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I have a 03-996-cab with a cdr23- I have added a Gateway 500 so I can use an iPod for music- while adding the cd changer to the most system with the Porsche system tester at my mechanic- the battery on the tester died. Now the cdr23 reads "protect"- when the tester is attached it either reads "service" or a radio station. When I remove the tester it reads "protect".

With the Porsche system tester 2 can I fix this problem? If so where in the menus?

Is the Porsche system tester 2 different from a PIWIS?

Please forgive me if this has already been answered- I searched around for hours.



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see this post. it seems like it may have something to do with your situation. http://www.renntech.org/forums/index.php?s...entry9056

also search this forum for 'radio code protect'.

*edited my previous answer since the 03+ cars don't have radio codes. ;)

see this one, too. http://www.renntech.org/forums/index.php?showtopic=11598

Edited by Chris_in_NH
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There is a TSB on this...

Yes- I did run into the problem mentioned in this TSB where there was no sound. I will try this fix- thanks! but I fear that may only be half of my problem.

Is there a place I could find instructions to remove the "PROTECT" state of my CDR23 using the (Porsche system tester 2)?

Is there a tool other than the (Porsche system tester 2) that the dealer has that fixes this problem?

I think I have seen you mention a (PIWIS) is that the same thing?

Thanks for your help!


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Either can be used. You need a PST2 or PIWIS tester and then follow the procedure in TSB 5/02 9120 Activating the CD Radio "Porsche CDR 23" -- dated 10-11-02.


First off- thanks for your help.

The TSB procedure didn't work. I tried it for hours. Still no sound and the dreaded "protect" code on the cdr23.

Is my only option is to go to the dealer and open the money spigot? I have two dealers to choose form- Rusnak Porsche in Pasadena- or Porsche of downtown L.A.

Do you think sending the head unit to Becker is an option? Is this problem in the head unit? Could they re-program (reset) it? (I don't like the dealers).


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Did the PST2 or PIWIS say it was setting activating the radio?

Perhaps it would make sense to disconnect the "other devices" and see if the radio works again.

The PST2 never said that it was activating the radio- even with the Gateway 500 set in bypass mode I could never get the radio to work.

The good news is that I just picked it up from Rusnak Porsche in Pasadena- and its working!- the radio- and the Gateway 500!!!- to get them to reset the radio- and enable it to see the cd changer was $150.00.

On the up side I got to poke around on the PST2 for a while so its not such a mystery- I think the software version on it wasn't recent enough to address the TSB. (That or complete operator error on my part) naw- it couldn't be that!

Also- the instructions that came with the Gateway 500 left a little to be desired.

I have my iPod playing in my cdr23! and it only cost about $700.00!!! ouch!

thanks again for your help!

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