Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)
Sign in to follow this  

2014 CD PCM is flashing on and off

Recommended Posts

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???


Share this post

Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

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.

Share this post

Link to post
Share on other sites

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.

Share this post

Link to post
Share on other sites

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

Share this post

Link to post
Share on other sites

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....

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.