[March 2026 Update] - Porsche's ONLY OTA update hobbles North American Taycans to max 9.6 kW charge rate…

[whitex]

As these cars / batteries are ageing more and more, people should expect more and more "nerfs" - as porsche wants to keep the number of cars in which the manufacturing defects show up, before warranty is out, to a minimum.

On the german forum people are reporting "nerfed"/reduced high speed charging curves post updates / module replacements. Haven't notice it myself, but i haven't been paing attention, and i can't remember last time i saw a peak of 270kw...

I heard J1.2's actually show the maximum DC rate the car is willing to accept, therefore making it clear to the driver whether the actual charge rate is limited by the car or the DC charger. Such information will make it harder to inconspicuously nerf cars, since even if they lie in software, it wouldn't be hard to expose if one car can draw significantly from the same charger as another.

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[SergeyIndy]

If you post the picture with the campaign ID, it is easier to identify.

Then again, if after installing a diagnostic software the OBC slows down charging, that sounds like valid basis to request a new OBC, since the diagnostic software identified the one currently in the car as dangerous and capped its capabilities. If the replacement triggers the same limit, then obviously the replacement is faulty too, so new OBC should be installed until Porsche finally finds you an unbroken one, or they finally come clean about the hidden neuter.

There is no identifier that is shown. The only identifier is "battery diagnostics" with no numbers, dates, etc.

 

[RED!]

'Funny' to see that an OTA BMS update in EU/UK broke navigation and later another update in the US broke charging speed. Not sure Porsche is aware, but these are essential things in an EV that broke down. I turned off OTA. Too much risks

I don’t think this upgrade “broke” anything. It performed exactly as expected, protecting Porsche for needing to recall shitty charge control boards that were not capable of handling the current load they were supposed to be designed for.

 

[RED!]

As these cars / batteries are ageing more and more, people should expect more and more "nerfs" - as porsche wants to keep the number of cars in which the manufacturing defects show up, before warranty is out, to a minimum.

On the german forum people are reporting "nerfed"/reduced high speed charging curves post updates / module replacements. Haven't notice it myself, but i haven't been paing attention, and i can't remember last time i saw a peak of 270kw...

This is typical behavior from manufacturers. Like the oil sludge problem: ultimately they “designed” the motor so it wouldn’t need as many oil changes - but it did, you just wouldn’t realize the problem until it’s out of warranty when the manufacturer tends not to care. Honda is a company that follows its cars for 10+ years of life vs warranty but that’s unusual.

 

[Tooney]

@SergeyIndy @whitex The OTA update about 'improving battery diagnostics' that my 22 4S got last week was listed as WST2 https://www.taycanforum.com/forum/threads/wst2-ota-update.32386/page-6#post-528406

 

[SergeyIndy]

@SergeyIndy @whitex The OTA update about 'improving battery diagnostics' that my 22 4S got last week was listed as WST2 https://www.taycanforum.com/forum/threads/wst2-ota-update.32386/page-6#post-528406

I would like to confirm that this in fact reduced your AC charging speed from 11kW to 9.6kW.

 

[Tooney]

[March 2026 Update] - Porsche's ONLY OTA update hobbles North American Taycans to max 9.6 kW charge rate…
Thread title is incorrect. This update - WST2 - is not the only OTA update for Taycan.

 

[Tooney]

I would like to confirm that this in fact reduced your AC charging speed from 11kW to 9.6kW.

I don't know. I only have a 40 amp AC charger (on 50 amp circuit). Have only ever seen around 8.7 kW shown on center console during charging before and after the update.

 

[gnr3312]

Is this it??? Should I decline?

 

[RED!]

Is this it??? Should I decline?

HARD PASS!!!!

RUN AWAY, RUN AWAY, RUN AWAY!!! (monty python reference)

 

[RAHRCR]

I just got this one today. I am pretty sure I installed this a few weeks ago…but it’s back. I am already nerfed from 10.3-10.5 down to 9.9KW currently. Not sure I want to install it.

 

[Tooney]

Link to WSS4 thread with photos describing the OTA update

 

[whitex]

I don’t think this upgrade “broke” anything. It performed exactly as expected, protecting Porsche for needing to recall shitty charge control boards that were not capable of handling the current load they were supposed to be designed for.

Your definition of "broken" seems to exclude reduced functionality (so only physical parts breakage?). By your definition, a Taycan showing an Electrical Error that prevents the car from driving, is not broken, it's improved, because Porsche is protecting the driver from driving a car with shitty battery, DC2DC converter, or OBC. The car still functions well as a garage or driveway decoration, or a seat in which to sit down and relax, so not broken, right?

 

[Flying ace]

I just got this one today. I am pretty sure I installed this a few weeks ago…but it’s back. I am already nerfed from 10.3-10.5 down to 9.9KW currently. Not sure I want to install it.

i downloaded it, but I elected not to install it. lol

 

[daveo4EV]

[March 2026 Update] - Porsche's ONLY OTA update hobbles North American Taycans to max 9.6 kW charge rate…
Thread title is incorrect. This update - WST2 - is not the only OTA update for Taycan.

I'm going with internet standards and trying to increase my engagement fees/income with click-bait headlines…everyone else is doing it - so why not me?

thanks for the heads up (and yes it's not their only OTA update) but again I'm embracing fake news - tired of swimming upstream…

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