My alarm on my 98' montero sport keeps randomly going off. Mostly at night and when it is cold outside. I have tried taking the fuse for the horn, but, this did not work. I have also tried keeping my doors unlocked all night long. This did not work either. Tonight I am disconnecting my battery. This has been going on for a few months now. Please help!!!

You need to determine if it's the horn or the alarm. My Montero (not Sport) had 3 horns. All 3 of which go off w/ the Alarm, but only one is connected to the horn on the steering wheel. I could not make mine go off w/o pulling the relay under the hood.

My spring was bad in the steering wheel. I was able to bypass the wire using instructions that I actually found on a Mitsubishi Forum. Link below:

http://mitsubishiforum.com/forum/mitsubishi-montero-montero-sport-14/horn-wouldnt-stop-2003-montero-limited-how-i-fixed-37779/

or

http://www.pajero.guru/how-to-fix-pajero-stuck-horn-problem-step-by-step-guide/

air in power steering of my 2007 ford taurus

If it is the horn that keeps going off, pull the horn fuse, that should stop it till you figure the problem. The bcm can ground the control side of horn relay as well as the horn switch. I'm not saying the bcm is faulty, I don't know, at the moment.

I just replaced both horns on my 98. I lot of dirt roads and mud can foul them up....went to parts store and spent about 40 and replaced both

open the hood and locate the horn.., it will have 2 wires connected.., disconnect any one of them and horn will stop working.... this is just a work around.., u can also locate the fuse box and remove the fuse for the horn., and that will do.

Is the alarm causing the horn to honk? If so, you need to figure out what is causing the alarm to trigger, which could be any number of things.
Or, the panic module could be failing.
It is least likely to be the horn ring unless the only way you can get the horn to stop is by "beating the horn button on the steering wheel".

If it is, then you can replace the parts for the horn button, but you will need to get an assembly manual for the vehicle. Be sure to disconnect the battery before attempting to remove the airbag module. If it goes off, then you risk injury, and, they are not cheap to replace.

in my 98 montero sport the horn relay is next to the power steering resivour. As you look at the engine far left side a little black square. Just changed mine cause it went out

Just changed my horns on my 98 Montero Sport and come to find out it was the horn relay. The horn relay is located near your power steering resivour its a small black square you will see some electrical lines running to it. Give it a couple taps and then try out your horn again. If that dosnt work your horns are located right behind your turn signals on your front bumper, they are circluar 3in and golden colored. You can get dealer ship replacement horns for 30 plus dollars or go to a autozone or advance auto and get aftermarket ones

Removing airbag: disconnect battery for 30 minutes before proceeding -- sounds like you know the rest -- just proceed carefully. If the airbag didn't deploy when you punched it, you're not going to set it off easing it out.

Just voluntarily fire the alarm off yourself each nite before you go to bed. Just hit the horn alarm button and let it blow once and hit it again to stop it. If you do this each nite it won't go off in the middle of the nite.