Week 2 : Electrical System Fault- park safely

[PDACPA]

This is essentially what happened to me, although parked for 1 week, not 3. I'm told it's an issue with the 12v battery and my dealer feels fairly confident that is the issue. I should have a firm answer and hopefully the car back today. Will update....

If you received the red electrical error it is doubtful it is the 12v. No expert here, but the 12v powers the dash and gets the car started. The red error is related to the HV Battery and/or charger from the research I have done with others who had the error. It does cause the 12v to drain trying to get the error to clear.

Sponsored

 

[RoseyPSU]

If you received the red electrical error it is doubtful it is the 12v. No expert here, but the 12v powers the dash and gets the car started. The red error is related to the HV Battery and/or charger from the research I have done with others who had the error. It does cause the 12v to drain trying to get the error to clear.

I tend to agree with you. The most recent update I got was more nuanced: the 12v battery was being drained and needs to be replaced, but they also have a ticket open with Porsche to figure out what was causing it to be drained and the red error to occur. So I suspect replacing the 12v is not going to alleviate the issue. My guess is the onboard charger, but that's just an educated guess.

 

[PDACPA]

I tend to agree with you. The most recent update I got was more nuanced: the 12v battery was being drained and needs to be replaced, but they also have a ticket open with Porsche to figure out what was causing it to be drained and the red error to occur. So I suspect replacing the 12v is not going to alleviate the issue. My guess is the onboard charger, but that's just an educated guess.

Did they open a PRMS (Porsche Request Management System) with Porsche? My dealer did that last Wednesday. The service manager advised me that its a queue and a tech at Porsche will pick it up in 24-48 hours and review the logs and make suggestions on actions to take.

I am a calendar week today and on the 5th business day and no response other than the dealer saying they had not head back from Porsche as of 5pm yesterday.

A member on the other forum said that his dealer replaced the HV Charger and 20 days later he had the red electrical error and they replaced the HV battery entirely. Another person said they replaced some cells in the HV Battery.

 

[PDACPA]

Member on the other forum just reported that the red electrical error means the HV battery needs to be replaced. No time frame on getting the part.

 

[Skilly]

Member on the other forum just reported that the red electrical error means the HV battery needs to be replaced. No time frame on getting the part.

It's not as linear as that. And, since the logs don't provide exact pinpointing of the root cause, they will typically run tests.

With the Taycan there are only certified techs allowed to work on it. And diagnosis and resolution are done with Porsche NA; they are required to send logs to PNA which then analyzes and makes recommendations - this is why even minor issues take a few days to work through the path to resolution.

 

[PDACPA]

It's not as linear as that. And, since the logs don't provide exact pinpointing of the root cause, they will typically run tests.

With the Taycan there are only certified techs allowed to work on it. And diagnosis and resolution are done with Porsche NA; they are required to send logs to PNA which then analyzes and makes recommendations - this is why even minor issues take a few days to work through the path to resolution.

Thanks @Skilly

Few days would be nice. For me it was 1 week to get the first response from PNA for me and they requested additional tests and logs.

 

[Skilly]

Thanks @Skilly

Few days would be nice. For me it was 1 week to get the first response from PNA for me and they requested additional tests and logs.

It could be that. The workflow is:

intake car --> tech pulls logs --> logs sent to PNA --> log review --> response --> tech implementation of response --> results/solution ....OR, rinse and repeat.

 

[Skilly]

FWIW, I have thought long and hard about the challenges and what I would do in the end. Frankly, there is no better all around electric car in the market, and I trust the Porsche brand to solve these and any other challenge that comes along.

So, even if mine becomes DOA, the first thing I would do is shop for another one...not really a surprise given that I'm writing this on the Taycan forum, but feel like it needs to be said.

 

[RoseyPSU]

Did they open a PRMS (Porsche Request Management System) with Porsche?

The good news is that the problem was diagnosed fairly quickly. The bad news is that, as suspected, the issue is with the HV battery. "Faulty cell in the HV battery" is what I'm told. They will replace the entire HV battery. I'm told it will take 6-8 weeks to get the battery and then do the repair. I suppose the other good news is that the loaner for the next 2 months is a 2023 Panamera as opposed to a base Taycan....

 

[PDACPA]

The good news is that the problem was diagnosed fairly quickly. The bad news is that, as suspected, the issue is with the HV battery. "Faulty cell in the HV battery" is what I'm told. They will replace the entire HV battery. I'm told it will take 6-8 weeks to get the battery and then do the repair. I suppose the other good news is that the loaner for the next 2 months is a 2023 Panamera as opposed to a base Taycan....

Well glad to hear you had a quick diagnosis. I am not sure if my dealer is just dragging his heels as he is too busy to address my car or Porsche is holding him up.
That is crazy how long a wait for parts. If mine goes that way I will ask for a different loaner as my base Cayenne is just not an equivalent. I am glad and thankful for a loaner, but for that length of time, I need an equivalent vehicle and compensation.

 

[DerekS]

The good news is that the problem was diagnosed fairly quickly. The bad news is that, as suspected, the issue is with the HV battery. "Faulty cell in the HV battery" is what I'm told. They will replace the entire HV battery. I'm told it will take 6-8 weeks to get the battery and then do the repair. I suppose the other good news is that the loaner for the next 2 months is a 2023 Panamera as opposed to a base Taycan....

I thought these batteries were designed such that they could replace the bad cell without doing the whole swap. Perhaps they are not doing that yet in order to analyze/triage faults.

It certainly doesn't suck to get a fresh new battery.

 

[RoseyPSU]

I thought these batteries were designed such that they could replace the bad cell without doing the whole swap. Perhaps they are not doing that yet in order to analyze/triage faults.

It certainly doesn't suck to get a fresh new battery.

That was my understanding too, but like you said, nothing wrong with a new battery and it's probably not much more of a wait time than replacing cells.

 

[PDACPA]

I thought these batteries were designed such that they could replace the bad cell without doing the whole swap. Perhaps they are not doing that yet in order to analyze/triage faults.

It certainly doesn't suck to get a fresh new battery.

Some have said they are getting the cells replaced. I posted a poll on FB and that seems to be the more common repair for the red electrical.

 

[PDACPA]

Just heard back from the dealer. Battery has a faulty cell that needs to be replaced. The part has to be shipped from Germany (usually a 5 day thing, but could be 10-12 due to supply chain etc). Battery cell replacements are done only under the supervision of the Regional Rep who has to fly in and works with one of the local dealer technicians. There is one rep for each of the four regions. So you can imagine his schedule. The repair takes 2-3 days and then a day or two of testing charging up and draining the battery. Expected time frame till the car is back, a month at a minimum based on the above. Never mind its been two weeks since the red electrical error.

 

[RoseyPSU]

Just heard back from the dealer. Battery has a faulty cell that needs to be replaced. The part has to be shipped from Germany (usually a 5 day thing, but could be 10-12 due to supply chain etc). Battery cell replacements are done only under the supervision of the Regional Rep who has to fly in and works with one of the local dealer technicians. There is one rep for each of the four regions. So you can imagine his schedule. The repair takes 2-3 days and then a day or two of testing charging up and draining the battery. Expected time frame till the car is back, a month at a minimum based on the above. Never mind its been two weeks since the red electrical error.

Interesting that in your situation they're replacing just the faulty cell and in mine they're replacing the whole battery. Sounds like identical issues.

Sponsored