Taycan and Tesla superchargers

Taycan and Tesla superchargers

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Discussion

Ballistic

Original Poster:

958 posts

268 months

Sunday 30th June
quotequote all
I have a Taycan Turbo S ST 2022 and have charged three times at two different Tesla sites on the red/white superchargers.
The first time, back in Jan this year, everything was ok.
The last two times, within the last two months, the charge has been ok, but on attempting to restart the car I experience the yellow 'Electrical System Fault - inspection Necessary' warning. When this fault is displayed the car cannot be moved as it won't go into reverse or drive. Both times, after about one hour, with several times locking/unlocking the car, the fault clears itself and I'm able to drive away.

I have no issues charging at home Ohme), work (Podpoint) or public (Ionity). The issue seems to only be with Tesla.

Has anyone else experienced the same issue and know what the solution is?

Discombobulate

5,138 posts

194 months

Sunday 30th June
quotequote all
Does it work OK on other high speed chargers delivering Tesla speeds (250kW on V4 universal)?
Does your car have an outstanding battery (APB2) recall?

Ballistic

Original Poster:

958 posts

268 months

Sunday 30th June
quotequote all
Discombobulate said:
Does it work OK on other high speed chargers delivering Tesla speeds (250kW on V4 universal)?

I have successfully charged using Ionity at anywhere between 100-250KW many times.


Does your car have an outstanding battery (APB2) recall?
How do I check for this?


Discombobulate

5,138 posts

194 months

Sunday 30th June
quotequote all
Ballistic said:
How do I check for this?
Enter you VIN here.

https://recall.porsche.com/prod/pag/vinrecalllooku...


Ballistic

Original Poster:

958 posts

268 months

Sunday 30th June
quotequote all
Discombobulate said:
Ballistic said:
How do I check for this?
Enter you VIN here.

https://recall.porsche.com/prod/pag/vinrecalllooku...
I've just done a check and It's showing no open recalls.

Many thanks for your help and suggestions so far.

Tye Green

801 posts

117 months

Sunday 30th June
quotequote all
not sure if it's helpful but the Tesla chargers also seem to cause problems for Ioniq5. don't recall what the complications were - try here...

https://www.speakev.com/forums/

RobbyJ

1,634 posts

230 months

Sunday 30th June
quotequote all
Does your car have the 150KW onboard charger option for 400v chargers? If so it could be that that's at fault?

Ballistic

Original Poster:

958 posts

268 months

Monday 1st July
quotequote all
RobbyJ said:
Does your car have the 150KW onboard charger option for 400v chargers? If so it could be that that's at fault?
My car does have the 150KW onboard charger option for 400v.
If its this that is at fault, I fail to understand why I have charging issues with Tesla but not Ionity.

RobbyJ

1,634 posts

230 months

Monday 1st July
quotequote all
Because Ionity are 800v not 400v, my understanding is the 150kw booster only gets used when charging on a 400v charger. I'm new to owning a Taycan so I may not be right but I suspect I am.

Discombobulate

5,138 posts

194 months

Monday 1st July
quotequote all
RobbyJ said:
Because Ionity are 800v not 400v, my understanding is the 150kw booster only gets used when charging on a 400v charger. I'm new to owning a Taycan so I may not be right but I suspect I am.
This sounds a likely culprit. But these cars are so complex...

rickprice

496 posts

246 months

Monday 1st July
quotequote all
Sure it’s not the battery overheating?


RobbyJ

1,634 posts

230 months

Monday 1st July
quotequote all
rickprice said:
Sure it’s not the battery overheating?
Again seems less likely if it's 400V max 150KW on a Tesla charger Vs 270KW max into the car at 800V on Ionity.

Ballistic

Original Poster:

958 posts

268 months

Wednesday 3rd July
quotequote all
It's been suggested that the issue might be heat related, as Tesla 400v charging generates more heat than 800v will, and might explain why the error takes so long to clear if something is cooling down.

I've got the car booked in with Porsche for it's first service and I've asked them to check out the high voltage charging circuitry at the same time.

Ballistic

Original Poster:

958 posts

268 months

Saturday 6th July
quotequote all
I charged at a Ionity site yesterday without any issues, although the charge was slow at 100KW. There was an Ionity engineer there, repairing one of the stalls, and I asked him if there was any particular reason for it not being as fast as usual. His response was that the charger might be throttling back due to demands on the local grid.

I was parked up next to another Taycan and I asked him if he had experienced any issues recently charging at Tesla. He said he hadn't, so the problem does seem to be with my car. He did say that there is a recall, which doesn't show up when you check your vin, related to thermal management.

exe888

27 posts

206 months

Sunday 20th October
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I've had this too. For me, it was subsequent rapid charging that then failed to initiate being the real pita. Car needed a sleep to clear the error. I wonder if it's an error when stopping the initial (Tesla) charge.

Ballistic

Original Poster:

958 posts

268 months

Sunday 20th October
quotequote all
I recently had the car serviced and the brake and heater warranty recalls done. Car is now bang up to date on recalls and software.

Dealer could find no reason as to why I'm having issues charging at Tesla. I think Porsche know more about this issue than they are letting on. My personal opinion is that the problem only seems to effect some Taycan models and is something related to the hand-shaking between the Porsche and Tesla software. Maybe Tesla are intentionally making it as hard as possible for Porsche owners to charge on their network?

I haven't dared try Tesla charging again, since the last time it temporarily bricked the car, which is frustrating as some of their sites are in good locations for my travels.

Ballistic

Original Poster:

958 posts

268 months

Tuesday 26th November
quotequote all
Update.

Today I took a brave pill and decided to try Tesla Supercharging once more to see what would happen.

The site I used was Tesla Dartford, the same site where I last experienced issues after charging my car back in the Summer.

This time I did two things differently;
1) I put the postcode of the site into the Porsche sat-nav, so that it will pre-condition the battery prior to my arrival.
2) I ended the charging session by pressing the button inside the cars charging port, rather than using the Tesla app on my phone, as I had done previously.

And the outcome was no yellow electrical system warning on getting back into the car and I was able to drive away without any issues.

I've got to say that Tesla Supercharging, when it works, is a great experience. Each site that I have seen typically has a dozen charging stations, most of them are available without having to queue, they are some of the fastest chargers out there and the cost is a lot less than the other UK high speed charging operators.
Much better than the Ionity experience right now IMO.

Ballistic

Original Poster:

958 posts

268 months

I charged at the same Tesla site today but at a different stall, and got the yellow electrical system warning again when attempting to restart the car. I had to take the keys out of range of the car for 25 minutes to let it reset before I could drive away.

This has really got me baffled with my car, it seems to be 50/50 as to whether Tesla Supercharging will trigger an error or not.
The car has been fine fast charging on all the other operator sites.