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Radio on, radio off, radio on????? WTF???

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YOUR RESEARCHRadio on, radio off, radio on????? WTF???

Leading reported evidence

Replace with a newer/current production model (has latest s/w)

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Unsuccessful attempts: 1
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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.

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Performed · outcome unconfirmed
The MOST DSP amplifier (mounted under the front bonnet) is simply replaced with a newer/current production model (has latest S/W).
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Radio on, radio off, radio on????? WTF???

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Leading evidence: 'Replace with a newer/current production model (has latest s/w)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace with a newer/current production model (has latest s/w)' (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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Reset ' it

Suggestion or failed attempt

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Reported fixes: 0
Unsuccessful attempts: 1
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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.

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Suggestion
You are correct in that just turning the key on/off won't 'reset' it.
Original post Read captured discussion
Radio on, radio off, radio on????? WTF???

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.

Replace with a newer/current production model (has latest s/w)

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
The MOST DSP amplifier (mounted under the front bonnet) is simply replaced with a newer/current production model (has latest S/W).
Original post Read captured discussion
Radio on, radio off, radio on????? WTF???

Reset ' it

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
You are correct in that just turning the key on/off won't 'reset' it.
Original post Read captured discussion
Radio on, radio off, radio on????? WTF???

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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.

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

Rennlist: 1 discussions

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

Generation: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Last week I cranked up the '04 C4S Cab and the radio came on properly but without sound. Well, except for a high pitched whistle. Display was fine. Just no true audio. All memory settings and stations were fine. Turned off the car, restarted, radio was fine again. Happened again last night. Turning off just the radio won't solve it. But turning off the car, then back on a minute later, seemed to. I'm sure it's a head unit replacement issue, just wondered if anyone has had this happen. Thanks.

POST 2Original post

Eric, You are correct in that just turning the key on/off won't 'reset' it. You have to wait a few minutes for the MOST ring to shut down (the lighted ring around your headunit's volume **** goes off....or just wait about 3-4 minutes). It may not be a headunit issue, it could also be an initialization error in the MOST DSP amplifier (although when this happens, you normally get no audio, not exactly what you described). It has been corrected in several ways: 1. The MOST DSP amplifier (mounted under the front bonnet) is simply replaced with a newer/current production model (has latest S/W). 2. The MOST DSP amplifier S/W is updated by inserting a CDROM into the headunit and updating the Flash memory over the MOST ring (all MOST components are updated in vehicle this way). If that's not it, then the next step would be a headunit update/replacement. Your dealer should be aware of all of these procedures and able to accomodate you quite easily. If they give you a hard time, tell them to either fix it or the designer of the damned thing will "pay them a little visit"

POST 3 / ORIGINAL POSTEROriginal post

Hehehe...thanks L. Knew I could count on you bud!

POST 4Original post

Next time just send me a PM....I would have felt worse if I had never seen the thread and left you hanging.... Like I said, this should be an easy warranty repair.

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