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99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

Discussion summary

YOUR RESEARCH99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace horn plate two weekends ago

Performed · outcome unconfirmed

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

I just replaced my horn plate two weekends ago.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work

Disconnect battery so you don't

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 are DIY instructions on the internet, just make sure if you do it yourself that you disconnect the battery so you don't set off the airbag.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'Replace horn plate two weekends ago' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect battery so you don't' (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 · 6 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Use bentley book

Performed · outcome unconfirmed

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

I used the Bentley book for instructions.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Disconnect battery so you don't

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

There are DIY instructions on the internet, just make sure if you do it yourself that you disconnect the battery so you don't set off the airbag.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace padding

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

Pretty simple DIY to replace and some posts have different work arounds to replace padding.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (4)

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

Disconnect battery so you don't

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 are DIY instructions on the internet, just make sure if you do it yourself that you disconnect the battery so you don't set off the airbag.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace horn plate two weekends ago

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

I just replaced my horn plate two weekends ago.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace padding

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

Pretty simple DIY to replace and some posts have different work arounds to replace padding.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use bentley book

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

I used the Bentley book for instructions.

99 boxster horn goes off when turning steering wheel - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 986Forum: 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: 20261026T063944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have a 99 Boxster and when I turn the steering wheel from halfway to full on either side the horn goes off, anyone have any fix?

POST 2Original post

Do a search on horn plate here, I had to replace mine as when I applied the brakes my horn would honk also. Pretty simple DIY to replace and some posts have different work arounds to replace padding.

POST 3Original post

i had the same problem before w/ the same MY 99, turns out it's the horn pad. I didn't replace, my friends shop did it and it was under ext. warranty.

POST 4Original post

This is fairly common, the spring under the airbag goes out and the wire moves around triggering the horn. There are DIY instructions on the internet, just make sure if you do it yourself that you disconnect the battery so you don't set off the airbag.

POST 5Original post

This is lazy, but about a month ago I took 3 business cards, folded them in half, and inserted them into the space between the horn & steering wheel polymers meet. Took 15 seconds, and horn has worked ever since. Maybe one day I'll go deeper and fix it for good, but for how little time it took and considering I can't see the business cards.... Well, the horn works when I want it and not when I don't, and that's all I really care about right now.

POST 6Original post

I just replaced my horn plate two weekends ago. It's not that difficult. The hardest part is getting the T30 torx driver onto the screw heads holding the horn on. I used the Bentley book for instructions. It's really simple, and the part is about $55.

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