Originally Posted by 99-911

to clarify; my set-up is CDR 23 + Bose..

fpb111 >> to my knowledge, CDR 23 has no codes.

Originally Posted by 99-911

Hi

I'm activating this thread as I'm experiencing the same problem..
my battery died & after installing the new battery, the radio was totally dead. I pulled it out & replaced the "10" fuse on the back with "15" fuse (from the spare fuses on the fuse box) & it started showing "porsche" & continued to cycle back & forth to the same screen. I looked up the problem & found this thread & did pull D8 & D9 fuses out then put them back; however, the radio became again totally dead !!
what went wrong? what's the next step?

Any input or advice is appreciated..

Originally Posted by wross996tt

Actually there are codes...they are stored in the DME. So if you swap head units you'll need to recode.

Originally Posted by 32krazy!

if you want a cdr23 i have one from my 03 bose tt. no longer lneed it would sell it cheap no code needed