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)

Rear tail /brake light warning

Recommended Posts

Hi guys back again.

My 2006 ctt has the 2008 face lift done by Porsche in Qatar for the first owner. The issue is have is lights on no problem but press the brake and the warning comes up "check rear tail light" or sometimes "check rear break ligts".

Some background info is the 2006 cluster had all incandescent bulbs but this 2008 has a led tail/brake light combo and a side light led. The others are incandescent for reverse, fog and indicator.

Now here come the brain teaser, Porsche charge the customer for two interior courtesy lights which they installed in series or parallel with the lights cluster which is obviously to trick the computer not to throw codes. But why now after 9 years is it not working?

I checked the courtesy bulbs (5w wedge type) and replaced, measure the resistance on all resistors on the pc and all looks correct and identical both sides.

To recap the tail lights do work but only. If you brake it stops working and throws the code. The brake lights will continue to illuminate but when off the tail lights are not then on as it should be.

Strange and had Piwis and durametric scan to no joy. The fault skips from side to side on the diagnostics.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • 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.