Jump to content

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)

Recommended Posts

Hi my C4S (2003) has an intermittent issue with the console, sound and system errors, there are a few after market items the main one being and system to use ipod/phone which seems to have replaced the cd changer. My independent Porsche repair specialist has tested and looked at the wiring, replaced the Amp and the phone unit, bypassed the phone unit and the issue is still there. Today as an example

 

I had to drive 60 KM , heavy motorway traffic outbound, Intermittant sound from start of journey but only quiet for short period second or two getting longer after about 45 minutes driving. Occassionally system error popped up “No phone, CD changer”. It also was intermittent when trying to play a CD on the console. On the return journey after 2 hours parked and switched off it was also intermittent more frequently and for longer say 10 secs. The console also twice went dark and seemed to repower up.

Has anyone any ides what the issue might be or how to find it?

Declan

 

Share this post


Link to post
Share on other sites

The phone/CD changer plug in the back on the radio is pretty straight forward. I would think either ignition switch needs replacement (causes electrical gremlins) or swap out the radio with one from eBay. (can get coding from this forum)

Share this post


Link to post
Share on other sites

I assume you have PCM.  As you must have worked out, there are 3 external units - Amplifier, CD Changer, and Telephone.  They are connected to the head unit by the MOST (fibre optic )loop.  If any one of the units in the loop fails, all communication and sound signals are lost.  Assuming the fibre optic cables are intact, and you have replaced the amp and bypassed the phone module, that only leaves the CD Changer - or the aftermarket iPod adapter.  I would try bypassing it, and see what happens.  Or if it is a Dension unit, try switching it to service mode.

Share this post


Link to post
Share on other sites

Verify that the cooling fan in the PCM unit is functioning correctly. They easily overheat and it cause odd issues.

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.

Guest
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.


  • Similar Content

    • By mdhall54
      I have a 2003 Boxster with the CDR23 radio and external amplifier mounted in the front trunk.  There are two multi-pin connectors, a fiber optic connector and an antenna connector on the rear of the head unit.  The display on the head unit in the car seems to be fine as the display appears to be working as it should.  The problem is no sound out of any speakers.  The problem was intermittent for quite a while as sometimes when I started the car I would have sound from  the speakers and other times no sound.  Sometimes I would be driving and the sound would suddenly just quit.  Now there is no sound at all, but the head unit display still appears to be working ok.  Does anyone have any suggestions as to what might be the problem?
    • By Charles Bradley
      My drivers' side headlight was replaced by the dealership after an accident. It has worked fine for two years since, but recently decided to stop working. I get a "check dipped beam" message on the cluster as a result. The turn signals work, as does a single little light on the outer side of the assembly. The main and high beam do not.
       
      After taking it out to inspect, I noticed that the electrical harness connector on the back was the problem. When I could force it into the headlights socket, the lights all powered up and worked fine, as did the high beam. So a poor connection is the culprit.
       
      One of the tabs on the side of the white connector was broken off, so the connector wiggles in its place. I imagine that the force of the headlight being pushed back wiggled it just enough that it wouldnt' seat into the headlight assembly. But getting that white connector into the socket and then back into its place without being able to get my hand in from the rear of the light was not apparent.  I also noted that the insulation on all the wires was terribly frayed and coming off in my hands as I examined it.
       
      But with a new connector in hand, I don't see how to wiggle the old one out. It slides in from the side on the back of the tray holding the headlight assembly, but is blocked from sliding out all the way.
       
      How do I rectify this?
    • By Nicky_Noodle
      I have a 2004 Cayenne S. I just got it recently, interior lights have never worked. I checked the fuse and it was blown. It calls for a 20 amp fuse but the blown one in it was a 25 amp. I had the key in the ignition if I remember correctly and put the new 20 amp fuse in and everything came on. Side note, I noticed a weird glitch with the light above the rear passenger side door and the switch on the main map reading light. The interior lights had gone off and I turned the back on and the backlight above to passenger side door was very dim. I slid the switch on the overhead console for the main map light and the rear light came back to full strength. I found that odd. Everything then worked fine. I took the key out. Next time I put the key in, immediately heard the fuse blow. Any ideas on where to start?
    • By Astarael
      Hello there, this is my first post here and I’m writing because of problem with my boxster.
      Today in the morning I’ve started my 2002 boxster and noticed strange sounds from the engine/ rear side of the car
      It’s a metallic, grinding sound like a loose piece of metal or something like that
      Sound disappears when you press gas and comes back once you loose the pedal, I don’t know if it changes while engine is warm
       
      Also, check engine light shown up yesterday, when I connected my BT OBD2 there was no error code.
      I came with that to workshop also, and they said it’s a catalyst efficiency error.
       
      I’ve had that error code a while ago, I’ve replaced mass air flow meter and check engine light disappeared. 
      I think it might be a problem with maf again because I bought not the cheaper, not the original one, but why are there these strange sounds? I’m worried about this. Could it be catalyst this time? Or again should I replace maf? This time I’ll buy original one.
       
       
       
      here are two Videos I made
       
       
       
       
       
      Also I’m sorry if you can’t understand something, my english is not perfect.
      Thank you for all replies, I hope we will solve that problem together
    • By Vertical
      When battery is dead the electrical system is down, as is the trunk for accessing battery.  
       
      I have tried connecting positive to red fuse and negative to door arm.  I ran current using jump starter but could not get latch to open.  Does anyone have any other ideas to open truck, e.g. force lift?  Thanks in advance.
       
      Is this also true for current year C4S?
       
      Quote for 1999 911:  <<There should be a release cable under one of the headlights. You need to use something to fish it out. If you do a search at renntech.org you will find it.>>
       
      Thanks
×
×
  • 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.