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)

05 CTT stuck in 2nd gear.. among other things


Recommended Posts

Hey everyone, bare with me whilst I get through this and hopefull someone has some suggestions or can point me in the right direction.

Since I bought my 2005 Cayenne Turbo, the PSM and ABS lights come on intermittently. They tend to go off after the car is turned off then on again. Dealer said it was the right rear wheel speed sensor but no point in replacing it until the brakes are done.

A couple of days ago by battery died, which is weird because the dealer I bought it from said they had recently replaced it. I went in the mall for about 30 mins and left the key in the ignition for a passenger. The radio switched off to protect the battery after about 10 mins, yet when I came out the lights here still on and the battery dead, is this normal?

The next day the PSM and ABS lights came on as well as the check engine light but they have not gone out in 2 days. Since then, I have to keep the transmission in manual shift mode as in regular Auto mode, it will not shift out of 2nd gear. On top of that, if I manual shift it up to 3rd, 4th etc... and then pop it into Auto mode it automatically shifts back to 2nd gear and won't change. Any help with this is much appreciated.

Another issue that has come up in the '4 wheel drive system faulty' message and light come on intermittently as well. When it comes on, the switch to lock the diff does not work, when the light is not on, the switch works fine... is any of this stuff inter related?

Link to comment
Share on other sites

When a battery goes dead on a modern computer controlled car - all sorts of oddball things start happening. My WAG - you're due for a new battery (despite the claim it was replaced..) Either it's bad or your charging system isn't up to snuff. Different parts of the vehicle will start throwing codes as their computers go into a safety mode to keep from melting down due to low voltage.

Got a voltmeter? What is the standing voltage on the battery (car off for an hour or so..) and then the voltage with the engine running and nothing on?

I'd expect to see 12.8V+ (#1) for standing voltage and 13.4-14V (#2) for idle charge voltage with nothing on. If #1 is low - your battery has a problem. If #2 is low, you may have a charging problem.

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.