Alarm issue 06 taco

So at 3 am i hear my alarm go off, nothing tuched my truck but the horn started beeping. Then this am it happend again? Anyone have this problem.?

 

About 1 yr. after I bought my '06 the same thing happened to me.
I only way I could stop it was to pull the fuse.
I brought it to the Dealership, 3 times, they said they could not find the problem.
(It's like going to the Dentist when you don't have the toothache)
Until the last time I pulled into their bay and the the horn went off in front of the whole service staff.
They kept the truck for 4 days, even had a tech come from Toyota.
They replaced the wiring in the steering column.
Haven't had a problem since.
But the horn does not work, when I hit the button on the remote.
Guess it's better then having it go off at 3am in my driveway.