17 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCDR 23 radio code???
Leading reported evidence
Disconnect battery
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion · Original poster
Am about to disconnect the battery to make it safe to remove a door trim -- will wait the required minute so the side air bag doesn't 'blow'.
Leading evidence: 'Disconnect battery' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect battery' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Car is a 2002 Targa with CDR 23 radio -- will I need a code when I reconnect the battery or is it "self testing"?
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
Only a dealer or shop with a PST2 or PIWIS tester can replace a MOST bus radio (i.e.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Car is a 2002 Targa with CDR 23 radio -- will I need a code when I reconnect the battery or is it "self testing"?
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
These radios are security tested on the MOST (fiber optic bus) system to see if they are the "programmed" radio.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T003124Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Am about to disconnect the battery to make it safe to remove a door trim -- will wait the required minute so the side air bag doesn't 'blow'.
Car is a 2002 Targa with CDR 23 radio -- will I need a code when I reconnect the battery or is it "self testing"?
Thanks
RennTech.org will get your code for you. It cost to join but it is well worth. They have a lot of tech info including manuals for 996 & accessories, TSB etc.
RennTech can get the code for you most of the time, but it's not guaranteed. You can call Becker and get the code too - I think they charge about $35 for it.
for an 02' ?
I thought they had memory in later years?
BTW you can get a little unit that plugs into the cigarrette lighter that will keep the power for the memor "ON"
Perhaps, but when one wants top Replace the head unit an 02- is nice and easy, newer ones... not so much.
I have that issue with my Cayenne, stinkin MOST bus...
OK -- I'm a Renntech member so I will ask Loren for the code -- but -- after doing some more "threading" I am thinking all CDR23s are the "late type" and that the cdr22 is the one that needs to code -- mine has the amp box in the front trunk back a bit behind the top of the spare wheel.
Any clarification?
CDR-23 (or later):
These radios do not have a security code - that is, not that the user enters.
These radios are security tested on the MOST (fiber optic bus) system to see if they are the "programmed" radio. Only a dealer or shop with a PST2 or PIWIS tester can replace a MOST bus radio (i.e. CDR-23, CDR-24).
Thanks Loren -- I just went to the radio code thread you maintain and read that so I cut and came back her to post and ya' beat me -- thanks for the help -- the regulars like me that worry a bit when diving into their cars are given confidence by you generous folk who help us -- thanks again
I should clarify by saying I will have the CDR23 Becker head unit and the correct amp from an '03 C4.
That being the case will fibre optics still be an issue for me installing in an older vehicle or will I be okay?
Suppose it will be locked?
The security code for the 2003 -> is stored on board, ECU or ? You will probably be able to get it from Becker if you give them the CDR serial number.
I have a 2004 with NAV. I want to add an IPod. To do that I have to add a Dennison 500, available from Bumper Plugs, to get the IPod into the optic "circuit". I also will have to go to the dealer to have them program the IPod into the cars options as a CD Changer. Yours probably will go straight from CDR to amp & back. Not sure if you can or need to program anything to talk to each other.
The fiber side of my circuit looks like this:
This is a source reference. Confirm exact model applicability in the original material.
