High Voltage Battery Recall EXPANDED - ARB6 & ARB7

[DavidD]

I checked with NHTSA for my 2022 CT and only see the open brake line recall. Do we know if NHTSA is showing the battery recall online yet?

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[gtm]

They arent talking about putting new monitoring software in your car. The car already sends diagnostic data to Porsche…toggle through your vehicle settings and you can see that you can disable this “feature” (because not everyone wants their car sending automatic diagnostic reporting to Porsche…myself included)

The fact that some people disable this is why Porsche has the specific language in the recall announcement that they will notify people whose cars are flagged by the remote diagnostics but will have to inspect other vehicles manually

Read the "Description of Remedy" section of the recalls. While true that there are cars that Porsche can not collect data, and why there are actually two recalls, "As a final remedy (for both ARB6 and ARB7), an on-board diagnostic software will be installed on affected vehicles to detect future battery module anomalies". (emphasis mine).

 

[Jonathan S.]

I checked with NHTSA for my 2022 CT and only see the open brake line recall. Do we know if NHTSA is showing the battery recall online yet?

Same here for my 2022 CT.
But the official recall count matches up with cumulative U.S. Taycan sales.
So I'm thinking that every Taycan is affected.

 

[Arjan_]

Same here for my 2022 CT.
But the official recall count matches up with cumulative U.S. Taycan sales.
So I'm thinking that every Taycan is affected.

I have the same thoughts so I checked today with Porsche but nothing known yet here

 

[MichaelPNW]

Same here for my 2022 CT.
But the official recall count matches up with cumulative U.S. Taycan sales.
So I'm thinking that every Taycan is affected.

Maybe I'm misreading, but it appears the NHTSA description reflects 27,527 units potentially affected with an estimated percent with defect at 2%, which would amount to about 550 vehicles.

 

[Jonathan S.]

Hmm…my interpretation was that all 27k vehicles will have the monitoring software installed under the recall, but only an estimated 2% will eventually require a battery fix.
But I have no idea whose interpretation is correct…

 

[MichaelPNW]

Hmm…my interpretation was that all 27k vehicles will have the monitoring software installed under the recall, but only an estimated 2% will eventually require a battery fix.
But I have no idea whose interpretation is correct…

Agreed. That's what I meant. I assume every Taycan is recalled for the software but not likely for the battery.

 

[Tooney]

I checked with NHTSA for my 2022 CT and only see the open brake line recall. Do we know if NHTSA is showing the battery recall online yet?

Owner notification date for ARB5, ARB6, and ARB7 recalls is November 29.
(Unless you are informed about postings on NHTSA website, or media, you aren't supposed to know anything yet.)
Be patient. Enjoy Thanksgiving.

ps. When we are notified, the "interim" Porsche owner letter is likely to say that a remedy is not yet available, other than don't charge more than 80%. For more info on remedy not available, contact @DerekS .

 

[whitex]

You might not be able to relax quite yet. If I read the recalls correctly ARB6 & ARB7 will install monitoring software, on 27,000 cars, to more closely monitor the battery modules. That sort of implies that a module with a potential short circuit could pop up at any time in the future. Ticking time bombs anyone?

That is standard practice in situations like this. Tesla did it, except they didn't bother telling the owners, they just deployed it over-the-air and quickly identified affected cars, then capped those car's max SoH. Yea, it pissed off those owners who suddenly lost range at the newly defined "100% SoC" for their cars, but it stopped the spontaneous fires from happening after the first 2 or 3 were reported IIRC. Chevy did the same thing, except it took them almost a year to develop said software and owners had to go to the dealership to get it installed, and (@daveo4EV may have first hand info on this) this software capped all cars to 80%, at least during the data collection phase. Not sure how they collected the data (another dealer visit perhaps after some miles, to either unlock the battery to replace it?).

Porsche seems to be taking the Chevy Bolt route (maybe their management is a big fan of Bolts, which is why the standard Taycan can only charge as fast as a Bolt at a 400V DC charger).

 

[whitex]

Owner notification date for ARB5, ARB6, and ARB7 recalls is November 29.

Pre-November 29th notification method is smoke signals from the battery.

ps. When we are notified, the "interim" Porsche owner letter is likely to say that a remedy is not yet available, other than don't charge more than 80%.

So Porsche will cover towing any affected Taycan up to 20% of full range to the next working DC charger? Maybe you can call ahead and schedule towing approximating where the Taycan will run short of the next DCFC.

 

[whitex]

On a serious note, how is detecting such possibly severe outcome faults with the battery not already part of the car's software after 5 years of production??? At the very least there should be a warning to tell the owner the car is about to catch on fire. I remember reading about an early Model S fire, where after running over a trailer hitch (puncturing the battery), the car warned the drivers to pull over and get out of the car as soon as possible.

 

[Tooney]

Here are existing "HV battery may short circuit" recalls (US info only)

Inspect, repair, replace:

APB5 Dec. 2023 205 vehicles​

ARA4 Mar. 2024 606 vehicles​

ARA5 Mar. 2024 749 vehicles​

ARB5 Oct. 2024 193 vehicles​

Inspect, repair/replace if necessary, and install on-board diagnostic software:

ARA6 & ARA7 Oct. 2024 27527 vehicles (All Taycans produced before April, 2024, including those with prior battery fixes.)​

Seriously, I see no way that Porsche NA and dealers have the capacity to remedy these recalls in the foreseeable future.

It is not going to happen.

Note: "Inspect, repair, replace" for above recalls means problem HV batteries removed from the car, shipped to and returned from central battery repair facility, and reinstalled by dealer.

 

[gtm]

That is standard practice in situations like this. Tesla did it, except they didn't bother telling the owners, they just deployed it over-the-air and quickly identified affected cars, then capped those car's max SoH. ...

I have no problem at all with Porsche installing software that will allow them to monitor my battery cap my battery charge if a problem is detected. (Edited original comment as the recall notice seems to indicate that monitoring has always been possible as long as data sharing is on). Wish it had been there from day 1. The problems with the recalls are multiple, standard practice or not. They are waiting 60 days to notify us. Most owners are not as involved as forum members so they remain clueless as to the risk. Software will be available eventually (1st quarter of '25?). Dealer visit for installation is almost a certainty. 80% max charge level for a long time. My car just sat at the dealer for 2.5 weeks, untouched for 15 days before finally getting around to installing new brake hoses and the updated heater. A day's work when they finally got around to it. The explanation was that the Taycan is extremely problem prone, repairs always take longer than anticipated, not enough techs. I still can't understand why they booked an appointment knowing they were backed up, but it's a good indication of the repair delays at a large dealership. The service backup when 27,000 cars need software and the estimated 700+ batteries with bad cells are identified will be monumental. All the while anyone with a nerfed battery is capped at 80% ... until the service delays cause the software to drop it to 50%. And just to ice the cake "... Porsche cannot exclude that these high-voltage battery modules might show data anomalies in the future." I get a module or two replaced and other modules could get flagged in the future. 700+? 800? All of us at some point? This is not customer service at it's finest.

 

[Tooney]

The service backup when 27,000 cars need software and the estimated 700+ batteries with bad cells are identified will be monumental. All the while anyone with a nerfed battery is capped at 80% ... until the service delays cause the software to drop it to 50%. And just to ice the cake "... Porsche cannot exclude that these high-voltage battery modules might show data anomalies in the future." I get a module or two replaced and other modules could get flagged in the future. 700+? 800? All of us at some point? This is not customer service at it's finest.

+1
The HV battery recall remedy work on all these pre-2024 Taycans will never be completed.
It's only a plan to potentially satisfy regulators.

 

[Uknown]

I wonder what this is for future versions.. “because of countermeasures enacted during production”

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