TSB: Replacement Requirement for 22 kW High-Voltage Charger (no longer available) - August 15, 2025

[daveo4EV]

Customer information letter:

https://static.nhtsa.gov/odi/tsbs/2025/MC-11023945-0001.pdf

Porsche's EV charging game remains strong!!

EA was a sh*tshow (VW/Audi/Porsche sponsored)
Mobile EVSE recall because of overheating power supply cables
unreliable OBC's
and now lack of support for actually replacing the units that failed

North American customers should ask their Service advisor where this mythical 11 kW OBC is for North America? Because if reports are accurate - if you have a 22 kW OBC, and they replace it with the 11 kW OBC in North America you'll be neutered to 9.6 kW…for reasons unexplained.

Porsche has got this whole EV thing nailed!! Really really strong leveraging their decades of mechanical analog design experience.

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[Brombaer1971]

I find that wording „Porsche found that the new 11KW charge is the appropriate Solution for all customers“ quite BOLD. At least I have not been asked but I do not live in North America though.

 

[daveo4EV]

I find that wording „Porsche found that the new 11KW charge is the appropriate Solution for all customers“ quite BOLD. At least I have not been asked but I do not live in North America though.

this is a world wide parts problem - but the letter is for North American customers

but there are no more 22 kW OBC's…for anyone.

 

[Brombaer1971]

I know this, I was the 1st to mention it here.

It was refering to the wording, I‘d rather call it a subpar temporary solution instead. But hey I am not a lawyer.

 

[whitex]

I find that wording „Porsche found that the new 11KW charge is the appropriate Solution for all customers“ quite BOLD. At least I have not been asked but I do not live in North America though.

I think customers should use the same strategy for other things like "I, the customer, have found that half the payment for Porsche product covers all of Porsches costs, therefore will only pay half of what was originally agreed for the delivered product". "I recognize Porsche had to incur a charge for my bounced check, therefore Porsche may be eligible for the reimbursement of the $20 bounce fee, depending on when the check was submitted to the bank. Please call me to verify eligibility."

I wonder how long before Porsche determines that half the engine power covers the needs for all 911 customers. I bet it's even true, as most of the 911's are collectors' cars in garages and going to shows.

 

[daveo4EV]

I find that wording „Porsche found that the new 11KW charge is the appropriate Solution for all customers“ quite BOLD. At least I have not been asked but I do not live in North America though.

I agree 100% and ROFL at

In fact, Porsche found that the new 11 kW OBC is the appropriate solution for all customers, and the 22 kW OBC is no longer offered as an option for any new Taycan vehicle

OMG - and in North American it's not even allowed to run at it's full 11 kW rate…Porsche is hanging it out there to be chopped off…

 

[chun]

I agree 100% and ROFL at



OMG - and in North American it's not even allowed to run at it's full 11 kW rate…Porsche is hanging it out there to be chopped off…

Mine is getting only 10.2 in Switzerland also. So not a USA only issue

 

[daveo4EV]

Mine is getting only 10.2 in Switzerland also. So not a USA only issue

10.2 is about right if you're getting the report from the in car software…on the lower center display.

the in-car software displays effective charge rate after charging losses - not the "raw" power rate coming from the EV-charger(EVSE)…

10.2 kW is entirely plausible and in line with expectations for a raw input of 11 or 10.8 kW

the most I ever saw on my 2020 Taycan was 10.46 kW from a "raw" 11 kW input - I knew the "raw" rate was 11 kW because both my electrical meter and the EVSE itself had telemetry showing an 11 kW "power load" while charging - and yet the Taycan only reported 10.46 in the vehicle - the difference is charging overhead/losses…which are in line with industry normal for AC/DC conversion overhead.

the Taycan displays the actual rate at which the battery is being/accepting a charge - not the "raw" consumption from the EVSE…which is higher due to losses in charging the battery.

you're consuming ~11 kW (and being billied for that rate by your electrical meter) - the effective change in your batteries capacity is 10.2 kW…

the variance from 10.46 to 10.2 can easily be explained by difference I voltage (220V vs. 230v vs. 240V)…

 

[Scandinavian]

https://apple.news/AUqJl0lzrSgqLcJKDPqlhgA

Seems like Porsche on top of the 22 kW issue also will be facing a class action on the PMC+ and PMCC.

They are really doing well.

 

[daveo4EV]

https://apple.news/AUqJl0lzrSgqLcJKDPqlhgA

Seems like Porsche on top of the 22 kW issue also will be facing a class action on the PMC+ and PMCC.

They are really doing well.

the American legal system {sigh}

this lawsuit was "true" between the time Porsche issued an OTA update neutering the PMCC and a recall for the PMC+

the article fails to acknowledge several "facts"

• the 50% setting was a default setting and could be easily adjusted by the end user - but Porsche did a piss poor job educating people about this "change"
• Porsche has since "fixed" the original problem and repaired and adjusted units no longer charge at the reduced rate
• Porsche's messaging has been unclear and evasive and never useful

I'm not saying prosche isn't wrong, but this lawsuit should be easily dismissed with 'facts on the ground' as of the date it was filed

Porsche has done a terrible job with its North American EV charging and has helped itself one bit with confusing spec's, unannounced changes, blame the victims, and other poor decisions. I'm not saying they deserve this lawsuit, but they haven't been the best in this area of EV ownership

 

[Rik_CT4s]

Customer information letter:

https://static.nhtsa.gov/odi/tsbs/2025/MC-11023945-0001.pdf

That explanation in the letter! Amazing how they come up with that and try to settle for reimbursement of the cost you paid....cheap solution by Porsche. Surely you can get more out of that....

 

[whitex]

Porsche is confident that the new 11kW OBC will satisfy your at-home charging needs.

Apparently they are ignoring outside of home usecases. They also don't mention how they determined that, probably because the determination was "it is better for Porsche's bottom line" rather than any actual customer use. If they monitor my usage, they can easily see that while 11kW is sufficient for maybe 99% of the time, there is this 1 % (1-3 times a year) where 19.2kW is put to use. That said, this is not even the point. Most people don't use full capabilities of their Porsches. People pay a lot of money for Turbo models and never actually unleash the full power. This doesn't mean that Porsche can just disable those capabilities because it's cheaper for them.

IMO it is Porsche showing they care about their profits over their customers. "We are not willing to pay designers to design a reliable OBC, therefore we are not willing to pay to repair your car to full performance spec under warranty. Instead, we're cutting your car's charging system performance to 50%, live with it."

 

[whitex]

"We are confident you don't need this, so we're taking it away, deal with it" is the kind of response that would turn me off from a brand. If, or when, I face this letter, I'm not just agreeing to just a refund of factory/build-time option price.

 

[Tooney]

"We are confident you don't need this, so we're taking it away, deal with it" is the kind of response that would turn me off from a brand. If, or when, I face this letter, I'm not just agreeing to just a refund of factory/build-time option price.

If the situation arises and you do not agree to refund specified by the letter, what options do you have?

 

[whitex]

If the situation arises and you do not agree to refund specified by the letter, what options do you have?

Off the to of my head: Try to negotiate for a alternative solution that addresses my primary usecases, for example they pay for a triple, load balancing 20kW DC chargers installed in my garage (replacing the triple 19.2KW EVSEs I use today) - doesn’t help outside of home, but my primary usecase is at home, so I can be reasonable. If that doesn’t work, filing a complaint with with regulators and or consumer groups that Porsche is refusing to repair a car under warranty. Last resort would be to get lawyers involved, that would have to be more on principle, but sometimes that actually triggers someone with authority to get involved, possibly agree to a settlement.

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