Charging Timer intermittent faults

[freeforall]

I never got it completely working properly before I sold the car, but one thing improved it a lot.

I eventually contacted my EVSE provider and they looked at the logs.
The charger was often overheating and tripping off (rinse/repeat) - which obviously messed up the schedules.
When they looked into it, they actually said the mains current at our house is high (from the grid) and this led to the problem.
They remotely set the evse to run slightly warmer before tripping and this helped a lot.
In retrospect though, I wonder about the battery and car charging system.

I am also certain these was a comms problem with the car, but Porsche wouldn't look into it.

Eventually it threw the Charging Port Error and it went in and had the charger replaced, which also improved things.

My initial suggestions:

Try a different evse.
Try both ports.
See if happens during hot weather.

Various pics relating to the issue.

Thanks for the reply and all the details!
In my case it might be different then. I did a simple test where the car had a Soc of 55% and I configured it for 60% for 7am in the morning. The car started very late (no way to reach the target with my 11kw) and it was at 58% at the target time. Also I am pretty sure previously the timer never aimed to reach the number at target time but rather at target time minus about 1 hour to have a safe margin. This makes me think that the car is off by 1 hour. Interesting enough I was in vacation in a -1 time zone before the issue started happening, and I did enable timers again from MyPorsche app when I was abroad.
I will do further tests by deleting all timers and creating new ones etc and see.

PS: my parking lot is in a basement of a building. It never gets hot. Also all my neighbors use the same provider and the same type of wall charger all connected to the same electrical system. I am the only one with the challenge as I far as I know so I am leaning towards a Porsche bug at this point

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[freeforall]

I made same progress in case it helps others!
I deleted all timers and created them again yesterday. This morning the MyPorsche app started displaying an
interesting information. It is saying that my car is in UTC timezone (which is not true, the car is just next to me in Paris UTC +2).

So this has definitely something with the car’s time getting buggy.


Then I set a timer for 8:40 AM (5min later as a test). While refresrshing and sending the timers to the car the app displayed different times. It displayed 5AM instead of 7 AM for my existing timer. Also 6:40 AM instead of 8:40. This was brief and then it put back the right times. It is also no longer displaying that the car is in UTC timezone.
Probably the app displays the car’s timezone in the app when it thinks that it is different from the phone’s timezone. (Which was not true)
Now with that mention disappeared maybe the bug disappears for the time being.

I will monitor and share in case it helps someone one day