14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHhorn replacement
Leading reported evidence
Replace horns
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I've replaced the horns on my brother's C4S and managed without removing the bumper.
Leading evidence: 'Replace horns' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect battery' (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.
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
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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
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Suggestion
Shame as my pre Porsche days i was always repairing items .
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
yup you could repair these , its only water ingress to a plate after all ..
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
Not cost effective for a garage to repair though and warranty a job ...
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.
14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 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: 20261026T234245Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
The hardest part is getting the bumper off and radiator duct, once that is done the horns are looking at you. They often get corroded joints or as mine had done before, got water in the horn. There are 2, high and low tone.
It's usually the bottom horn that fails .. water ingress due to the angle of it .. depending on model then it can be either high or low tone ... 996 and i THINK it's Baso .. .low tone ... remove to confirm though as 996 and 997 are opposite .
If you have small hands you don't need to remove the PU .. undo a couple of the base screws and you can get inside to remove it .
To be fair i not only have small hands i also have a ramp so cant say if its on axle stands .
You won't hear a click from a relay ..
You either have an issue with both horns are dead or the horn switch is not working .
Both horns dead would be my guess .. a voltmeter on a horn connection will soon say .. if 12 volts then its the horns .. if no voltage then its the switch or i need to investigate further .
Brought my low tone horn back from the dead twice now over 6 years. No need to replace, just a good spray of WD40 down the spout and then a few tweeks of the tuning screw on the back whilst keep operating the horn. May want to disconnect the other horn whilst you're doing it or you may upset the neighbours.
Too much throwing away and buying new when it's not needed going on in this world.
You never cease to amaze me at times .. yup you could repair these , its only water ingress to a plate after all .. poor design in that the angle of the horn allows water ingress on the bottom one .
I've replaced hundreds over the years and 90% have all been the bottom one .
Not cost effective for a garage to repair though and warranty a job ...
Shame as my pre Porsche days i was always repairing items .
Andy .. technically you could start at the relay but it's a bit of a faff to get at .. you can get the horn off with the bumper on but to be honest it's a quick job to remove it and you get to clean out leaves from the rads at the same time .
Yep, leaves out was the reason for pulling the bumper too. I'm going to strip and repaint the radiator mounting brackets, they looked like they needed some tlc while I was doing the aircon pipe under the front arch.
