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)

Help With CDR23 Radio Code

Recommended Posts

I have recently installed an MY02 Carrera C2 instrument cluster (and Carrera oil pressure sender) in my MY03 base Boxster. Everything works properly except for the CDR23 radio. I started this modification knowing that there would be issues with the radio, but had read in one of 6 or 7 previous threads that the radio could be "massaged" with a PIWIS or PST2 into thinking it was still talking to the original instrument cluster. The CDR23 doesn't use a "radio code" like the earlier CDR220's, etc.

Things I've tried so far:

1. Tried to change the VIN in the cluster (couldn't), and

2. Referencing TSB 9120 (5/02), Part 3, changed the type code in the radio - and amplifier - to "911" and the variant code to "coupe", to reflect the cluster installed (no effect).

Sometimes, when I turn the radio "ON", I don't get the "PROTECT" message, I get the frequency of the last radio station I had tuned prior to changing the cluster....but I don't get any sound and can't change the station or program source.

In an earlier thread, bluboy911 had reported that an independent shop had indeed recoded his MY03 Boxster's radio to work with an MY02 Carrera instrument cluster.

If anyone can give me a hand with this, I would appreciate it.



Link to comment
Share on other sites

  • Moderators

Bluboy911 put a 2002 996 cluster in a 2003 986. http://www.renntech.org/forums/index.php?s...amp;#entry45189

A few years ago I asked Peter if it was possible to used a non MOST cluster in a MOST car and he was not sure if the radio would work. As predicted, Bluboy911 ran into the problem of getting the radio to work, but he got it to work.

Link to comment
Share on other sites

I would think that a non-MOST radio would simply connect the way any non-MOST radio connects to the car. You would use a non-MOST amplifier and connect the two of them to power. The MOST bus wouldn't know about the radio but that hardly matters.

Link to comment
Share on other sites

I expect bluboy911 transferred the data from the original cluster to the "new" cluster by using the replacement routine in the manual:

Control module replacement

In the menu item Control module replacement, the control module of the instrument cluster is replaced.

When doing this, the tank calibration is transferred from the old instrument cluster to the new one.


1. Connect PST2 and switch on the ignition

2. Select vehicle type Boxster (986) and start the automatic control module search

3. Select Instrument cluster control module

4. Select menu item Control module replacement

5. Read out values with PST2

6. Remove instrument cluster

7. Install new instrument cluster

9. Store values in the new instrument cluster with PST2.

This won't transfer the mileage, of course

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.