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Radio on...No sound? Fuse?

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13 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHRadio on...No sound? Fuse?

Reported or suspected cause

amp

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
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 report identifying a cause
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.

Reported cause

This happened on my 04 C4S a while ago, started as an intermittent problem, turned out to be the amp.

Original post Read captured discussion
Radio on...No sound? Fuse?
Frequently discussed work

Disconnect then

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

Did you try fully disconnecting then resetting the HU?

Original post Read captured discussion
Radio on...No sound? Fuse?
Read full discussion summary

Leading evidence: 'amp' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'amp' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Disconnect then' (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.

Read captured replies

1 matching discussions · 13 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Disconnect then

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

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

Did you try fully disconnecting then resetting the HU?

Original post Read captured discussion
Radio on...No sound? Fuse?

Reset hu

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

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

Did you try fully disconnecting then resetting the HU?

Original post Read captured discussion
Radio on...No sound? Fuse?
Frequently discussed actions (2)

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

Disconnect then

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

Did you try fully disconnecting then resetting the HU?

Original post Read captured discussion
Radio on...No sound? Fuse?

Reset hu

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

Did you try fully disconnecting then resetting the HU?

Original post Read captured discussion
Radio on...No sound? Fuse?
Reported and suspected causes (1)

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

amp

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying a cause
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.

Reported cause

This happened on my 04 C4S a while ago, started as an intermittent problem, turned out to be the amp.

Original post Read captured discussion
Radio on...No sound? Fuse?
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.

13 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.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

pull the fuse and re-insert......don't know why, but this has happened and worked for me 2x.

Original post Read captured discussion

No unique explicit quoted action; no causal link assigned

Generation: 20261027T042512Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Guys My C4S showed up today (yes I will post pictures when I wash it from transport). The radio is ON but I get no sound. I looked thru the fuse diagram and I see nothing for the AMP etc. Just radio and radio option. Both fuses are good. Any other ideas or other fuses to check?

POST 2Original post

Verify amp connections in the frunk. Try another sound source (CD).

POST 4 / ORIGINAL POSTEROriginal post

I am betting it's an RMS issue

POST 5Original post

Perhaps the HU connection is a little loose? Did you try fully disconnecting then resetting the HU?

POST 6 / ORIGINAL POSTEROriginal post

Will when I get it home. I have my removal tools in easy reach

POST 8Original post

Wait, is this the "Another good day in..." thread?

POST 9Original post

pull the fuse and re-insert......don't know why, but this has happened and worked for me 2x.

POST 10Original post

This happened on my 04 C4S a while ago, started as an intermittent problem, turned out to be the amp. Best wishes that it turns out to be something less expensive for you.

POST 11Original post

I had the same thing recently. There is a fuse on the back of the hu that was blown. Quick fix if you have the tools to pull it. Good luck and looking forward to the pics-

POST 12Original post

I've had intermittent radio issue as first post mentions. My cure seems to be always turn radio off before turning car off and on after starting car. No issues since.

POST 13 / ORIGINAL POSTEROriginal post

Nothing.....I bet the amp is bad

This is a source reference. Confirm exact model applicability in the original material.