Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, WERE due Dec 4th, 2022. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

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

Hello,

 

I am owner of a 2004 Cayenne 3.2 V6i. Suddenly my ECU stopped working. I cannot start the engine anymore, have no check engine light (not even when I turn on ignition) and the coolant fan will start working. I tried an ECU from an other Cayenne and with that one I can start the car, but it will immediately stop working due to anti-theft regulation.

 

My questions:

1st) can I (or Porsche) program my cayenne so that the 2nd (used) ECU works with my Cayenne, or do I need to buy a new one?

2nd) is there a fuse or part that I should check first on the defective ECU?

 

Any help or hint is welcome!

 

Best regards,

 

Chris

Link to comment
Share on other sites

  • Moderators
3 hours ago, MrHabaki said:

Hello,

 

I am owner of a 2004 Cayenne 3.2 V6i. Suddenly my ECU stopped working. I cannot start the engine anymore, have no check engine light (not even when I turn on ignition) and the coolant fan will start working. I tried an ECU from an other Cayenne and with that one I can start the car, but it will immediately stop working due to anti-theft regulation.

 

My questions:

1st) can I (or Porsche) program my cayenne so that the 2nd (used) ECU works with my Cayenne, or do I need to buy a new one?

2nd) is there a fuse or part that I should check first on the defective ECU?

 

Any help or hint is welcome!

 

Best regards,

 

Chris

 

Welcome to RennTech :welcomeani:

 

The DME and the CLU/immobilizer have to both be coded with a PIWIS in order to work together.  This is why swapping DME's does not work.  As you are going to have to tow the vehicle to a PIWIS equipped shop in any case, they should also be able to scan your original DME to find out what is up with it.  It may be a simple fix to get your original DME back online.

 

Good luck, and let us know what they find.

Link to comment
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.

×
×
  • 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.