Rennlist

Headlight High Beam problem (low intensity)

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHHeadlight High Beam problem (low intensity)

Leading reported evidence

Check la dismantlers first

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
Might check LA Dismantlers first.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Read full discussion summary

Leading evidence: 'Check la dismantlers first' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check la dismantlers first' (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 · 7 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Inspect bulb sockets while you are working

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
Inspect the bulb sockets while you are working on it, you may just have a bad bulb or a corroded / misaligned socket.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Inspect wiring and in particular the insulation

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
On our 20 year old cars, if you pull the headlights out (which it seems you did to replace the bulbs), carefully inspect the wiring and in particular the insulation.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Replace bulbs), carefully

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
On our 20 year old cars, if you pull the headlights out (which it seems you did to replace the bulbs), carefully inspect the wiring and in particular the insulation.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Replace wiring by cutting and splicing in new wires

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
There is no cure, no new wire harness, only to purchase new lights or manually replace the wiring by cutting and splicing in new wires.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Frequently discussed actions (6)

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

Check la dismantlers first

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
Might check LA Dismantlers first.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Inspect bulb sockets while you are working

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
Inspect the bulb sockets while you are working on it, you may just have a bad bulb or a corroded / misaligned socket.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Inspect wiring and in particular the insulation

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
On our 20 year old cars, if you pull the headlights out (which it seems you did to replace the bulbs), carefully inspect the wiring and in particular the insulation.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Replace bulbs), carefully

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
On our 20 year old cars, if you pull the headlights out (which it seems you did to replace the bulbs), carefully inspect the wiring and in particular the insulation.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Replace wiring by cutting and splicing in new wires

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
There is no cure, no new wire harness, only to purchase new lights or manually replace the wiring by cutting and splicing in new wires.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

Run about $800/each and i've heard are uber-unobtanium

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
New headlights run about $800/each and I've heard are uber-unobtanium.
Original post Read captured discussion
Headlight High Beam problem (low intensity)

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.

7 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: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello today I took my 996 C4S to be inspected and it failed due to "significant difference between left and right high beam light intensity". Both light bulbs are brand new, and I don't understand the reason for this difference (about 60% dif). I suspect it is an electrical issue. I don't know how to diagnose this by my self. Can some one help me on this? Thanks Pedro

POST 2Original post

Headlight leveling not working on one of the headlights? Durametric can move them both so you can test them. http://www.durametric.com/

POST 3Original post

On our 20 year old cars, if you pull the headlights out (which it seems you did to replace the bulbs), carefully inspect the wiring and in particular the insulation. You will find most of it deteriorating, broken, and you can just break it off the wires. There is no cure, no new wire harness, only to purchase new lights or manually replace the wiring by cutting and splicing in new wires. Sorry about that. New headlights run about $800/each and I've heard are uber-unobtanium. Might check LA Dismantlers first.

POST 4Original post

Would suggest before you get too deep into troubleshooting, if the difference is visible, you might try swamping the two bulbs to see if the problem follows. Inspect the bulb sockets while you are working on it, you may just have a bad bulb or a corroded / misaligned socket.

POST 5Original post

I will ask the obvious. Which headlights do u have?

POST 6 / ORIGINAL POSTEROriginal post

Quotes source post: 17308011

Hi, I have Xenon headlights (option 601)

POST 7Original post

could be the 'chrome' in the one projector is bad...more likely the shutter isn't opening or the bulb isn't inserted/installed correct/all the way into projector

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