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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E38 (1995 - 2001)

7 Series - E38 (1995 - 2001)

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  #1  
Old 02-01-2013, 01:57 PM
eal757 eal757 is offline
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Location: new hampshire
 
Join Date: Jul 2012
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Mein Auto: BMW 740i
alarm

I have been having trouble keeping my battery charged. I had the battery checked out, and is ok, but discovered there is a heavy electrical power draw coming from my alarm horn. I found this when I disconnected the battery neg. terminal, it sparked and a loud clicking sounded from inside the right rear wheel well. The horn doesn`t actuaqlly sound. It`s more like it is trying to work and is bound up.My question is: Can I disable the horn? if so, how should I do it?

Last edited by eal757; 02-01-2013 at 05:16 PM.
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  #2  
Old 02-03-2013, 08:29 AM
eal757 eal757 is offline
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Location: new hampshire
 
Join Date: Jul 2012
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Mein Auto: BMW 740i
alarm

Am I am I missing something, I started a thread on my ALARM system malfunction, but can`t find any replies to it. Am I looking in the wrong place? Maybe I am saying it wrong. It`s about the alarm horn causing a huge electrical draw down on my battery I want to fix it so I don`t have to unhook the battery every night, but I don`t know what to do.
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  #3  
Old 02-04-2013, 01:31 PM
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QSilver7 QSilver7 is offline
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Location: Northeast Indiana
 
Join Date: Aug 2008
Posts: 5,863
Mein Auto: 1997 740iL / 2006 X5 4.4
More details about your e38 would help us help you better. Not all e38s are equipped the same from 1995-2001...and the alarm siren is one of those things that changed.

Consider creating a signature (click the USER CP link at top of page) that has your e38s model/model year/build date...again, this will go a long way in helping us to help you better.
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Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
(SOLD)
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

http://imageshack.com/scaled/grid240/822/e38e532ndsigpic.jpg
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  #4  
Old 02-04-2013, 08:10 PM
eal757 eal757 is offline
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Location: new hampshire
 
Join Date: Jul 2012
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Mein Auto: BMW 740i
alarm

I ;don`t know what more I can tell you, except maybe that it is a 95, 740i. I don`t care about the alarm, I just want to keep from jump starting it all the time. I would think that because of the power it is pulling that it must have a relay somewhere. I just want to take it off line forever. Thank you for your response. The Buckster
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  #5  
Old 02-06-2013, 06:17 AM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
Join Date: Aug 2012
Posts: 2,311
Mein Auto: E23;E30;E38;E32;E34 +
Pull the wires off the horn and insulate them.
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  #6  
Old 02-06-2013, 06:37 AM
eal757 eal757 is offline
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Location: new hampshire
 
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Thank you: I had hoped that that is all I have to do. Is there a relay r fuse that controls the horn? I will be getting at it today.
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  #7  
Old 02-06-2013, 05:21 PM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
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Mein Auto: E23;E30;E38;E32;E34 +
Probably. It depends if you are talking about a factory part of the car or some after market unit.
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Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
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  #8  
Old 02-06-2013, 08:17 PM
eal757 eal757 is offline
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Location: new hampshire
 
Join Date: Jul 2012
Posts: 39
Mein Auto: BMW 740i
alarm

I have no aftermarket stuff on thiis car. It`s all factory. I disarmed the alarm horn today, and the clicking went away, but I am still getting sparks from the neg terminal. I tried to run a circuit test with a test light, but found nothing. However, I could not get at the fuses under the seat. I am waiting to see how far the battery goes down tonight. I don`t have a clue what to do next with out spending a ton of money.
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