PCM Restarting XM radio fault?
#16
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i performed the Vehicle handover and it fixed the reboot issue. Now I only have XM Channel 1 Preview. Spent over an hour on chat and they couldn't get a signal to my car. I got a message on my phone (they sent me a refresh text) saying I had exceeded the maximum number of activation signals in 24 hours. The chat guy said he only had permission to send one signal to me (bizarre). Then as I was returning from my car he chatted he was leaving because I didn't respond and he assumed the problem was resolved. I'll try again tomorrow. At least it's not rebooting. The Vehicle handover does remove all your navigation favorites (bizarre), and removes your set radio stations. I work in IT, we call this a single point of failure. lol
#17
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Can I ask for some help - I don't know why this reboot is not working for me!!
1) I hold down the Info button for 10 seconds - screen goes black so I know it's rebooting
2) I then quickly push Car button
3) I then quickly push Option button
Steps #2 and 3 do nothing for me as the Porsche insignia and car come on, followed by my radio stations.
What am I doing wrong?
1) I hold down the Info button for 10 seconds - screen goes black so I know it's rebooting
2) I then quickly push Car button
3) I then quickly push Option button
Steps #2 and 3 do nothing for me as the Porsche insignia and car come on, followed by my radio stations.
What am I doing wrong?
#18
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The wife's 2010 Panamera 4s with XM enabled started doing the 2+ min. reboot two days ago - figured it was a PCM issue. Car was sitting a few weeks of I charged up the battery thinking it might be low. Same issue.
We also have a 2015 Macan Turbo with XM Radio enabled and it just started happening to it today. At least it seems like an XM update issue. I'll try the hard reset and report back.
We also have a 2015 Macan Turbo with XM Radio enabled and it just started happening to it today. At least it seems like an XM update issue. I'll try the hard reset and report back.
Press and hold the PCM>>Info button for approximately 10 seconds until the PCM reboots.
Immediately select the following from the PCM CAR>>OPTION>>Set PCM System>>Reset PCM>>Vehicle Handover>>Yes>>Yes
I had to do the "CAR>>OPTION>>Set PCM System>>Reset PCM>>Vehicle Handover>>Yes>>Yes" step twice in both cars. In both cases it came up with XM Preview Station. Disaster averted.
#19
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I just did both cars with the reset method and it worked:
Press and hold the PCM>>Info button for approximately 10 seconds until the PCM reboots.
Immediately select the following from the PCM CAR>>OPTION>>Set PCM System>>Reset PCM>>Vehicle Handover>>Yes>>Yes
I had to do the "CAR>>OPTION>>Set PCM System>>Reset PCM>>Vehicle Handover>>Yes>>Yes" step twice in both cars. In both cases it came up with XM Preview Station. Disaster averted.
Press and hold the PCM>>Info button for approximately 10 seconds until the PCM reboots.
Immediately select the following from the PCM CAR>>OPTION>>Set PCM System>>Reset PCM>>Vehicle Handover>>Yes>>Yes
I had to do the "CAR>>OPTION>>Set PCM System>>Reset PCM>>Vehicle Handover>>Yes>>Yes" step twice in both cars. In both cases it came up with XM Preview Station. Disaster averted.
#20
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I was so bummed yesterday to have my first major problem, without a warranty, after 8 weeks of ownership, and so happy today when the dealership in Houston fixed it. They fixed several others too while I was there, and they were fixing them over the phone as well. They were swamped. I video'ed the fix and am uploading it to YT now. Search "dcarter Panamera PCM" and you should find it when it's ready in an hour or so. I'll add the link here later.
#22
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I cancelled my Sirius Subscription and yelled at them since my subscription just renewed on 20th then all of a sudden this happens.. I did total system reset.. initially it still didn’t work and would reboot but on my recent drive home it was ok for 30 min but I havent reinstalled my Bluetooth or anything other than just listen to radio.. so annoying.. dealer just said it was Sirius problem but now I’ve cancelled service I’m not sure they will fix it thru an update
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Lebreeze (05-24-2020)
#25
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I spent 4 hours yesterday at my local Porsche dealers, they fixed at least 30 cars either on-site or by phone. So they know-how, but no luck with mine. 5 different techs tried, 2 calls to PNA. My car is an early 2010 apparently it has a different version PCM. My dealer is going to "bump it up to the next step" whatever that means. Other than recalls this is the first problem I have had. Great car, I love my Pany.
#28
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Subscribed lol. I thought i was losing my mind when this started to happen! I thought it was the PCM itself going bad, but these symptoms above are spot on. Did the reset and it worked (hopefully permanently fixes it).
#29
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Happy to report that this procedure worked on a 2013 Panamera 4, PCM v4.3. Had to do it twice and took pictures of radio/sat presets beforehand. Personal PCM settings were all there, restored via the key I believe.
Good luck![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Good luck
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
#30
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I spent 4 hours yesterday at my local Porsche dealers, they fixed at least 30 cars either on-site or by phone. So they know-how, but no luck with mine. 5 different techs tried, 2 calls to PNA. My car is an early 2010 apparently it has a different version PCM. My dealer is going to "bump it up to the next step" whatever that means. Other than recalls this is the first problem I have had. Great car, I love my Pany.