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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E34 (1989 - 1995)

E34 (1989 - 1995)

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  #1  
Old 01-07-2013, 03:44 AM
windgat windgat is offline
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Location: south africa
 
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Mein Auto: bmw 525i e34
Unhappy bmw 540i e34 horn and light problem

Good day my fellow bmw owners.i'm stuck and need help with my 540i
i just bought the car but it seems that someone changed the lights so when the switch is on parks in switch on mane beams as well and would like to know where to check for a relay or something.i checked the wires and fuses and at the back of switch and cant find a problem.and with the horn it is completely dead.no power to steering collum or fuse.please help
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  #2  
Old 01-07-2013, 09:43 AM
windgat windgat is offline
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Mein Auto: bmw 525i e34
is there anyway to bypass all of that.cause i see that the airbag light stays on
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  #3  
Old 01-07-2013, 10:46 AM
paperplane94 paperplane94 is offline
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Mein Auto: 1989 525i M20B25
Make sure all the fuses are OK.

Also I have a theory about your problem, but can you post a picture of your fusebox here?
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  #4  
Old 01-08-2013, 08:01 AM
windgat windgat is offline
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Mein Auto: bmw 525i e34
i found the relay but theres no power.when you remove the horn fuse and switch on the egnition and press the horn then you can here the relay on my bmw 525i e34 its the small black one at the bottom
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  #5  
Old 01-08-2013, 06:54 PM
paperplane94 paperplane94 is offline
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Mein Auto: 1989 525i M20B25
Wait, so when you switch on the parking lights(1 click up), the Main beams also come on....

Sounds like a problem with the LKM. The LKM is the biggest black box in the bottom of your first picture, it pulls out. MAybe one of the relays in your LKM is stuck on.
repairing the LKM here:
http://www.bmwe34.net/E34main/Mainte...trical/LKM.htm
http://forums.bimmerforums.com/forum...php?p=12426367

The horn problem is something else that I don't know, all I can say is check for power at the connector of the horn, which means removing stuff to get to the horn.

ALSO your #19 fuse slot looks burnt out.

ONE MORE THING. What Model Year is your 540i?
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  #6  
Old 01-09-2013, 12:32 AM
windgat windgat is offline
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1995 e34 and my 525i is 1994
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  #7  
Old 01-09-2013, 01:11 AM
paperplane94 paperplane94 is offline
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Mein Auto: 1989 525i M20B25
OK, here are the ETM books so that you can trace the light and horn circuit:
If you need help reading it, message here again.

http://wedophones.com/Manuals/BMW/19...g%20Manual.pdf
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