Charge to 85% - What on earth is going on!!!

[W1NGE]

As the culprit for one of those other threads, I think I can comment in this thread too. And it was SergeyIndy who made me understand enough more about how it works to get success in controlling it again. Just as he descibes in quote above. But I can add an anecdote to it.

For me, it was stopping using recurring timers that "broke it". As long as there was something recurring, i.e. a future instruction, the car did not go to 100. When I turned it off, because my driving needs were not recurring any more, it started going to 100 just the way OP describes.

The key understanding for me is that the car inherently wants to go to 100 (wants is the wrong word, but you understand). It is written clearly in the manual - but who remembers that after a couple of years? But a future instruction for any time keeps it from going. So I have added an active timer for a date next year. Then it always stops at the desired point in the "real" active timer that I modify as desired, to fit both my driving needs and charge with as cheap electricity as I can manage.

Profiles could perhaps make things simpler... or complicated. But I dont use them.

I originally highlighted the recurring timer many pages back (and some years ago on other tedious threads on this topic) but apparently ignored / dismissed - no matter.

Daily recurring is just fine - it only charges if you are connected remember (!) so the fact that you could have it set 7 days per week is entirely irrelevant, there just needs to be a next timer event to force the charging pause.

I charge maybe once or twice in 7 days at home and simply have the daily recurring. 100% reliable. I only connect the car if I want to charge.

What is odd is the profile only method (on J1.1 Taycans) - works for many in USA but not clear how many have had success in UK (or wider Europe for that matter). I tried every permutation and it will always overcharge with a profile only control.

The Owner's guide for MY23 suggests it is entirely possible with a Profile and preferred charging time but for many the reality is a little different unfortunately. The achilles heal in this method is that if you want to make 85% your 'minimum' as the (only) means to set a charge level then charging commences immediately (ignoring the preferred time) as this is the point of a minimum charge.

Other control parameters with a profile are a) Optimised charging option which is intended for use with a HEM (Home Energy Manager) and ideally either the PMCC or PMC+ EVSEs which will draw dual power sources at particular times and prices - solar and grid, and b) Preferred charging period option. These work in tandem when active once the minimum level of charge has been reached (or already at). Logically therefore, any additional charge beyond your minimum will be managed by the Preferred charing period and, if a HEM is in play, Optimised charging will then control multi-energy sources and when prices are advantageous.

Excerpt from MY23 manual:

As an aside, I also switched to OVO Charge Anytime which provides any time of day £0.07p / kW using their own app which integrates well with the Taycan. When using this method of control all My Porsche App / PCM non-OVO generated profiles / timers are disabled / removed. OVO then automatically drop their own profile(s) / timer(s) onto the PCM / My Porsche App to control the charging session.

Life's too short - find something that works and leave it well enough alone.

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[or1]

...

As an aside, I also switched to OVO Charge Anytime which provides any time of day £0.07p / kW using their own app which integrates well with the Taycan. When using this method of control all My Porsche App / PCM non-OVO generated profiles / timers are disabled / removed. OVO then automatically drop their own profile(s) / timer(s) onto the PCM / My Porsche App to control the charging session.

Life's too short - find something that works and leave it well enough alone.

Thanks @W1NGE you have been helpful too. But this OVO info makes me wonder, because my electricity supplier here in Norway, Tibber, says that they are no longer allowed to access Taycans and control charging, because of Porsche policy. UK suppliers may, obviously? Good to know when I press on with Tibber and/or Porsche.

 

[glon]

I originally highlighted the recurring timer many pages back (and some years ago on other tedious threads on this topic) but apparently ignored / dismissed - no matter.

Daily recurring is just fine - it only charges if you are connected remember (!) so the fact that you could have it set 7 days per week is entirely irrelevant, there just needs to be a next timer event to force the charging pause.

Wasn't ignored but didn't make sense until someone else explained this logic about why recurring makes a difference. Sorry if you did explain this in as much details as the person quoted above and I missed it.

 

[eddieterry]

As the culprit for one of those other threads, I think I can comment in this thread too. And it was SergeyIndy who made me understand enough more about how it works to get success in controlling it again. Just as he descibes in quote above. But I can add an anecdote to it.

For me, it was stopping using recurring timers that "broke it". As long as there was something recurring, i.e. a future instruction, the car did not go to 100. When I turned it off, because my driving needs were not recurring any more, it started going to 100 just the way OP describes.

The key understanding for me is that the car inherently wants to go to 100 (wants is the wrong word, but you understand). It is written clearly in the manual - but who remembers that after a couple of years? But a future instruction for any time keeps it from going. So I have added an active timer for a date next year. Then it always stops at the desired point in the "real" active timer that I modify as desired, to fit both my driving needs and charge with as cheap electricity as I can manage.

Profiles could perhaps make things simpler... or complicated. But I dont use them.

I agree but would add that the “As long as there was something recurring, i.e. a future instruction, the car did not go to 100” is why ticking the optimised on just a profile works as once the minimum is reached then it waits for the optimised (future instruction) to take over and so stops.

 

[laua]

Here's my understanding of the logic, or lack thereof;

1. No profile, no timer: charges to 100%
2. Profile with optimized charging, no timer: charges to the profile's minimum
3. Profile with preferred charging period, no timer: charges to the profile's minimum, then charges to 100% within the profile's preferred times
4. Profile with optimized charging and timer: charges to the profile's minimum, then charges to the timer's scheduled maximum just in time
5. Profile with preferred charging period and timer: charges to the profile's minimum, then within the profile's preferred times charges to the timer's scheduled maximum, but not always just in time

More info here;

https://rennlist.com/forums/taycan/1349173-0q-pure-white-journal.html#post18806242

Agree with the above except #2 never worked for my MY23 since day 1 - I primarily use #4 or #5. For what it’s worth I use a Tesla Wall Charger - not sure if that impacts the ability to use #2 (maybe it’s not compatible with Porsches optimised charging?)

 

[rb33gl]

I originally highlighted the recurring timer many pages back (and some years ago on other tedious threads on this topic) but apparently ignored / dismissed - no matter.

Daily recurring is just fine - it only charges if you are connected remember (!) so the fact that you could have it set 7 days per week is entirely irrelevant, there just needs to be a next timer event to force the charging pause.

I charge maybe once or twice in 7 days at home and simply have the daily recurring. 100% reliable. I only connect the car if I want to charge.

What is odd is the profile only method (on J1.1 Taycans) - works for many in USA but not clear how many have had success in UK (or wider Europe for that matter). I tried every permutation and it will always overcharge with a profile only control.

The Owner's guide for MY23 suggests it is entirely possible with a Profile and preferred charging time but for many the reality is a little different unfortunately. The achilles heal in this method is that if you want to make 85% your 'minimum' as the (only) means to set a charge level then charging commences immediately (ignoring the preferred time) as this is the point of a minimum charge.

Other control parameters with a profile are a) Optimised charging option which is intended for use with a HEM (Home Energy Manager) and ideally either the PMCC or PMC+ EVSEs which will draw dual power sources at particular times and prices - solar and grid, and b) Preferred charging period option. These work in tandem when active once the minimum level of charge has been reached (or already at). Logically therefore, any additional charge beyond your minimum will be managed by the Preferred charing period and, if a HEM is in play, Optimised charging will then control multi-energy sources and when prices are advantageous.

Excerpt from MY23 manual:

As an aside, I also switched to OVO Charge Anytime which provides any time of day £0.07p / kW using their own app which integrates well with the Taycan. When using this method of control all My Porsche App / PCM non-OVO generated profiles / timers are disabled / removed. OVO then automatically drop their own profile(s) / timer(s) onto the PCM / My Porsche App to control the charging session.

Life's too short - find something that works and leave it well enough alone.

This is exactly what I do with Octopus Intelligent Go. I control how much charge I want (usually 85%) and when I want it charged by in the Octopus App and it does just that. All timers & profiles on the car are disabled.

 

[bxwatso]

Is your profile enabled? Easier to do it from the mobile app.
Should look like this.

* I see you said timer. Profile needs to be set first.

this is most likely the issue, in my experience.
the charging settings are particularly German.

 

[skibidi]

I have the same issue @glon. My car was in for an A/C charging issue. They fixed and serviced it. During the service they updated the software. Since then my AC charging has been going to 100% ignoring my profiles and timers that all worked before hand. Like you, I’ve (daily repeating) timers set to charge to 85%, ready for departure at 6:45am. My profile is location independent, with a min charge of 25%with a preferred charging period of 2-5am.

I called service and what I was told.. but have yet to see if it works.

Go to Navigation, click the 3 dots, go to Charge Planning, Go to Set min. Charge at destination manually, move the slider up to 80% which apparently resets things.

I’ve to confirm myself if this works but thought I’d share as it’s different to everything posted here. I won’t be charging myself tonight as I still have 96% charge?

 

[GHamilton]

I’ve had zero problem for 18 months and all of a sudden it’s charging to 100% regardless of my settings. No recent SW update. I’ll try the suggestion in last post and let you know in a week.

 

[cj_lf]

You also need to make sure "Direct charging" is turned off in the app on your phone. If it's turned on the car will charge to 100%.

 

[GHamilton]

You also need to make sure "Direct charging" is turned off in the app on your phone. If it's turned on the car will charge to 100%.

Yup, first thing I checked, and that’s not it

 

[d00d]

Yes, but to add to #5, it will also charge outside of the preferred times if needed.

Like if the timer's scheduled maximum is that day after the profile's preferred times, it will charge during those times then complete after, or something else?

 

[d00d]

As I’ve said a few times now on this thread, Number 2 definitely doesn’t work anymore for me.

it used to, it would charge to the minimum set, send a push alert saying ‘The charging process is complete’ and not charge any further than the ‘minimum’ set. Now, possibly since the recall software update the car received last month, it just keeps charging to 100%. Hence the thread.

I've had the WPN9 PCM update since last May, is that the one you're referring to?

Agree with the above except #2 never worked for my MY23 since day 1 - I primarily use #4 or #5. For what it’s worth I use a Tesla Wall Charger - not sure if that impacts the ability to use #2 (maybe it’s not compatible with Porsches optimised charging?)

Same here, have a '23 and use Tesla J1772 Wall Connector (or ChargePoint Home Flex) and use 4.
Today I tested 2. with disabled timers and 80% profile, it stopped at 80% and didn't start up again.
Then tested 2. with deleted timers and 85%, also stopped.

 

[GHamilton]

I’ve had zero problem for 18 months and all of a sudden it’s charging to 100% regardless of my settings. No recent SW update. I’ll try the suggestion in last post and let you know in a week.

As a follow up to prior post, I was down to 79% so tried charging on home charger with Timer profile for 85% charging 9p-6a, direct charging off, and it started charging immediately (at 4:15pm) and I shut it down at 86%. This was after deleting app and reinstalling, deleting all other Timer profiles. Can't figure this one out...

 

[moto_geek]

"DIRECT CHARGING" when button is enabled will over ride the app/car settings and DIRECT CHARGING will always charge to 100% when left unattended and ignore the profile settings.

Make sure your big DIRECT CHARGING" button is not blue, should be grey. Then the profiles will be secondary settings when car is plugged in, the active profiles will be activated.

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