2014 CD PCM is flashing on and off

[Dntlvet]

1. Had problems indicating information on oil level not available, that went away a few hours but is back.

2. Now Radio tuner appears, is connected but sound in MUTE (no sound).

3. Phone connects, here voice over PCM and then the screen goes black.

4. Trip to the dealer.

5. Any ideas???

 

[Dntlvet]

Dealer could not get me in.

I was told the PCM needs an update and my PCM is rebooting.

The problem seems to have disappeared, but again cannot read oil level.

Dealer apt scheduled.

[gnat]

This is a relatively common issue, though it seems more prevalent in the 11s and 12s than 13+. It does seem to be happening more with the 14s though and I keep hearing that it is related to XM and/or iPhones running iOS 8.x.

 

At least for the older units it seems that people go through a few rounds of software updates and resets, but ultimately end up with a new PCM being installed.

[GP_Customs]

I am having the same issue with my 2014 diesel with PCM..no nav now and pcm continually resets ...dealer ordered new radio blamed it on the Sirius xm bug...goes to the dealer Monday's for new installing...hoping this fixes it...just started doing it in December

[CayenneFritz]

I have the same issue with my 2011 Cayenne S rebooting every few seconds. Any able to find or device a genuine fix, it has to be software in my opinion....