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

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YOUR RESEARCHLight bulbs

Leading reported evidence

Disconnect gloves, carefully

Suggestion or failed attempt

No successful repair reported for this finding.

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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 · Original poster

I will try to do the change myself, battery disconnected, gloves, carefully with the wiring etc.

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Leading evidence: 'Disconnect gloves, carefully' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect gloves, carefully' (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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Use $8 halogen bulbs

Suggestion or failed attempt

No successful repair reported for this finding.

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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
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

I live that these cars use $8 halogen bulbs.

Light bulbs

Use search

Suggestion or failed attempt

No successful repair reported for this finding.

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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

There's a wealth of knowledge on the web and recent discussions here, use search.

Light bulbs
Frequently discussed actions (3)

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Disconnect gloves, carefully

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
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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 will try to do the change myself, battery disconnected, gloves, carefully with the wiring etc.

Light bulbs

Use $8 halogen bulbs

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

I live that these cars use $8 halogen bulbs.

Light bulbs

Use search

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's a wealth of knowledge on the web and recent discussions here, use search.

Light bulbs
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.

8 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: 20261027T201111Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi everyone! My 2001 C4 996 has the Litronic (Xenon) headlights. However the left headlight does not "shine bright" when high beam is turned on. Seems like one or two of the "regular" bulbs are broken. What bulbs are used in these headlights and is it an easy DIY? I have done a lot of work on my recent cars but never have had any reason to work with Xenon headlights (hence im a little afraid to do so). Thank you in advance.

POST 2Original post

The xenon bulbs only apply to the low beams. There�s a separate high beam bulb below the xenon bulb (or above it if you have the light housing out of the car and turned upside down). It�s a regular old H7 bulb, although you can upgrade to an LED.

POST 3Original post

Quotes source post: 18385474

here's where I started: https://rennlist.com/forums/996-foru...che-996-a.html There's a wealth of knowledge on the web and recent discussions here, use search. The litronic bulbs required for high and low beam are the same type, so you should be able to troubleshoot easily swapping the bulbs. ​​​​​​ https://rennlist.com/forums/996-foru...placement.html ​​​​​ do be very careful with the wiring in there. Over time it hardens and cracks, leaving bare copper. again, do a search for methods and suggestions. Very recent discussions here on the subject. Oh and it might seem obvious but undo those battery cables! Or the next thing you will need is fuse. Or worse. Good luck!

POST 4Original post

Quotes source post: 18385500

Ain�t true (the rest of your post was spot on tho!).

POST 5Original post

The hardest part of this is potentially dealing with the wiring harness in your headlights just falling apart, very common, insulation will flake off if you move the wires. If its bad then liquid electrical tape is going to be your friend.

POST 6 / ORIGINAL POSTEROriginal post

Dear all, So greatfull for all the information given. I will try to do the change myself, battery disconnected, gloves, carefully with the wiring etc. H5 lamp with original wattage will be used. Thanks once again!

POST 7Original post

Quotes source post: 18385717

You dont need to disconnecte the battery. Just remove the headlight with the tool provided in the toolkit Take the headlight to a comfortable work bench. There, you will see each bulb has its own access in the back of the headlight. Use this bulb finder if you have doubt with the bulb type https://www.automotivebulbfinder.com/philips/ The low beam in your car is D2S Xenon The high beam is H7

POST 8Original post

I live that these cars use $8 halogen bulbs. A blast from the past.

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