Charging doesn't stop to the 80% limit set.

[lory995]

Hi everybody,
Just a quick question, as per title : After setting your profile ( min charge 25% ) and timer ( max charge 80% ) does your taycan keep charging?
I found out mine did it multiple times. This morning too i found it at 92% instead of the 80 i set.
After it did the first time i searched online and checked thoroughly my profile and timer settings but it doesn't seems like there is a problem there.
Is it normal? Do i need to contact my dealer?

Thank you in advance

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[anonymouse]

The usual way, assuming yours is a J.1 Taycan, is to set
- a timer that tells it to stop at 85% at say 0400
- AND a profile that tells it to start charging to say 85%
- BUT NOT a destination left in the satnav (because then it says “I will charge enroute so don’t need to bother tonight”)

That combination should work.

(I found it does sometimes sleep through its alarm clock, especially if you want the car preheated at a specific time. There seems no particular pattern as to when timers fail.)

Thankfully in the J1.2 they ditched all this terrible user interface design and just gave us a slider to set the target charge. They could have copied this from any Tesla since the very beginning but obviously German engineers are more clever.

 

[BigBob]

It's certainly been mentioned on here before. Ive noticed it happening more when the car has been plugged in for more than one day - ie charges to set amount, then fills right up on the second day. However, this has been associated predominantly when using a smart charging controlled by my electricity provider.

I'd try this before going to the dealer:
Check you're EVSE doesn't have some sort of of profile of its own set up - especially if you're using an off-peak tariff type thing
Delete / de-select the profile you're using.
Delete all other profiles or timers you have set up.
Then do the engineers reboot (3 fingers in the corner of the screen) of the pcm.
Then set up your general profile again.

Hope it works. If you're dealer's anything like mine they'll just keep the car for 2 days and say they can't replicate it as they only have dc chargers.

 

[pteron]

I found that you can either set a time slot OR set a target charge. So if you have a profile that says for example "charge between 1am and 6am" it will do that, no matter what state of charge it reaches. To get it to stop at a given target you must set the profile to be "optimised charging" and the target charge in a timer.

 

[Graluy]

Bonjour à tous,
Juste une question rapide, comme indiqué dans le titre : après avoir défini votre profil (charge minimale 25 %) et votre minuterie (charge maximale 80 %), votre taycan continue-t-il de se charger ?
J'ai découvert que le mien l'avait fait, plusieurs fois ce matin aussi, je l'ai trouvé à 92% au lieu des 80 que j'avais définis.
Après l'avoir fait la première fois, j'ai cherché en ligne et vérifié minutieusement mon profil et les paramètres de ma minuterie, mais il ne semble pas y avoir de problème à ce niveau.
Est-ce normal ? Dois-je contacter mon revendeur ?

Merci d'avance
[/CITATION]
Bonjour

Si vous laissez connecté votre taycan plus de 30 minutes après que le niveau de recharge programmé soit atteint, la voiture relance sa charge jusqu'à 100% sauf si vous la débranchez avant

 

[lory995]

The usual way, assuming yours is a J.1 Taycan, is to set
- a timer that tells it to stop at 85% at say 0400
- AND a profile that tells it to start charging to say 85%
- BUT NOT a destination left in the satnav (because then it says “I will charge enroute so don’t need to bother tonight”)

That combination should work.

(I found it does sometimes sleep through its alarm clock, especially if you want the car preheated at a specific time. There seems no particular pattern as to when timers fail.)

Thankfully in the J1.2 they ditched all this terrible user interface design and just gave us a slider to set the target charge. They could have copied this from any Tesla since the very beginning but obviously German engineers are more clever.

Sorry but i don't completely understand.. I set it up a couple weeks ago but for what i remember: with the profile you can only set a minimum charge that the car will reach ignoring the timer, so it starts when you plug it in and stops when 25% ( or other % chosen ) is reached and then will check with the timer ( is this a good time to charge? yes / no ) if yes it will keep charging, if not it will stop until the time set is reached.

So when you write " a profile that tells it to start charging to 85% " it collides with my understanding of profiles. Is my comprehension wrong or did you mix it up?

 

[lory995]

It's certainly been mentioned on here before. Ive noticed it happening more when the car has been plugged in for more than one day - ie charges to set amount, then fills right up on the second day. However, this has been associated predominantly when using a smart charging controlled by my electricity provider.

I'd try this before going to the dealer:
Check you're EVSE doesn't have some sort of of profile of its own set up - especially if you're using an off-peak tariff type thing
Delete / de-select the profile you're using.
Delete all other profiles or timers you have set up.
Then do the engineers reboot (3 fingers in the corner of the screen) of the pcm.
Then set up your general profile again.

Hope it works. If you're dealer's anything like mine they'll just keep the car for 2 days and say they can't replicate it as they only have dc chargers.

Unfortunately (?) i don't have a wallbox or other type of smart charging, just the dumb Mobile Charger Connect so that can't be the problem. I will try your method for sure and even if it works i sure hope it's not gonna be a routine i need to set since it often happens to stay in charge for 2-3 days straight.... i don't wanna check it every day to see if it does what it should!

P.S: my dealer it's exactly like that. already tested. One things i hate from porsche is that it's all " don't worry about nothing, when you have a problem just take it to the dealer, they are gonna solve it for you don't need to think about it " Except the fact that they seem to know less about the car than i do, and even less desire to look for solutions about unexpected and weird problems = lots and lots of time wasted.

 

[lory995]

I found that you can either set a time slot OR set a target charge. So if you have a profile that says for example "charge between 1am and 6am" it will do that, no matter what state of charge it reaches. To get it to stop at a given target you must set the profile to be "optimised charging" and the target charge in a timer.

I will try this before everything else. I reread the manual and it seems to hint at this under one of the optimized charging sections. ( Given i understood the 2 pages of german-engineer-tangled concepts correctly )

 

[lory995]

@Graluy
That reinforces the idea of @pteron.... if not it would be the dumbest thing ever made. ever.

 

[tycanmt]

Some day this will be a case study in human-machine interface class. It's hard to imagine anything more screwed up than a car where it's important not to charge above 80% but nobody can figure out how to tell it to do that.

 

[Tucson_Jim]

My J1.1 has started behaving this way the last two times I did a time slot charge to 85%. Went right past 85% to 100%. No change to profile or timers, but several 3rd party charging sessions while on the road. Just another mystery to deconstruct... but dang, the car is fun to drive.

 

[lory995]

Some day this will be a case study in human-machine interface class. It's hard to imagine anything more screwed up than a car where it's important not to charge above 80% but nobody can figure out how to tell it to do that.

That’s exactly what makes me angry when i think about it. It should be set to do it as standard out of the box and only if you need to have some extravagant need you have to look for it, but no. Germans knows better.

 

[800v]

Some day this will be a case study in human-machine interface class. It's hard to imagine anything more screwed up than a car where it's important not to charge above 80% but nobody can figure out how to tell it to do that.

This^

For future readers, the easiest way to charge to 80% max is to:

1. Have no timer set

2. Set the general profile to 80÷ "minimum" charge, location independent, and use the option optimised charging. This will charge up to 80% max, starting when you plug in. It will still charge to 100% at fast charge stations or if you click "direct charging" when charging.

note 1: Why does this work? The optimised charging setting will communicate with a "smart" charger to only charge during certain times. Since 99% of all EVSE home chargers are "dumb" this will only charge to the 80% "minimum" and then stop (as the charger will never give any "charge" commands).

note 2: If you still like to only charge during certain times of the day, then, in my opinion, it is easiest to set up a time schedule on your home charger instead (that is, if your charger supports that). This will still respect the 80% max set in the profile, and the car just only gets electricity during the time schedule set on the charger (effectively, it becomes just a fancy electricity switch). I use this charger for example.

 

[Dee]

The usual way, assuming yours is a J.1 Taycan, is to set
- a timer that tells it to stop at 85% at say 0400
- AND a profile that tells it to start charging to say 85%

That's just completely wrong.
That doesn't make any sense.
This way it starts to charge to 85% immediately and that's it.
You only need the timer.

@lory995 : remove all timers and profiles, that'll reset the charging planner.
Set a timer to 80%, like you did before, that's all.

 

[anonymouse]

That's just completely wrong.
That doesn't make any sense.

Thanks for the kind response

You will find lots and lots of posts on this forum with various approaches. Many differ. Some work sometimes; few work always.

In my case I always had both profile and timer set -- with only one, it would not do as expected. It would keep going to 100% or sometimes it would completely miss the timer and still be at 25% the next day. I found it more reliable to start going to 85% as soon as I get home. (I have a charger which blocks power until midnight anyway, to get cheap rates).

Others have had a similar experience. But others have got it to work with only one of time or profile.

Also, regardless of whether you are using timers or profiles, this is important:
- do NOT have a destination left in the satnav (because then it says “I will charge enroute so don’t need to bother tonight”)

In summary: it is a terrible design. Thankfully my J1.2 has none of these issues.

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