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Horn & Hi Beam Lights Turn on randomly, Faulty BCM? 

 

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 Post subject: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Fri Jul 29, 2016 1:07 pm 
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Hello, I have a 2004 Falcon BA XT. The Horn would randomly turn on (single long blast), even if the car is stationary. Also, the Hi Beam would turn on by itself, only if the Low Beam was on, otherwise its fine. The remote has no battery inserted.

Does anyone know if this is a BCM issue, or a wiring problem?

Thanks in advance.
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 Post subject: Re: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Fri Jul 29, 2016 9:20 pm 
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I'm going to take a guess at this point, at a wiring fault somewhere. ill check some diagrams over the weekend and get back to you. but from memory headlights and horn aren't through the BCM.

 

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 Post subject: Re: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Fri Jul 29, 2016 9:29 pm 
Getting Side Ways
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hoppynz wrote:
Hello, I have a 2004 Falcon BA XT. The Horn would randomly turn on (single long blast), even if the car is stationary. Also, the Hi Beam would turn on by itself, only if the Low Beam was on, otherwise its fine. The remote has no battery inserted.

Does anyone know if this is a BCM issue, or a wiring problem?

Thanks in advance.



might be a 'long' shot .... have a look at your clock spring re horn .... otherwise i don't know
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 Post subject: Re: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Fri Jul 29, 2016 9:32 pm 
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Ride: BA XR6 Turbo

Location: Jamestown
SA, Australia

Mad2 wrote:
hoppynz wrote:
Hello, I have a 2004 Falcon BA XT. The Horn would randomly turn on (single long blast), even if the car is stationary. Also, the Hi Beam would turn on by itself, only if the Low Beam was on, otherwise its fine. The remote has no battery inserted.

Does anyone know if this is a BCM issue, or a wiring problem?

Thanks in advance.



might be a 'long' shot .... have a look at your clock spring re horn .... otherwise i don't know



I'd agree on the horn

headlights id " long shot" busted wire in the stalk shorting

 

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Current Ride
BA XR6 Turbo, P3 Paint, BP Trim, Fully Stock Mods to Come!
1996 EF Falcon furura, White.
BA XR6 , P3 Paint, BG Trim, crashed in front but thinking of fixing!

BLUE BLOOD
Previous Rides
1997 EL Falcon
1980 Ford Escort

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 Post subject: Re: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Fri Jul 29, 2016 10:00 pm 
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Thanks all for replying. I took the Car to two separate Mechanics.
Mechanic1, was a dedicated Ford Service who quoted a Light Switch connection, and the connection inside the steering wheel for the Horn.
Mechanic2 quoted the BCM, and also had the wiring checked by a sparky, and given the all clear.
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 Post subject: Re: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Fri Jul 29, 2016 10:56 pm 
Getting Side Ways
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hoppynz wrote:
Thanks all for replying. I took the Car to two separate Mechanics.
Mechanic1, was a dedicated Ford Service who quoted a Light Switch connection, and the connection inside the steering wheel for the Horn.



possibly correct :lol:



hoppynz wrote:
Mechanic2 quoted the BCM, and also had the wiring checked by a sparky, and given the all clear.



reading the aftermarket book i have here ..... i believe the BEM only controls the auto light function :?:
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 Post subject: Re: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Sun Jul 31, 2016 2:00 pm 
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Age: 45

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Location: New Plymouth
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Mad2 wrote:
hoppynz wrote:
Thanks all for replying. I took the Car to two separate Mechanics.
Mechanic1, was a dedicated Ford Service who quoted a Light Switch connection, and the connection inside the steering wheel for the Horn.



possibly correct :lol:



hoppynz wrote:
Mechanic2 quoted the BCM, and also had the wiring checked by a sparky, and given the all clear.



reading the aftermarket book i have here ..... i believe the BEM only controls the auto light function :?:





Here's some more info that could help.
I removed the Hi Beam Fuse, and after a while the Low Beam lights would come on by themselves.
Nothing else electrical is affected. Cheers guys!
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 Post subject: Re: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Mon Aug 15, 2016 12:27 pm 
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New Zealand

A big thanks to those who have replied.
I had the Clock Spring replaced for the Horn, and a Light Switch installed for the Headlight issues. Its been a few weeks now with no further problems. :D
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 Post subject: Re: Horn & Hi Beam Lights Turn on randomly, Faulty BCM?
Posted: Mon Aug 15, 2016 2:25 pm 
Getting Side Ways
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Ride: '91 EB Wagoon

Location: Geeelong
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hoppynz wrote:
A big thanks to those who have replied.
I had the Clock Spring replaced for the Horn, and a Light Switch installed for the Headlight issues. Its been a few weeks now with no further problems. :D



sounds good! :D
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