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2003 C4S - how can I tell what audio system is installed - Fiberoptic MOST? Analog?

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YOUR RESEARCH2003 C4S - how can I tell what audio system is installed - Fiberoptic MOST? Analog?

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Install porsche pccm+ and it was plug and play

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Discussions that performed work without a confirmed outcome: 1

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I installed the Porsche PCCM+ and it was plug and play.
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2003 C4S - how can I tell what audio system is installed - Fiberoptic MOST? Analog?

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Leading evidence: 'Install porsche pccm+ and it was plug and play' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install porsche pccm+ and it was plug and play' (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.

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Replace front/rear, you'll need

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Suggestion
If you later want to change the front/rear, you'll need to put the original radio back in.
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2003 C4S - how can I tell what audio system is installed - Fiberoptic MOST? Analog?

Frequently discussed actions (2)

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Install porsche pccm+ and it was plug and play

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
I installed the Porsche PCCM+ and it was plug and play.
Original post Read captured discussion
2003 C4S - how can I tell what audio system is installed - Fiberoptic MOST? Analog?

Replace front/rear, you'll need

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
If you later want to change the front/rear, you'll need to put the original radio back in.
Original post Read captured discussion
2003 C4S - how can I tell what audio system is installed - Fiberoptic MOST? Analog?

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9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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Generation: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello all, One of my next projects with my C4S is to upgrade to a double din radio. I'm doing my research (there is a ton of posts!). i guess one of the big things to know right off the batt is if I have a fiber optic system (MOST) or analog. From what I have read so far my year (2003) is where the transition seems to happen. Does anyone know how I can confirm what system I have in the car? Any input greatly appreciated.

POST 2Original post

A CDR23 is a MOST system.

POST 3Original post

Of course you could just slide it out and confirm by looking at the back of the unit!

POST 4Original post

MOST I installed the Porsche PCCM+ and it was plug and play.

POST 5 / ORIGINAL POSTEROriginal post

Quotes source post: 18851134

Yes, I probably deserved that. I couldn't find my VW radio release/removal tool last night. But found them this AM. Sure enough CR23. Thanks all. Now to research the MOST/ RCA converter adapter unit.

POST 6Original post

Let me know if you source one. https://rennlist.com/forums/996-foru...e-optical.html

POST 7 / ORIGINAL POSTEROriginal post

So far looks like I will be trying this one... Amazon Amazon Below is a review ftom a guy with a 2003 C4S

POST 8Original post

let me know if it actually work. i'm interested

POST 9Original post

Those converters are only 2 channel, left/right. So you need to preset the front-rear with the original radio before removing it. If you later want to change the front/rear, you'll need to put the original radio back in.

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