Electrical System Error - 11 failed battery modules in 2021 Taycan under 10K miles

[blexfire]

Did they replace the entire battery or replace specific modules?

Whole battery. They said 11 modules failed so the entire thing had to go. I’m sorry yours is taking so long.

One question to all - are the dealers providing good loaner cars durimg those times the cars are under repair.

They said they had no loaners. But they did pick my car up and drop it off. I used my Model X during this time.

Regarding : ABP6 - Supply cable with NEMA power plug

They don't have the cables yet; my latest service and heater replacement have that listed as well and its not closed.

Good to know, thank you!

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[Caraholic]

Whole battery. They said 11 modules failed so the entire thing had to go. I’m sorry yours is taking so long.


They said they had no loaners. But they did pick my car up and drop it off. I used my Model X during this time.


Good to know, thank you!

Amazing that mine had more modules that needed repaired, yet they chose not to replace the battery. Just strengthens my opinion mine was used to teach the local tech how to change the modules. Glad you got it handled quickly.

 

[bj33813]

Been in a base Macan with giantic loaner vehicle stickers on both side of the vehicle for the past 3 months now. The part that has been infuriating me has been the endless reasons and lack of any ETAs on next steps. 1) no timeline on when to get the 2 modules in, 2) we're also going to have to replace HV technicians gloves, 3) we're going to have replace out HV technician suits, 4) we're waiting on battery specialist from PCNA, to train our technicians, 5) other dealership has more vehicles waiting so they are getting prioritized, 6) 2 online contact to PCNA goes unanswered, 7) first call to PCNA goes into the void cause they contacted the wrong dealership regarding my case and then no call back.

We're now at the 2nd call which finally got me to a case specialist after the first line PCNA CSR couldn't do anything regarding my case, and then when I had talked with the specialist, they wanted 3-4 more weeks to get back to me.

I've been having a pretty unfortunate fun time with this one, but hey, at least Porsche Dealership gets to have me as a mobile advertisement board.

*sigh.. just frustrated now....

Wonder how NEO is able to replace a battery pack in 15 minutes? Someone needs to learn a lesson here. As to the evse supply cable, my letter said go out and buy one for $600 or less and send us the bill. Did that, now waiting on a check in the mail lol.

 

[W1NGE]

Hi there, first time posting since delving into researching this issue after it popping up on my Taycan about two weeks ago.

Adding to the voices of those that also suffered from this problem. One day I get into my car to go for a drive and I get the red ring of death: electric system error, car will not drive. Dealership diagnosed the error as faults U112300, UCell_UL_Failure_HV_Battery. Noted that 11 modules are failed. I didn't notice any range hit, but I'll admit that I haven't driven it much recently.

Pretty disappointed this has happened with such little mileage on this car, but I am pleased with how quick everything was solved. It was 13 days from calling my local Porsche dealer, to their pickup, whole pack replacement, and subsequent drop off in my driveway.

They said they were going to replace my EVSE but never did that. The invoice stated ABP6 - Supply cable with NEMA power plug but that's something I guess I need to call them about.

Overall, pretty disappointed in Porsche engineering here. I thought I maybe was just unlucky but it seems this is a pretty widespread issue with the Taycan. I have a 2017 Tesla Model X, my daughter has a 2019 Model 3, and my elderly parents are in a 2020 Model Y and although we've had trim issues, the batteries and drivetrain remain reliable. I thought I was going with the safe option by sticking with Porsche after years of 911 and Cayenne ownership, but this looks like it'll be my last.

Unfortunate indeed.

Not 'widespread' at all.

Porsche don't engineer / manufacture the batteries (or motors).

 

[CaliPorsche]

Been in a base Macan with giantic loaner vehicle stickers on both side of the vehicle for the past 3 months now. The part that has been infuriating me has been the endless reasons and lack of any ETAs on next steps. 1) no timeline on when to get the 2 modules in, 2) we're also going to have to replace HV technicians gloves, 3) we're going to have replace out HV technician suits, 4) we're waiting on battery specialist from PCNA, to train our technicians, 5) other dealership has more vehicles waiting so they are getting prioritized, 6) 2 online contact to PCNA goes unanswered, 7) first call to PCNA goes into the void cause they contacted the wrong dealership regarding my case and then no call back.

We're now at the 2nd call which finally got me to a case specialist after the first line PCNA CSR couldn't do anything regarding my case, and then when I had talked with the specialist, they wanted 3-4 more weeks to get back to me.

I've been having a pretty unfortunate fun time with this one, but hey, at least Porsche Dealership gets to have me as a mobile advertisement board.

*sigh.. just frustrated now....

That ^^^ is a sorry list of excuses that I am v sorry to see - last Thursday 22nd Feb my 2020 4S was taken into the dealership for the second time for the RCoD after failing Wednesday …. Yes this problem is common enough that it needs its own acronym………

My dealer is telling me they cannot even look at the car, let alone download diagnostics, until Porsche gives them the go ahead ……. is that really the way this process works…. Porsche (NA or Germany ) has to get back to the dealer with a case number before they can even plug in the PIWIS?

 

[buruburu]

That ^^^ is a sorry list of excuses that I am v sorry to see - last Thursday 22nd Feb my 2020 4S was taken into the dealership for the second time for the RCoD after failing Wednesday …. Yes this problem is common enough that it needs its own acronym………

My dealer is telling me they cannot even look at the car, let alone download diagnostics, until Porsche gives them the go ahead ……. is that really the way this process works…. Porsche (NA or Germany ) has to get back to the dealer with a case number before they can even plug in the PIWIS?

Not entirely certain on the intricacies of that initial process, but in my case they had to consult w/ Porsche Germany on the steps. Best guess here is that the dealership had to get confirmation from Porsche Germany and maybe PCNA on whether to do module replacement or to do a battery pack replacement. Since mine was 2 modules that had failed, they chose to replace the affected modules instead.

After having a more detailed conversation w/ the service manager last week regarding all the delays, my understanding is that the dealership isn't able to schedule a date for the battery specialist to come in until the dealership had all the necessary parts and tools. So in my case, after the modules came in, more headaches occurred with the certification dates on the protective gloves and suits that the technician would wear in order to do the repair. So what looks like had happened was that it took 3 months to get all the necessary parts & tools in, then when they were able to schedule a date and the earliest date is April. If all goes well, then supposedly the battery specialist will be doing the battery module replacement early April.

It still annoys the hell out of me cause from my perspective, since the car has been in the shop for 3 months already, I've basically lost 3 whole months to make and financial related decision related to my Taycan, but in actually will actually be 4 cause that's when the specialist will be able to do the repair. And we all know, Taycan financial value has gotten rather volatile in the worst possible way over the past several months.

TLDR version, if you have a high volt error, first thing to do is make sure the dealership you're taking the car to to do the repair actually has all the necessary tools and to make sure that the tool are still certified. The gloves and suit apparently has expiration dates which makes sense to me. If that stuff is not ready, good luck to you and get ready for some major annoyances..

 

[Tooney]

When you decide to buy a Taycan, you are well-informed about the 8-year HV battery warranty.

What you did not hear/know is that when your Taycan's HV battery needs to be diagnosed, repaired, or replaced, many owners who have posted in this forum in last couple of years have been out of their Taycans for 3 to 4 months waiting for the HV battery to be fixed.

Diagnosis review and repair approval from Germany, parts availability including replacement modules and battery, travel schedule of the official battery specialist, dealer service shop work schedule, blah, blah, blah.

POSIWID: "The purpose of a system is what it does."

 

[AV7]

Slightly off topic, so if you were to buy a used taycan how can one check the battery status (if possible)? I recall a thread stating Porsche does not provide any diagnostic info.

 

[CaliPorsche]

Slightly off topic, so if you were to buy a used taycan how can one check the battery status (if possible)? I recall a thread stating Porsche does not provide any diagnostic info.

@AV7 Read the cautionary tale in this link….. buy an OBD2 dongle and download car scanner app …… the rest is about if the owner will let you do connect it……

TBC …I love the Taycan and suggest you find one you like rather than get scared away by one that concerns you …..

 

[electricsidecar]

I'm starting to aggregate and track all of these threads in the Electric Sidecar issue tracker, given how many of these failures are going on: https://github.com/ElectricSidecar/Porsche-Taycan/issues/15.

Total is now at 24. If you experience other failures you can submit them via the link.

 

[Avantgarde]

I'm starting to aggregate and track all of these threads in the Electric Sidecar issue tracker, given how many of these failures are going on: https://github.com/ElectricSidecar/Porsche-Taycan/issues/15.

Total is now at 24. If you experience other failures you can submit them via the link.

Interesting that almost all cars are 4s or Turbos and no RWDs. Wondering if it has anything to do with RWDs putting less strain on battery with only one inverter pulling energy from the pack.

 

[electricsidecar]

Interesting that almost all cars are 4s or Turbos and no RWDs. Wondering if it has anything to do with RWDs putting less strain on battery with only one inverter pulling energy from the pack.

That's a good observation! There are quite a few more posts in the forums still to be seen so it's possible there's some RWD's hiding out there. I wonder if it has to do with the performance battery pack too maybe? Though that seems unlikely because I believe it's mostly just a difference of # of cells.

 

[alexsas]

It could be that RWDs are just under-represented, i.e. fewer of them to break and report

 

[buruburu]

It could be that RWDs are just under-represented, i.e. fewer of them to break and report

The majority of the vehicles on the aggregated list are 2020 models. RWD trim wasn't available until 2021, so that may be factor.

 

[Andy@Longforgan]

Hi there, first time posting since delving into researching this issue after it popping up on my Taycan about two weeks ago.

Adding to the voices of those that also suffered from this problem. One day I get into my car to go for a drive and I get the red ring of death: electric system error, car will not drive. Dealership diagnosed the error as faults U112300, UCell_UL_Failure_HV_Battery. Noted that 11 modules are failed. I didn't notice any range hit, but I'll admit that I haven't driven it much recently.

Pretty disappointed this has happened with such little mileage on this car, but I am pleased with how quick everything was solved. It was 13 days from calling my local Porsche dealer, to their pickup, whole pack replacement, and subsequent drop off in my driveway.

They said they were going to replace my EVSE but never did that. The invoice stated ABP6 - Supply cable with NEMA power plug but that's something I guess I need to call them about.

Overall, pretty disappointed in Porsche engineering here. I thought I maybe was just unlucky but it seems this is a pretty widespread issue with the Taycan. I have a 2017 Tesla Model X, my daughter has a 2019 Model 3, and my elderly parents are in a 2020 Model Y and although we've had trim issues, the batteries and drivetrain remain reliable. I thought I was going with the safe option by sticking with Porsche after years of 911 and Cayenne ownership, but this looks like it'll be my last.

Did they replace the entire battery or replace specific modules? I've been waiting for 3 months for my battery repair. Apparently, there's an utter lack of battery specialist that can perform the work in the Pacific Northwest and we're just waiting perpetually with no ETA on when that will happen.

I am also waiting nearly 3 months for a battery repair after the red ring of death and a dead Taycan. Latest story is car needs to be taken to another OPC to have the work done. They can only work on one at a time and they are currently working on one so mine cannot go until that one is repaired. They cannot do the repair on the other car because they are waiting for specialist tooling from Porsche. They cannot give any indication as to when I might get the car back.
Had a 911 before the Taycan for 16 years with no issues. Less than impressed to say the least.

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