Car Alarms: activation of alarm ,perimeter alarm, lincoln town car, perimeter alarm

Question
2003 Lincoln town car, the perimeter goes off for no apparent reason when it is put on. Can be anywhere, will not go off when it is in garage and is on. No apparent pattern, it is a factory installed perimeter alarm system. Car is like new and very well maintained, 50,000 miles,help, thank you Dale Spersrud

Answer
Please be more descriptive if possible.

"GOING OFF?"

I need to determine whether it's a factory alarm
issue or, if it's an aftermarket system you are
dealing with.

Is it: Headlights flashing, car horn honking
and a worded SECURITY" light in the dash flashing?
(doubtfull since none of the notes show this
car as having a factory alarm system)=FACTORY

Or,

is it: flashing parking lights,
an LED in the dash area, and a siren
going off?= AFTER MARKET

Let me know more on this to better
advise you on a course of action
to take.

Best Regards,

Robert Martin
CEO/ALARMTEK
CARALARMMAN.com