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My horn only works when my car is off

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

Discussion summary

YOUR RESEARCHMy horn only works when my car is off

Reported repair

Replace then the "clock spring"

Reported resolution
1
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 report a fix
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.

Reported fix

Then the "clock spring" that passes signal to the horn was replaced. That fixed the problem - $500 later.

My horn only works when my car is off
Read full discussion summary

Leading evidence: 'Replace then the "clock spring"' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, The most frequently discussed action is 'Replace then the "clock spring"' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Replace then the "clock spring"', supported by resolution reports in 1 discussions. 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.

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1 matching discussions · 8 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Reconnect battery

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 finished the install and reconnected the battery.

My horn only works when my car is off

Check grounds makes sense

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

It does sound like the electicity is "running backwards" (using the hot bus as a ground) -- so checking grounds makes sense.

My horn only works when my car is off

Replace combination switch

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

I recently had my steering wheel off to replace the combination switch.

My horn only works when my car is off

Run backwards" (

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

It does sound like the electicity is "running backwards" (using the hot bus as a ground) -- so checking grounds makes sense.

My horn only works when my car is off
Frequently discussed actions (5)

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

Replace then the "clock spring"

1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
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.

Reported fix

Then the "clock spring" that passes signal to the horn was replaced. That fixed the problem - $500 later.

My horn only works when my car is off

Check grounds makes sense

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

It does sound like the electicity is "running backwards" (using the hot bus as a ground) -- so checking grounds makes sense.

My horn only works when my car is off

Reconnect battery

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 finished the install and reconnected the battery.

My horn only works when my car is off

Replace combination switch

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 recently had my steering wheel off to replace the combination switch.

My horn only works when my car is off

Run backwards" (

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

It does sound like the electicity is "running backwards" (using the hot bus as a ground) -- so checking grounds makes sense.

My horn only works when my car is off
Actions with reported resolution accounts (1)

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

Replace then the "clock spring"

1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
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.

Reported fix

Then the "clock spring" that passes signal to the horn was replaced. That fixed the problem - $500 later.

My horn only works when my car is off
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

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: 20261026T120458Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Okay, I have two issues with my car. I will make separate topics on them as they're so different. Here's problem number 1. Since I got my car, my horn has not worked. Yesterday, when getting out of the car, I hit the horn accidentally in the garage and the horn beeped so immediately and fervently that I just about jumped through the sunroof in shock. I turned the car on and sure enough it doesn't work. With the car off, it works great. Has anyone else had this issue? What's the problem? Obviously I don't have bad horns.

POST 2Original post

That could be the alarm modual in transit mode.

POST 3Original post

I don't have a direct answer for you but maybe a clue.? I recently had my steering wheel off to replace the combination switch. When I remounted it I reversed the brown & brown/green? striped wire for the horn. One goes to the shaft ground and one goes to the horn frame on the steering wheel. That one must activate the relay. This is the curious part. The key was in the ign switch while I was bolting things together. I finished the install and reconnected the battery. All worked as it should until I removed the key from the ign switch. When I did the horn started to blow continuously, it would stop when I put the key back in the ign switch??? I realized what I had done and after I reversed the horn wires all was well again. Maybe your horn relay is bad?

POST 4 / ORIGINAL POSTEROriginal post

I think that you're onto something. I think it's also possible my ground wire is broken. I seem to remember the horn worked intermittently when I got it a couple of months ago.

POST 5Original post

Simple ... if another driver pisses you off, turn off the engine, honk, power back up and you're on your way.

POST 6Original post

It does sound like the electicity is "running backwards" (using the hot bus as a ground) -- so checking grounds makes sense.

POST 7Original post

I had the same issue with my 996. The first thing replaced was the igntion switch - no joy. Then the "clock spring" that passes signal to the horn was replaced. That fixed the problem - $500 later.

POST 8Original post

As long as you don't lose your middle finger in a band saw accident, you don't really need a horn.

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