PCM not working

[Djay73]

So, my center console screen and passenger screen just shows Porsche and Taycan as you can see in the picture. I tried restarting the car multiple times and restting PCM twice. So far neither seem to work. Did any of you guys have same problem and hopefully know how to fix it? It's 2022 GTS, took delivery in March 2023 has 2,000 miles on it now.

TIA

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[Coteax]

So, my center console screen and passenger screen just shows Porsche and Taycan as you can see in the picture. I tried restarting the car multiple times and restting PCM twice. So far neither seem to work. Did any of you guys have same problem and hopefully know how to fix it? It's 2022 GTS, took delivery in March 2023 has 2,000 miles on it now.

TIA

I have the exact same problem.
Went back to the dealer multiple times.

They flashed the PCM with the firmware two times now and have to say that it is not happening that frequent anymore.

the service rep told me that it’s a common problem and that they are working on a software update to address this problem.

Unfortunately we will have to wait on that.

Quick temp fix would be resetting the PCM by entering and quitting the engineering menu.

Otherwise ask your Porsche dealership to reflash the firmware. Might help.

 

[Djay73]

I have the exact same problem.
Went back to the dealer multiple times.

They flashed the PCM with the firmware two times now and have to say that it is not happening that frequent anymore.

the service rep told me that it’s a common problem and that they are working on a software update to address this problem.

Unfortunately we will have to wait on that.

Quick temp fix would be resetting the PCM by entering and quitting the engineering menu.

Otherwise ask your Porsche dealership to reflash the firmware. Might help.

Thanks for the quick reply Coteax. I can't believe you had to go back twice for the same issue and even then it's a ticking bomb? Does that mean it still happens? Also, did resetting through engineering menu do anything? I tried it three times but didn't work for me at all.

 

[Tooney]

I have seen this happen a couple of times. Exiting car, locking it, taking key fob away for an hour or overnight and PCM works normally. Sometimes this is temporary and occasional.

 

[npx]

had this happen once or twice. top right corner two finger reset didn't do it. stopped the car, locked it, and went about my business getting breakfast for 30 mins, the PCM shut down for real, and then it started up just fine. beyond that, nothing for ya. good luck.

 

[AyTifosi]

Mine started doing this yesterday. 2022 GTS.

 

[4thPcar]

This happens to me every so often while I am driving. At first I freaked out. Then I realized that, as a teenager, I drove a car without the need for any of the shit the dashboard provides me. So now I don't freak out so much, and carry on. The only thing I am missing is the music until it comes back on.

 

[Fish Fingers]

Mine has done it a good few times while driving.
Sometimes it came back after a short time, other times only when I turned the car off and returned later.

Mine does it a few times in a short space of time and then is ok for long periods.

It also seems to happen at similar places with low LTE connectivity and seems to be around the time when updates (map) are also happening. Sometimes it also affects the map etc on the drivers dash.

I did the 2 finger reboot when it first happened, but just leave it now.
I feel like it's related to updates in mine.

 

[Coteax]

Thanks for the quick reply Coteax. I can't believe you had to go back twice for the same issue and even then it's a ticking bomb? Does that mean it still happens? Also, did resetting through engineering menu do anything? I tried it three times but didn't work for me at all.

It still happens from time to time but got better when they flashed the firmware for the second time.

Nothing we can do besides that and waiting for the new update..

 

[dtich]

Say what you will about insane, democracy-meddling, quasi-genius, shit-stirrer Elon Musk, but he took the radio telemetry expertise from SpaceX when he built the Model S and that system is really second to none. Porsche's implementation of OTA updates and server authentication schemas is woeful. Soup to nuts.

 

[Djay73]

I'm happy to report that it's all working this morning. I wasn't aware it was an on going issue. I guess I'll just leave it be if and when it happens again next time. Thanks for all your help.

 

[Washington]

Is there a way to disable OTA? I don't even trust the Tesla OTA. I don't trust any OTA being in tech area myself. Even Chrome which is built by Google would act weird in the middle of an udpate. And in most garage there is no good LTE signal. I'd like to be able to control when I apply the udpate, so to ensure I'm safe: I don't even care about extra fancy features, including more range. I just like the way it is.

 

[ejcintr]

Mine has done it a good few times while driving.
Sometimes it came back after a short time, other times only when I turned the car off and returned later.

Mine does it a few times in a short space of time and then is ok for long periods.

It also seems to happen at similar places with low LTE connectivity and seems to be around the time when updates (map) are also happening. Sometimes it also affects the map etc on the drivers dash.

I did the 2 finger reboot when it first happened, but just leave it now.
I feel like it's related to updates in mine.

It has happened to me as well the engineering reboot has worked for me so far... seems like the OP has tried this a few times - strange that it has not worked but given the PCM sw quality.... not suprised that it has not worked - probably best to bring it into the shop. RANT- why in gods name does Porsche not allow updates via wi-fi - we know that its possible- END RANT.

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