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)


Contributing Members
  • Content Count

  • Joined

  • Last visited

Community Reputation

1 Neutral

About mdhhorn

  • Rank
    Contributing Member

Contact Methods

  • Website URL

Profile Information

  • Gender

Profile Fields

  • From
    Chicago, Illinois
  • Porsche Club
  • Present cars
    2008 Cayenne Turbo
  • Former cars
    1998 Boxster
  1. I pulled up the carpets. Under the driver carpet I could see salt water deposits from the winter. There was a thick black line running from Terminal 15 that had a very corroded spice to three other large black lines. I ended up replacing about 2.5 feet of wire as the wire inside had turned black, I finally found shinny copper just under the dash. I then reset the car electrical -- removed the battery cables, connected them for 15 minutes they left them unconnected for 15 minutes. Next I reset the panoramic limits (turned it to the A position and tilted the dial for five seconds then held it for ~20sec until it ran through the reset). Now my panoramic roof works!! first time in over a year. I will now see if it fixed the other intermittent electrical problems I have. Thanks everyone for their input!!!!!!
  2. Thanks GSpence, sounds like a fun weekend project -- well worth it if it fixes my pano roof.
  3. Thanks for the post! Did you have a wiring schematic or did you just start pulling up the carpet and search for the grounds?
  4. Loren- i’m still having the same problem, does the codes above about the CAN comfort help? I did pull up the carpet under the driver and passenger areas and looked at the all of the wire bundles. Under the driver seat I had a couple corroded wires but after fixing them it did not help.
  5. Update I updated the firmware on my iCarsoft and reran code check. Now I’m getting the following code on the panoramic: — 0470 CAN comfort in single wire operation also I’m getting the following error on the Gateway: — 1336 CAN comfort OFF would this info help in my search for the grounding problem?
  6. If I have changed out the battery, how do I reset the electrical system? Thanks.
  7. Hello everyone! I’ve run into some electrical problems on my '08 Turbo and I’m stumped.... I've looked through a lot of Renntech posts and don't see any thing close. First the panoramic roof and sunshade were opening and stopped about foot open. Maybe coincidence, it happened right when someone opened the door. I’ve checked practically every fuse even pulling the pano-roof control unit (back where the motors are located, and the circuit board looks okay. Then the instrument panel has started to act strange. The gear indicator shows that it is all gears at once, see the photo which is while it is in drive and moving. I can shut the car down and restart and the problem goes away. The time keeps changing randomly and the outside temperature is wrong. The button that opens the rear hatch that’s on the driver door has stopped working. Then my battery died, it was five years old so no surprise. After I replaced it the airbag indicator on the panel has lit up. I’ve tried to reset the instrument panel (Main Menu> Settings > Factory Reset) but it will not allow me to select “Reset”. I’ve also pulled the fuse several times to reset the panel but no change. Today, I’ve connected my iCarSoft POR II diagnostic tool to the car. The Airbag section says it “cannot connect to the ECU” so I can not reset the airbag light. There are YouTube videos of people using the tool on Cayenne’s (albeit on newer models) to reset it so I believe I can. The Panoramic roof says it does not have any DTC codes. The lift gate button on the driver door indicates it has appropriate voltage and no DTC codes. Also, no DTC codes for instrument panel, electrical system or DME I’m not sure this is related or not, I changed out the interior incandescent bulbs with LEDs. I now know that LED bulbs give off electromagnetic interference but seems remote. (as a side note, I found this out when I put LED bulbs on my garage door opener unit and it stopped receiving commands from the remotes – I had to get special bulbs from Amazon) Yesterday, I removed all the LEDs and went back to the old bulbs – no change. Any ideas, suggestions or guesses? Thanks, Mike FYI: The car is in Drive, "D" and is in motion.
  8. Thanks for the info Loren. Any suggestion on where I should have the technician start?
  9. I've been receiving codes P1372, P1353 and P2404 on my 2008 Cayenne Turbo. I've tried clearing them and they keep coming back within 10miles. After running for 50-75 miles or so, the following codes appear, I assume they are caused by the first two: P0174 P0172 P0300 P0424 P0301 P0302. I took into the dealership to get it fixed. They said I needed replace my camshafts (948-105-051-14) Hydraulic Valve (948-105-304-07) and Valve Assembly (948-105-308-03) on both sides for a grand total “starting at” $7400. It sounded like it was a partial exploratory expedition. I said no, and asked for alternatives. The tech told the service manager they it could be sludge buildup causing the camshaft to be out of sync and I could try some type of oil additive to see if it would clear up. I did try Seafoam in the oil (yes I know) for 200 miles with no change. I also changed my gas cap in hopes 2404 would clear up, didn’t work. I plan to take it into another shop tomorrow. I’ve read the diagnostic information Loren provided above but not sure what the fix is or if the other codes tells a different story. Thanks for your help!
  10. I can lock/unlock it with the key-into-door. I did play with it yesterday and realized I was partly incorrect. When I unlock with the fob, the driver's door unlocks then re locks but the pax door unlocks and remains unlocked. I will check out the LED and report back (this weekend). My oddments has a retro fit on it to make it bigger (long before I bought it) so I dont think it is hooked up anymore. Thanks again.
  11. :welcome: You will likely need the Durametric software, a PST2, or PIWIS tester to see what central locking/alarm faults you have. Do you get any beeps when you lock the car with the key fob? No beeps but it has never beeped. I will need to fine a tech in my area with a tester.
  12. When I use my key fob to unlock my '98 boxster, it unlocks then 0.5-1 second later re-locks (both doors). The same happens when I try to lock it; it locks then unlocks 0.5-1 second later. I didn't come up with anything when I searched the forums. Any thoughts?
  • 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.