Wondering what to do about this: the alarm in my 2002 Xterra goes off several times a night, waking up the house. It doesn't seem to matter if its locked, unlocked, with key or fob. I pulled the security system relay, made no difference. Help! we are exhausted.

Brad

Sounds like an aftermarket alarm. Look for an out of place black box under the dash, and a similar "horn" under the hood.

Jeff!

Most of the time when you use the key fob to lock and unlock the car your door sensor don't properly work after few months.Than you have to face these problem and your alarm set off after you lock the door.

Nope, the fobs work fine for years let alone for months, and there's no reason to use the key for that reason if you don't want to.

This is your second post saying the same thing...you sound like a spammer.