WRS0 software available

[laidler2]

That was my question to them and they replied with the following;

'You asked whether the software is just masking a faulty battery. It isn’t. Think of it more like an early‑warning radar: it measures tiny voltage and temperature shifts across individual cells that would otherwise go unnoticed until a cell is close to failing. If the software does detect a cell that can’t be recovered, Porsche’s standing policy is still to replace the affected module—or the entire pack if that’s the best solution—so the safety net is unchanged.'

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[tophamn]

That was my question to them and they replied with the following;

'You asked whether the software is just masking a faulty battery. It isn’t. Think of it more like an early‑warning radar: it measures tiny voltage and temperature shifts across individual cells that would otherwise go unnoticed until a cell is close to failing. If the software does detect a cell that can’t be recovered, Porsche’s standing policy is still to replace the affected module—or the entire pack if that’s the best solution—so the safety net is unchanged.'

I don't think anyone was suggesting the new software would mask any battery faults. The perceived wisdom is the new software will be able to monitor the battery status and health in far more detail than was previously possible, allowing problems to be flagged well before they cause catastrophic failure. I also guess that Porsche will use the data collected to beat LG (the battery cell manufacturer) with so they share the pain.

 

[Shug]

OK that is interesting, the new software is passive in that it does not actively shut down cells in the battery.

Do you know how the intervention to stop driving the car / shut down cells will be made?

 

[tigerbalm]

OK that is interesting, the new software is passive in that it does not actively shut down cells in the battery.

Do you know how the intervention to stop driving the car / shut down cells will be made?

We don't but its a reasonable assumption it will trigger a "red circle" alert and refuse to drive.

 

[D00notD00d]

I received confirmation today that the software has been formally released and once installed the recall will be removed.
Since the install on mine on 17/6 I’ve not noticed any range difference - a sneaky cap on SOC would have reduced the likelihood of a defect being detected.
Porsche GB also advised today that after the battery warranty expires at 8 years, the Approved Warranty cover would include battery manufacturing defects, but not as you’d expect, normal wear and tear. I’ll look out for an update to the T&Cs to see if more will be said about ‘the battery system’.
I understand via @Tooney & the German forum that a similar change was recently made there

 

[Flying ace]

It's been hard to follow the related software campaigns on the battery matter. This is only necessary if your car is identified to have possible defects such that it was advised to limit charging correct?

At my last appointment, they scanned the monitor and told me mine did not trigger the additional restrictions on charging nor qualifed into the other parts of the campaign.

Or is this incorrect and this is the monitoring software necessary for all cars?

 

[tophamn]

It's been hard to follow the related software campaigns on the battery matter. This is only necessary if your car is identified to have possible defects such that it was advised to limit charging correct?

At my last appointment, they scanned the monitor and told me mine did not trigger the additional restrictions on charging nor qualifed into the other parts of the campaign.

Or is this incorrect and this is the monitoring software necessary for all cars?

Here's my take...

EVERY J1.I Taycan will need this software - because ultimately the battery design/structure is unreliable: it's not a case of IF but WHEN problems will arise. If you can imagine chemical structures (crystals?) within the battery growing and shrinking with every charge and discharge there may be a point in time when the 2 terminals short out - and no-one knows, or can tell without ripping open each cell, how bad things are until they fail. A good battery is just one which hasn't failed yet! The new software will attempt to identify cells nearing this failure point before they actually fail.

So far Porsche (and LG) have been managing the situation to (a) prevent panic and (b) allow the majority of Taycan owners to continue to use/enjoy their cars. It could be that the problem is so bad Porsche will be forced to replace every Taycan J1.I battery - which will likely cost into the billions!

 

[chun]

I received confirmation today that the software has been formally released and once installed the recall will be removed.

Which means that if the software marks the battery as broken, past the 8 years, even though it was under a hardware recall already, since the recall is not in effect anymore, we will have to pay out of pocket.

Just like I assumed I hope somebody sues them.

But let's see if they really include the battery in the Porsche approved warranty. I suspect it's just PR talk.

 

[Flying ace]

Which means that if the software marks the battery as broken, past the 8 years, even though it was under a hardware recall already, since the recall is not in effect anymore, we will have to pay out of pocket.

Just like I assumed I hope somebody sues them.

But let's see if they really include the battery in the Porsche approved warranty. I suspect it's just PR talk.

yeah... I'm definitely out at year 6 mark...

 

[SteveDC]

I received confirmation today that the software has been formally released and once installed the recall will be removed.
Since the install on mine on 17/6 I’ve not noticed any range difference - a sneaky cap on SOC would have reduced the likelihood of a defect being detected.
Porsche GB also advised today that after the battery warranty expires at 8 years, the Approved Warranty cover would include battery manufacturing defects, but not as you’d expect, normal wear and tear. I’ll look out for an update to the T&Cs to see if more will be said about ‘the battery system’.
I understand via @Tooney & the German forum that a similar change was recently made there

I called my dealer today on the availability of WRS0 software. Not available. So I guess US waits to see what happens in Europe. If any US members got the fix I’d be interested to know.

 

[Tooney]

I called my dealer today on the availability of WRS0 software. Not available. So I guess US waits to see what happens in Europe. If any US members got the fix I’d be interested to know.

In past recalls, such as for the cabin heaters and other HV battery matters, Porsche rolled out remedies to UK and Europe prior to rollout to US Taycans.
No TSBs with instructions to US dealers for ARB6/ARB7 remedy (and the Audi e-tron equivalents) yet posted on NHTSA.
Last info from PCNA was by end of 3rd quarter 2025: https://www.taycanforum.com/forum/t...ttery-recall-april-17-2025.26666/#post-399160

 

[chun]

I called my dealer today on the availability of WRS0 software. Not available. So I guess US waits to see what happens in Europe. If any US members got the fix I’d be interested to know.

Nothing in Switzerland either. So I assume it's still not yet for mass release.
I would suspect they prioritized UK, as they were forced to issue a stop sell in that market.

 

[Leccy61]

Mine was into Porsche Reading today for ARB6 and 111 check, which it passed without issue so it’s now on a 2 year warranty.

Service advisor said that the update for on-board monitoring became available for my car yesterday following the initial releases earlier in the week, so would be installed. Correlates with what others have said. Campaign description on the invoice is same as previous “ARB6 - Checking HVB cell modules and re-programming BMCe software”

Loaner was a base Macan petrol, good for what it is but getting back into my Taycan was a reminder that it’s special.

PS. Orange triangle still showing in App, they said it would disappear soon ?

 

[Sace]

But let's see if they really include the battery in the Porsche approved warranty. I suspect it's just PR talk.

I extended my warranty with Porsche Approved two months ago and the contract clearly lists "High Voltage Battery" as a covered component.

I'm based in Denmark but the warranty seems to be provided by a German company so I suspect it will be the same in other European countries as well.

 

[chun]

I extended my warranty with Porsche Approved two months ago and the contract clearly lists "High Voltage Battery" as a covered component.

I'm based in Denmark but the warranty seems to be provided by a German company so I suspect it will be the same in other European countries as well.

Don't want to intrude on your privacy, but would it be possible to post a screenshot / picture of that part.

Current warranty also mentions HV battery, but that is is not covered beyond it's own warranty, the 8 years or 160.000 miles - they intentionally use not very clear wording, so it's easy to missunderstand that it's included.

So would very much like to compare the text with my existing one.

Thanks If you wish to not, that's also ok.

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