PCM Issue with recent iOS Update?
05-25-2020 | 06:40 PM
#151
Instructor
Joined: Jan 2005
Posts: 206
Likes: 14
From: Granger Indiana
I haven't driven my late build 2016 GTS for a couple weeks, been parked in the garage on a tender. After reading this thread, when I took it out yesterday I fully expected to encounter this issue. Fortunately mine seems to not be affected. I only took it for a quick 15 minute drive, so hopefully it doesn't rear its head on the next outing. Also not sure if it makes a difference, but I never activated XM.
05-25-2020 | 07:29 PM
#152
Instructor
Joined: Jan 2017
Posts: 190
Likes: 25
From: Long Island
Since it was due to a holiday weekend promotional, seems like we're in the clear. My car is also stored away right now.
But also makes me wonder why this hasn't happened before (has it?). Unless the functionality they used is different than other times they conducted promotionals?
If it's different then maybe they have more options and can do it differently next time without updates needed on our end.
But also makes me wonder why this hasn't happened before (has it?). Unless the functionality they used is different than other times they conducted promotionals?
If it's different then maybe they have more options and can do it differently next time without updates needed on our end.
I haven't driven my late build 2016 GTS for a couple weeks, been parked in the garage on a tender. After reading this thread, when I took it out yesterday I fully expected to encounter this issue. Fortunately mine seems to not be affected. I only took it for a quick 15 minute drive, so hopefully it doesn't rear its head on the next outing. Also not sure if it makes a difference, but I never activated XM.
05-26-2020 | 04:24 PM
#153
Rennlist Member
Joined: Aug 2019
Posts: 1,145
Likes: 522
I had my 991.1 in the garage and didn't drive it for the last 2 weeks. Drove it yesterday for about 1/2 hour and had no PCM issues. And FWIW, i do subscribe to SXM. Hopefully that means I never received the corrupted file and won't have to do the handover reset.
05-26-2020 | 04:42 PM
#154
Rennlist Member
Joined: Sep 2006
Posts: 2,002
Likes: 479
From: Alabama
That's great news! I'll be pulling my 991.1 out later this week. I use the nav system extensively so I really don't want to lose all of that in the reset.
05-26-2020 | 04:44 PM
#155
Pro
Joined: Jan 2018
Posts: 507
Likes: 232
From: America's Dairyland
05-26-2020 | 04:55 PM
#156
Rennlist Member
Joined: Aug 2019
Posts: 1,145
Likes: 522
05-26-2020 | 05:40 PM
#157
Racer
Joined: Jan 2007
Posts: 341
Likes: 39
From: Georgia
So this wasn't a "normal" patch/update, simply something that enabled free listening during a holiday weekend promotion? (Which means if we haven't driven the car since before the holiday weekend and never got the rebooting error, and now the promotional period has now passed, does that mean we are "safe" from the reboot problem? Until July 4 or Labor Day that is?)
05-26-2020 | 05:44 PM
#158
Instructor
Joined: Aug 2019
Posts: 138
Likes: 30
From: San Francisco Peninsula, CA
So. I "fixed" the problem last week, but reactivated Sirius XM yesterday.
This morning all was well.
Today after lunch, the same symptoms, restarting every 3 minutes or so.
I've "handover" reset the pcm again and will monitor. I don't plan on reactivating Sirius xm until popular consensus states the issue has been resolved
This morning all was well.
Today after lunch, the same symptoms, restarting every 3 minutes or so.
I've "handover" reset the pcm again and will monitor. I don't plan on reactivating Sirius xm until popular consensus states the issue has been resolved
05-26-2020 | 06:40 PM
#159
Nordschleife Master
Joined: Jan 2010
Posts: 5,545
Likes: 1,249
From: New York
So. I "fixed" the problem last week, but reactivated Sirius XM yesterday.
This morning all was well.
Today after lunch, the same symptoms, restarting every 3 minutes or so.
I've "handover" reset the pcm again and will monitor. I don't plan on reactivating Sirius xm until popular consensus states the issue has been resolved
This morning all was well.
Today after lunch, the same symptoms, restarting every 3 minutes or so.
I've "handover" reset the pcm again and will monitor. I don't plan on reactivating Sirius xm until popular consensus states the issue has been resolved
05-26-2020 | 10:25 PM
#160
8th Gear
Joined: Mar 2018
Posts: 8
Likes: 0
I reset the PCM system on my 2016 911 and 2016 Macan S. The 911 worked fine after one reset effort; the Macan required 4 resets. It'll be interesting to see how long this "fix" lasts. I can imagine Sirius and Porsche locking horns on this issue, and Sirius pushing out a "fix-patch" that undoes all our home remedy efforts. Oh well; c'est la vie!
BTW, the PCM manual lists the instructions for a reset, which are nearly identical to the instructions listed in this thread. I called my dealer about the issue yesterday before checking the web, and not surprisingly have not received a call back. Oh well, they could still be in a lock-down mode, or test driving new arrivals - hopefully the latter.
BTW, the PCM manual lists the instructions for a reset, which are nearly identical to the instructions listed in this thread. I called my dealer about the issue yesterday before checking the web, and not surprisingly have not received a call back. Oh well, they could still be in a lock-down mode, or test driving new arrivals - hopefully the latter.
I've not driven my 911 to determine if the PCM reset performed on 5/22/2020 is holding; and, I'm not about to cycle the starter and take it for a drive to check on this nonsense.
Last edited by XSRx; 05-27-2020 at 04:39 PM. Reason: clarification
05-27-2020 | 11:32 AM
#161
Three Wheelin'
Joined: Jul 2014
Posts: 1,338
Likes: 637
From: arizona
this is very upsetting: 1) that it happened in the first place 2) that the "fix" isn't really a fix but a workaround that causes loss of personal data and 3) that apparently even the workaround isn't permanent.
why do we build devices that update over-the-air without at least prompting the owner and asking if it's ok to apply? unacceptable.
why do we build devices that update over-the-air without at least prompting the owner and asking if it's ok to apply? unacceptable.
05-27-2020 | 12:42 PM
#162
Advanced
Joined: Dec 2018
Posts: 82
Likes: 24
From: SE Massachusetts
My PCM rebooting issue also started happening again yesterday on my way home from work. I did the handover reset again and all was good this morning. If it happens again I may just cancel my SiriusXM subscription until this is sorted out.
05-27-2020 | 03:04 PM
#163
Pro
Joined: Jan 2018
Posts: 507
Likes: 232
From: America's Dairyland
IT'S BAAACK!!
The dealer reset my PCM 6 days ago and everything was fine until this morning when it resumed rebooting every 2 or 3 minutes. I don't drive the car every day so who knows how brief a "fix" the handover reset actually is.
As before, it reboots whether I have it turned on or off.
My dealer said that I am the first one of their customers to have it reoccur after a reset, but also they said Porsche dealers nationwide are now reporting this. No solution so far. Stay tuned.
The dealer reset my PCM 6 days ago and everything was fine until this morning when it resumed rebooting every 2 or 3 minutes. I don't drive the car every day so who knows how brief a "fix" the handover reset actually is.
As before, it reboots whether I have it turned on or off.
My dealer said that I am the first one of their customers to have it reoccur after a reset, but also they said Porsche dealers nationwide are now reporting this. No solution so far. Stay tuned.
