lol, reminds me of being under the car and my daughter pushing the horn,
whammo, sore head

Silly question, but do you keep your keys (with the fob) in your pocket when
you leave the car?  I've had mine in my pocket a few times, and been leaning
in the right direction or whatever to set off the alarm... once as I was
crawling under the car!  My forehead will forever have the imprint of my oil
pan thanks to that one.

My 1997 Nissan Quest has starting -- intermittently -- locking the
doors on it's own.

I'll walk away from the unlocked van and come back later and sometimes
it will have locked itself up. Sometimes all doors, sometimes only a
couple.

I live in the remote woods, no one else around. I've never used the key
fob remote that came with the vehicle.

And the vehicle -- at least from what I can read in the owners manual
-- does not seem to have an "auto lock" function that can be programmed
into the factory installed alarm.

Any thoughts?