Car Alarms: alarm trouble, fcc id number, keyless entry system

Question
any help would be appreciated here.

 i recently got an '01 nissan frontier.its installed with a factory alarm,and had been working tip top until a couple nights ago.
when i pressed the "unlock" the alarm started wailing.after it stopped ,i did the same thing and again it sirened.so i left it,came home the next day pressed "unlock" and it disarmed fine .i used it all day with no problem,but when i had to leave to work last night once again "unlock"sent the alarm blasting,and today its fine again.
i cant help but think tonight it will happen again.

any ideas or thoughts would really help.thanks

Answer
Intermittent range and performance usually means
that the system has a circuit damaged, or that the
eprom in the brain is not getting the signal.
I assume that you've changed the battery in the remote,
and discounted that as an issue right?

Also, If this is an aftermarket alarm/keyless entry
system ("sirened") Then it can be a bad relay,
remote, or brain box. You will need to identify
the alarm by the FCC ID number at www.keylessride.com
or www.remotesunlimited.com  and then trouble shoot.
ie: reposition the antenna, check all connection points
etc...

If any of this helps, let me know, but to tell
you the exact reason why you are experiencing what
you are at the moment, would mean I would need
to inspect it first hand. Short of that, and if all else
fails, it's back up to the Nissan shop for some
imput on they're system.

Good luck.

ALARMTEK