5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHProblem with horn being very sensitive
Reported or suspected cause
good few millimetres
Suggestion or failed attempt
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
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 suspect a cause
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.
Suspected cause · Original poster
The travel is probably a good few millimetres when the airbag is offered up to the frame, but as soon as the screws are tightened it all but disappears.
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
Got it apart (the concealed Torx30 screws accessed via holes in the back of the wheel has to be the worst piece of design I've ever seen on any vehicle), and applied one of the recommended fixes - silicone sealant on the bushes to stiffen them up.
Leading evidence: 'good few millimetres' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'good few millimetres' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Recommend fixes - silicone sealant' (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
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
Got it apart (the concealed Torx30 screws accessed via holes in the back of the wheel has to be the worst piece of design I've ever seen on any vehicle), and applied one of the recommended fixes - silicone sealant on the bushes to stiffen them up.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Recommend fixes - silicone sealant
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 · Original poster
Got it apart (the concealed Torx30 screws accessed via holes in the back of the wheel has to be the worst piece of design I've ever seen on any vehicle), and applied one of the recommended fixes - silicone sealant on the bushes to stiffen them up.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
good few millimetres
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.
Suspected cause · Original poster
The travel is probably a good few millimetres when the airbag is offered up to the frame, but as soon as the screws are tightened it all but disappears.
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.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
2 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
This worked after a fashion, but it soon became clear that the job wasn't good enough, and after another try, I decided to try a different approach.
1999 911 996 Carrera 4
A while ago, the horn started to sound intermittently, particularly when going over bumps in the road etc. There's a wealth of info about this problem online, and I diagnosed the deteriorating rubber bushes where the steering column airbag supporting frame attaches to the wheel. Got it apart (the concealed Torx30 screws accessed via holes in the back of the wheel has to be the worst piece of design I've ever seen on any vehicle), and applied one of the recommended fixes - silicone sealant on the bushes to stiffen them up.
This worked after a fashion, but it soon became clear that the job wasn't good enough, and after another try, I decided to try a different approach. I sourced four little spacers, about 3 mm wide, from some plastic cupboard fittings, and installed one under each bush to hold the frame further away from the wheel and horn contacts. Very pleased with my solution, until I was amazed to find that it didn't make any difference! There is still hardly any travel in the airbag/horn assembly before the horn sounds. I took it all apart again and studied the way the airbag and frame fit together and for the life of me I can't see how it's not working. The travel is probably a good few millimetres when the airbag is offered up to the frame, but as soon as the screws are tightened it all but disappears. But the screws just clamp the frame to the airbag! So how can that draw the whole thing closer to the wheel???
It's all so simple mechanically, but I just don't get what's going on. Driving me mad - and keeping the car off the road in the drive with the battery disconnected! Has anybody got any ideas?
Many thanks.
Hi Edward
This is a known issue with the rubbers on the retaining frame perishing, I’m don’t think you can get the rubbers on there own only a new retaining frame.
At £78 3 spoke wheel = 996 347 880 00 older 4 spoke 993 347 088 01
Should be fairly easy to make up something with some O rings see below link to I think a successful repair.
https://www.renntech.org/forums/topic/1728-horn-problem/
Good luck
Andy
Thanks for the reply, but if you read all of my OP you'll see that I've been around all that stuff about the rubbers. I really need an answer to the main question posted - see para 2 of OP for details.
My son-in-law had my 99 C4 off me a year ago and had the same problem. We tried everything to create some gap but nothing worked. In the end bought a new frame (about £60 from Porsche iirc) and problem solved!
This is a source reference. Confirm exact model applicability in the original material.
