Yet another electrical system error - ARB6 software in action?

[WattTurbo]

I also provided a list of other items to check out (suspension squeaking when backing out of my driveway

I had this issue fixed about a year ago. The squeak occurred only during backing out of an incline like a driveway, and only if I turned the wheel to the left (counter clockwise). Before bringing it in I found an incline that I can reproduce the issue and had a technician go with me and he recorded it on his phone. A week later they told it's fixed and I took it for a test drive to the same incline and the squeak was still there. Needless to say I wasn't too happy to have wasted my time. Another week later, my SA assured me she tested it herself and confirmed it was fixed, and indeed it was. It turned out to be just a bushing that needed to be replaced.

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[chun]

What happens in a couple months when the next battery module trips the yellow warning/charge limited to 80% and the dealer keeps the car for weeks?

1 battery module repaired, 32 to go.

We already know. They show a "battery aged" error, limit charging to 80% for some days, then to 50%.

“B1D9***- cell module x, ageing detected”

https://static.nhtsa.gov/odi/tsbs/2025/MC-11024128-0001.pdf

Which according to the TSB is not a warrant-able item (assuming and hoping that within the 8 years, it still is).

No warrantable work is described in this case

So basically, we get fucked and have to pay. Post the 8 years, it's a useless piece of metal that burns money, safe to say. Keeping a j1 taycan more than 8 years is willingly asking to get fucked by porsche

But when I said it months ago, people were saying that Porsche would never do that. Now, the TSB seems to prove me right

I suspect another class action lawsuit, as soon as the first 8 year old taycans start to break, or some government involvement - as this is beyond insane to allow a software "fix" that only identifies a battery breaking as "being old", only to then not fix it, even though it's a physical manufacturing defect

 

[AutoX]

Sucks that there is no compensation from Porsche. My MachE has some early teething problem related to the battery. Ford gave me and others a 2 year extended warranty for the whole car. Porsche should offer something similar.

 

[JIP1080]

What happens in a couple months when the next battery module trips the yellow warning/charge limited to 80% and the dealer keeps the car for weeks?

1 battery module repaired, 32 to go.

A similar thought has been floating in my head. When this ordeal started for me I questioned if I'd trust the car to be good going forward. I'm not driving a loaner base Macan around for another 1~1.5 months.

Sucks that there is no compensation from Porsche. My MachE has some early teething problem related to the battery. Ford gave me and others a 2 year extended warranty for the whole car. Porsche should offer something similar.

Agree. My wife's Escalade has the L87 motor recently in the news for sudden failures, GM extended the warranty to something around 10 years. And didn't Porsche extend the 2015 GT3 engine warranty to 10 years for the issue with that motor?
This issue, I fear, is that someone is running the numbers behind the scenes and crossing their fingers they can run out the 8 years quickly. They're already hurting due to EVs, I would imagine they're looking to avoid more cost due to them.

 

[ovonrein]

Which according to the TSB is not a warrant-able item (assuming and hoping that within the 8 years, it still is).

I probably lack the necessary imagination but how does that not fall under the battery warranty?

Your observation past 8 years stands. But that applies to all BEVs. I remember looking into this many moons ago on the original Leaf and Nissan appeared to be offering new battery packs below cost.

I dunno what the future holds but with so much innovation happening in battery chemistry, my feeling is I would be tempted to buy a new pack. Which would likely come with another 8 year warranty.

 

[Tooney]

I would be tempted to buy a new pack. Which would likely come with another 8 year warranty.

Unlikely.

 

[chun]

I probably lack the necessary imagination but how does that not fall under the battery warranty?

Your observation past 8 years stands. But that applies to all BEVs. I remember looking into this many moons ago on the original Leaf and Nissan appeared to be offering new battery packs below cost.

I dunno what the future holds but with so much innovation happening in battery chemistry, my feeling is I would be tempted to buy a new pack. Which would likely come with another 8 year warranty.

Recalls, legally, are not a "during warranty only" thing. These battery issues all are due to manufacturing defects, which should have been solved by a recall, but porsche decided to release a software update as a solution, to inform you that the battery is "old" - which doesn't fix anything.

Judging by that TSB, porsche isn't planning to be repairing batteries, even if they are broken due to manufacturing issues, on their dime, as they are supposed to when recalling hardware.

 

[chun]

would be tempted to buy a new pack. Which would likely come with another 8 year warranty.

People that received new batteries didn't receive new warranty.

 

[Sace]

Judging by that TSB, porsche isn't planning to be repairing batteries, even if they are broken due to manufacturing issues, on their dime, as they are supposed to when recalling hardware.

Well, that is not how I read it. It simply states that if the error is present data should be sent to Porsche that will then provide details on what to do. The document simply states "No warrantable work is described in this case." which is true since they don't describe any fixes - Just that next step is to send it on to PCNA in this case.

But surely I will also have my doubts buying a out of warranty car. Since we here in DK can have 15 years / 200.000km warranty extensions I would never buy one without.

Actually a 2021 RWD with 198.000km and no warranty (and original battery) was just sold at a nearby dealer last week. Good luck to the new owner

 

[ovonrein]

People that received new batteries didn't receive new warranty.

Did they pay for new batteries? Free warranty exchanges don't come with new warranties. This is different from when Porsche offered a solid state battery, say, and I chose to buy it.

 

[ovonrein]

These battery issues all are due to manufacturing defects, ...

Well, my knees no longer work like when I was a younger man. Is this a manufacturing defect?

Somewhere between the lines of your post there is an expectation that the battery will last forever. I assumed (for all BEVs on the market) that the battery will last as long as the warranty. Every day beyond is a bonus.

My Taycan features 33 modules with 6 cells each - almost 200 cells. Each cell is manufactured within certain tolerances which over the life of the car will lead to increasing divergences within the pack. The pack flags as faulty when just one cell ages faster than its peers. In a population of 200, this has a good chance of happening. Thru no fault of anyone but the choice of technology.

This is no different at Tesla or Nissan or any of the new Chinese outfits. It is also no different from the engine in your ICE. It too will pack up one day.

 

[ovonrein]

in DK [one] can have 15 years / 200.000km warranty extension

That's impressive. What does it cost? Even a working pack will be so degraded by that point that I wonder whether it is worth it. (As we can read here, you really want to avoid battery repairs, even if free, given the massive inconvenience they present.) A quick Google reveals that a new warranted battery from Porsche costs anywhere between 25 and 40k today. I expect that price to drop by the time I get to 8 years. So, that's ca 4k per your extra year.

Another thing I noticed when I extended my Taycan warranty is that that extension covers the battery. Which is pointless at the present time (given the separate battery warranty) but if I extended the warranty from year 8 to 11, the battery would still be warranted. (I suspect that that extension would be more expensive than my current deal.)

 

[Sace]

That's impressive. What does it cost? Even a working pack will be so degraded by that point that I wonder whether it is worth it.

It costs around 12.000 DKK pr year ( a bit cheaper if you buy 3 years at a time). Car must be serviced at Porsche. Cars that have not been serviced at the dealership can be enrolled by paying for a full check before purchasing the warranty.

In fact you can extend it until the car have driven 200kkm or is 15 years old. Meaning you can actually extend it until the day it reaches this so in theory you can extend it when the car has done 199km (only for one year though).

 

[chun]

Well, my knees no longer work like when I was a younger man. Is this a manufacturing defect?

What does this have to do with an actual proven manufacturing defect?

Somewhere between the lines is my expectation of me having bought a product with no manufacturing defect from day 1, and it having be replaced/repaired.

Are you ok?

We are talking about a product people paid for. I don't expect it to last forever. I expect to get it without defects.

 

[chun]

My Taycan features 33 modules with 6 cells each - almost 200 cells. Each cell is manufactured within certain tolerances which over the life of the car will lead to increasing divergences within the pack. The pack flags as faulty when just one cell ages faster than its peers. In a population of 200, this has a good chance of happening. Thru no fault of anyone but the choice of technology.

This is no different at Tesla or Nissan or any of the new Chinese outfits. It is also no different from the engine in your ICE. It too will pack up one day.

The difference is that LG has identified that each of those cells have a non zero chance of being broken since day 1

A combination of production issues - a torn anode tab, a folded cathode tab, a peeled-off cathode or a double production topic pouch crack. Over the service life of the vehicle, these issues, when combined, can increase the risk of fire.

These issues are very real, identified, and only in cars that use these specific battery cells.

The solution of porsche was to lock the charging to 80% and then to 50% so the car doesn't catch fire - instead of, you know, actually fucking fixing the batteries?

So yes, post the 8 years warranty, you better believe I expected them to fucking fix the batteries that were shipped as broken since day 1 and were recalled but they decided to not actually fix the hardware - instead of them saying that the "battery is old" and now I need to pay for their day 1 broken product.

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