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Problem with left front high beam

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

Discussion summary

YOUR RESEARCHProblem with left front high beam

Leading reported evidence

Use high wattage bulbs, thus melting some wires potentially

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
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Unsuccessful attempts
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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 contain suggestions
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Suggestion

And also look for any burned insulation or wires as previous owner could've used high wattage bulbs, thus melting some wires potentially.

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Problem with left front high beam
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Leading evidence: 'Use high wattage bulbs, thus melting some wires potentially' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Use high wattage bulbs, thus melting some wires potentially' (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.

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1 matching discussions · 6 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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

Use high wattage bulbs, thus melting some wires potentially

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

And also look for any burned insulation or wires as previous owner could've used high wattage bulbs, thus melting some wires potentially.

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Problem with left front high beam
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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.

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: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I just purchased a 2000 C4 for myself. I took the car in for a PPI and they found that the drivers side (left) high beam was not working properly. It does come on, but only produces a dull yellow glow. The same light on the passenger side is very bright. So I exchanged bulbs but still got the same result. The fuse in A2 looks fine. So has anyone else experienced this? Any advice? I need to have this working to be able to pass the safety inspection required to licence the car.

POST 2Original post

Did you try swapping out the ballasts(assuming it's Xenon)? If not Xenon's, take a multimeter and measure the voltage at the connector to the bulb to make sure you're getting the correct voltage. And also look for any burned insulation or wires as previous owner could've used high wattage bulbs, thus melting some wires potentially.

POST 3 / ORIGINAL POSTEROriginal post

It's the regular lights, not the Litronics.

POST 4Original post

Going to loan medent a spare set of halogens so he can get his safety and hopefully trouble shoot to see what is wrong with his high beams.

POST 5 / ORIGINAL POSTEROriginal post

Thanks to Revn20k00 I have found that the problem lies somewhere within my light unit. I replaced mine with his and the high beam functioned normally. Thanks again for your help. Great Rennlister.

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