tesla X charged at my house immediately without any issues. If you have a neighbour that has an EV and is willing to allow you to test charging your car at their house, you should try it. I suspect it won't work though.


My grizzl-e has a manual dip switch that can limit the max amp it uses. But that requires opening up the charger to do so. That's the only thing I haven't tried.

Thanks. FYI - the target is usually set to 80% (99% of the time). We do a one-time 100% charge only when we know there is a lot of driving happening that day. It's rare but my wife left the charge rate to 100% for 2 weeks without noticing. It's a lease so for us. I wonder if the algorithm in the app/car determined abuse of charge (would be absurd if that was the case) so it won't let me charge at home - I doubt it but it did cross my mind.

80% is what the manual and the app suggests when adjusting the charge rate. And, for the past 2 EVs, it's always 80% most of the time.

The amp selection gives me a thought. I have an AmpRoad EV mobile charger that has selectable amperage charging (10a - 40amps). Will give that a try if the car goes back to the "Charging Pause" issue tonight.

 

[Bauer83]

I think the infrastructure at dealerships may have a lower voltage so it's possible it won't have any problems charging there. My dealership in particular was charging at 220v, so my car had no problems charging with my mobile charger. I suspect it's going to be the same for you.

Do you know the voltage on your home charger by chance? I am looking to see through the Emporia app whether there is any trends in voltage that could explain things on my end.

 

[stickyfingers]

Do you know the voltage on your home charger by chance? I am looking to see through the Emporia app whether there is any trends in voltage that could explain things on my end.

My Emporia app shows avg of 243.4V on the EV charger outlet.

 

[Bauer83]

My Emporia app shows avg of 243.4V on the EV charger outlet.

I have my Emporia Vue tied to the feeder and not the individual outlet, but appears to be about 248-249V when not charging, and a drop to around 242-244 when charging from what I can see. One question for you - are you using an Emporia Charger? I would say this might be an issue if it wasn't for other chargers tried at my house not working, but just curious.

 

[stickyfingers]

I have my Emporia Vue tied to the feeder and not the individual outlet, but appears to be about 248-249V when not charging, and a drop to around 242-244 when charging from what I can see. One question for you - are you using an Emporia Charger? I would say this might be an issue if it wasn't for other chargers tried at my house not working, but just curious.

I have an Emporia Vue with individual sensors all over my main panel. I have a specific emporia sensor for the EV panel. I have 3 chargers - F-150 Lightning Ford Charge Station Pro (80-amp), the Porsche Mobile Charge (used with the Macan) and an AmpRoad mobile that I take camping because it allows me to throttle down to 30-amps so I can use the outlets at campgrounds.

 

[stickyfingers]

My wife plugged her vehicle at her parents place using an Autel charger and right away, it started charging to her desired charge setting. Going to see if it behaves normally when she gets home tomorrow. So it could be a location issue.

Someone posted on Reddit that they took their vehicle to the dealership in the US (don't recall the state) and the dealer confirmed it was a software issue with no fix from Porsche as of yet. Fingers crossed that there is an update coming sooner rather than later.

This was also posted: A November software update WSJ0 breaks AC charging on Macan EVs at least in the Chicagoland area.

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