AC charging fails for no reason

[Englishtony2002]

I am having issues with home charging on 7kW AC standard wall charger (ChargePoint brand). I have used this charger for 3 previous cars and have had no issues at all. Last night is a good example of my problem. I plugged in with 8% battery after a long day out and have an Octopus tariff between 11:30pm and 05:30am so set the car up to 100% and the charger timer to the cheap window hours. The car started to charge at 11;30 as expected and stopped just prior to midnight, having added only 3kWh, not great.
This morning I tried again, overriding the home charger to charge immediately and off she went. Again after circa. 30 mons she stopped again with charger error. I am currently trying for the 3rd time and so far have managed to cross the 30 min boundary without issue.
Of course this is super inconvenient as I often leave early morning on business and had I been doing so today this would have be catastrophic.
Any suggestions?
Thx.

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[Tooney]

When you plug the EVSE into the car, what charging rate, in kw, is displayed on the console charging panel in the car?
Does your Taycan have any charging profiles or timers set?
If you remove the setting in the chargepoint that delays start of charging to low cost hours, does the charging still stop at 30 minutes?

 

[W1NGE]

I am having issues with home charging on 7kW AC standard wall charger (ChargePoint brand). I have used this charger for 3 previous cars and have had no issues at all. Last night is a good example of my problem. I plugged in with 8% battery after a long day out and have an Octopus tariff between 11:30pm and 05:30am so set the car up to 100% and the charger timer to the cheap window hours. The car started to charge at 11;30 as expected and stopped just prior to midnight, having added only 3kWh, not great.
This morning I tried again, overriding the home charger to charge immediately and off she went. Again after circa. 30 mons she stopped again with charger error. I am currently trying for the 3rd time and so far have managed to cross the 30 min boundary without issue.
Of course this is super inconvenient as I often leave early morning on business and had I been doing so today this would have be catastrophic.
Any suggestions?
Thx.

It's been said many times before on this forum but do not use any timing feature of your EVSE - disable it.

Instead use the PCM Timer and Profile. Set the preferred charging window to match your cheap tariff .

Perhaps power cycle your EVSE too to clear it down.

 

[Englishtony2002]

When you plug the EVSE into the car, what charging rate, in kw, is displayed on the console charging panel in the car?
Does your Taycan have any charging profiles or timers set?
If you remove the setting in the chargepoint that delays start of charging to low cost hours, does the charging still stop at 30 minutes?

I spent the evening trying to sort this out. Makes absolutely no difference to remove all EVSE timers. What I finally found out was that the DC port (passenger side in UK) will not charge beyond the first 15 mins before going to Charging error. However the other port worked flawlessly. I have turned on plug and charge (which worked without issue over this last week at Ionity), and was wondering if that would have any bearing. I have uploaded the sequence that repeated again and again on the DC port, it is all over the place, changing power, reinitialising before finally failed after taking about 1.5kWh. Car is booked in Monday already to address a failed release button function on the driver port (the one that worked last night), this can be added to the list. Sorry about the mass of detail, but I hope it might help others.

 

[W1NGE]

I spent the evening trying to sort this out. Makes absolutely no difference to remove all EVSE timers. What I finally found out was that the DC port (passenger side in UK) will not charge beyond the first 15 mins before going to Charging error. However the other port worked flawlessly. I have turned on plug and charge (which worked without issue over this last week at Ionity), and was wondering if that would have any bearing. I have uploaded the sequence that repeated again and again on the DC port, it is all over the place, changing power, reinitialising before finally failed after taking about 1.5kWh. Car is booked in Monday already to address a failed release button function on the driver port (the one that worked last night), this can be added to the list. Sorry about the mass of detail, but I hope it might help others.

Ok so it could be your AC port on the DC side is failing (this happened to me a year or so ago on my first Taycan). As I understand it there is one AC onboard charger and two AC ports (driver / passenger). My AC port on the DC side failed and was replaced.

Plug & Charge shouldn't impact this and as you know bears no relationship to AC charging sessions.

I guess before diagnostics are run you can charge via the Driver's AC port.

 

[Englishtony2002]

Ok so it could be your AC port on the DC side is failing (this happened to me a year or so ago on my first Taycan). As I understand it there is one AC onboard charger and two AC ports (driver / passenger). My AC port on the DC side failed and was replaced.

Plug & Charge shouldn't impact this and as you know bears no relationship to AC charging sessions.

I guess before diagnostics are run you can charge via the Driver's AC port.

Thanks WINGE, seems very counterintuitive design that the AC ports are not simply parallel connected to the onboard AC charger, i.e. two sets of extension leads out to each wing, I suppose there has to be a mechanism in place to prevent 2 chargers being connected at the same time. On the powered doors this is easy to do, I am not sure if the manual doors that I have prevent you from opening both at the same time, I guess they do. Let's see what the dealer says, not a great start to have AC charging failures on both sides with different failure modes after just a month of ownership. P.S. the ISO 15118 Plug and charge protocol is ratified for AC chargers, just not sure if any AC chargers support it as yet. P.P.S. I am Chief Operating Officer at RAW Charging, the world's largest partner of ChargePoint inc., so if you ever need any help, advice, wise words please do not hesitate. Thx.

 

[tutis]

My front left charging port had to be replaced too under warranty as it was super flaky; at first, it wouldn't reliably charge (which made me think it was an error with the EVSE), then eventually it stopped accepting charge altogether throwing the dreaded red light every time. I tried with my portable EVSE (Juicebooster) on the mains socket and still had the red light, eventually tried the front right side which worked fine. Porsche replaced the charging port, with no challenge whatsoever – seems like a common issue. FWIW; I have the 11kW standard onboard charger, not the 22kW upgrade

 

[Englishtony2002]

My front left charging port had to be replaced too under warranty as it was super flaky; at first, it wouldn't reliably charge (which made me think it was an error with the EVSE), then eventually it stopped accepting charge altogether throwing the dreaded red light every time. I tried with my portable EVSE (Juicebooster) on the mains socket and still had the red light, eventually tried the front right side which worked fine. Porsche replaced the charging port, with no challenge whatsoever – seems like a common issue. FWIW; I have the 11kW standard onboard charger, not the 22kW upgrade

Sounds like we have the same issue then -thx.

 

[W1NGE]

Thanks WINGE, seems very counterintuitive design that the AC ports are not simply parallel connected to the onboard AC charger, i.e. two sets of extension leads out to each wing, I suppose there has to be a mechanism in place to prevent 2 chargers being connected at the same time. On the powered doors this is easy to do, I am not sure if the manual doors that I have prevent you from opening both at the same time, I guess they do. Let's see what the dealer says, not a great start to have AC charging failures on both sides with different failure modes after just a month of ownership. P.S. the ISO 15118 Plug and charge protocol is ratified for AC chargers, just not sure if any AC chargers support it as yet. P.P.S. I am Chief Operating Officer at RAW Charging, the world's largest partner of ChargePoint inc., so if you ever need any help, advice, wise words please do not hesitate. Thx.

Nice one - thx!

I think it's worse than that and it could be on opposite sides and not the one that has flashing red light - I seem to remember something the Tech said at the time but I may be wrong.

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