Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. 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


I just bought my first Porsche, a 2005 Cayenne S. I love this SUV on the highway but I'm concerned about the lack of smoothness in the automatic transmission around town. While I was test driving it I called up the local Porsche service center, where all the repairs/maint. on this specific SUV has been done since new, and they told me this is normal along with a slightly rough idle. They also verified this car has all the recalls and updates. My wife is calling the transmission "jumpy"... I've also had it kickdown rather hard several times after I brake lightly from about 40mph to 30mph then get lightly back on the gas. Am I just getting use to something other owners consider normal?

Another question about the locking differentials. My Cayenne has the three LED offroad lights in the center console: low, center diff lock and rear diff lock. Does this mean it has a rear diff lock? I ask because I can't seem to get the third light to come on.

Thanks for any advice or reassurance,


Link to comment
Share on other sites

  • 8 months later...

hi, i have a 2005 cayenne and lately i stqrted feeling that when i request for energy and the car shifts from third gear to fourth i get q moment when the trnsmission neutralizes. yesterday i felt the same from fourth to fifth. i am worried because in the porsche dealer they told me i need to change the valve assembly from the gearbox, very expensive, with no option.

can you give me your opinion?

is this a common problem in the cayenne?

thank you

Link to comment
Share on other sites

  • 1 month later...

To answer your question about the diff locks.....all three lights will be there.....but unless you have the offroad package.....there will be no rear diff lock.

I have a '04 CTT. Both the transfer low and front diff will "light" but i do not have the offroad package, so even though the switch goes back....it does not do anything.

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.

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.