Originally Posted by drbenz

Since this forum helped me fix the problem with my friends Montero I thought I would help help by posting some pictures of what I did.
Please realize that this is not a job for an inexperienced person to try, air bags can blow up and if you drop it it may not work when it is needed, don't cause yourself grief trying to save money. Having said that here it is:
The horn contacts are made into the air bag assembly so the steering wheel has to come off (one bolt on the left side, requires a long 8mm allen wrench), then the four rivets get drilled out. Disassemble the four pieces of the air bag to get the horn contact pad at the bottom of the assembly. You will need to carefully seperate the halves of the horn contact pad and then you can see the very small dots that should be keeping the two copper contact sheets apart. As you can see it doesn't take much movement to squash the little dots to make contact and activate the horn. A previous post mentioned using tape to maintain the seperation needed just don't cover too much of the contact area or it will be very hard to honk the horn when you are done, I cut small strips of black electrical tape and put one small piece close to the edge at the top bottom sides and one in the center. Now just put it all back together, replace the pop rivets and you are the proud owner of a repaired horn. I hope you thought to center or lock the steering wheel before you started so the wheel will be straight after it is reinstalled.