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Differences in C4S 2002 to 2005

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHDifferences in C4S 2002 to 2005

Leading reported evidence

Replace from cassette holders

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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 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
They also changed from cassette holders to CD holders in the dash.
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Differences in C4S 2002 to 2005

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Leading evidence: 'Replace from cassette holders' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace from cassette holders' (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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1 matching discussions · 6 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace hu and amps together

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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're chaning the head unit, it won't interface with the bose amp (proprietary fiberoptics) so you'll have to change HU and amps together.
Original post Read captured discussion
Differences in C4S 2002 to 2005

Replace they made each year if anyone knows off-hand

Suggestion or failed attempt

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 · Original poster
I was wondering the changes they made each year if anyone knows off-hand.
Original post Read captured discussion
Differences in C4S 2002 to 2005

Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace from cassette holders

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
They also changed from cassette holders to CD holders in the dash.
Original post Read captured discussion
Differences in C4S 2002 to 2005

Replace hu and amps together

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're chaning the head unit, it won't interface with the bose amp (proprietary fiberoptics) so you'll have to change HU and amps together.
Original post Read captured discussion
Differences in C4S 2002 to 2005

Replace they made each year if anyone knows off-hand

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 · Original poster
I was wondering the changes they made each year if anyone knows off-hand.
Original post Read captured discussion
Differences in C4S 2002 to 2005

Coverage and how to read this overview

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.

6 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: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Those are the MY for the 996 C4S, correct? I was wondering the changes they made each year if anyone knows off-hand. Thanks

POST 2Original post

If there were any changes they would be minor, since '02 - '05 were post facelift 996 cars.

POST 3Original post

none

POST 4Original post

Actually, there was one pretty significant change made in MY '03...the addition of the MOST bus system (fiber optic loop). As I did my research, I got a chance to talk with the head tech of my local dealership. I quizzed him on the types of issues he sees on C4Ss...we talked about the engine (e.g. his thoughts on RMS, etc.) and he toward the end of our chat he volunteered that he sees far less electrical issues with MY03 996s and on due to the updated electronics. And, we he does so, the faulty sensor can be quickly located and replaced (rather than tracing "yards of wire" as he put it). I still have lots to learn about these cars as I am a new Pcar owner and I don't honestly understand all the underlying architecture. That said, the comment made enough of an impression on me that I shifted my search to '03 and newer C4Ss - of course, they cost more I believe the switch to the MOST bus is for all 996s, not just the C4S.

POST 5Original post

The MOST also makes upgrading the stereo very difficult. If you're chaning the head unit, it won't interface with the bose amp (proprietary fiberoptics) so you'll have to change HU and amps together.

POST 6Original post

They also changed from cassette holders to CD holders in the dash.

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