Car Alarms: Alarm system, lincoln continental, body control module

Question
-------------------------
Followup To
Question -
I have a 2001 Lincoln Continental.  I went out of town and left it for 10 days in airport parking.  I left radar detector plugged in and upon return car battery was dead.  Car was jumped and everything seemed fine.  Four weeks later alarm system starts going off at night (only) and very intermittently - once a week, then nothing, then twice in a night, then the next night, then nothing.  No animals present.  I got to thinking maybe alarm was what made battery go dead?  But it should have an auto shutoff? How do I debug this w/o dealership costing me a fortune because they know less than me?  Service Manager said he didn't know of this happening often.  I tried doors, hood etc with system on and I cannot set it off so I don't think it is a sensor issue.
Answer -
The trouble for me here is is this the factory alarm,
or do you have an aftermarket system in there? If
it's the OEM factory system, the problem is one
that Lincoln needs to sort out. It would be in
the body control computer from Ford.
It's not something we can just "repair" if not
a dealer/repair facility.

If however it's an aftermarket system,
we can try to sort it out. My first guess though here
is that you are infact dealing with the factory alarm.
Please describe what happens when the alarm does trigger.

Are the headlights flashing, car horn going off? Or
is it the parking lights and a siren going off?

This should help me figure it out.

It is a factory system and the lights blink and the horn goes off.

ALARMTEK.

Answer
Yeah, bad news there. It's the Lincoln
factory system, the body control module and
the alternator system involved in
the surges, or "spike" of the triggers
set up in the factory system.

Cheapest would be to start with replacing
the battery with a new one now, and document
the times (if any) that the system falses.
If no falsing or out of the ordinary
triggers happen now, then it was a simple fix.
The next option if it continuse is the
power distribution system in the Lincoln that
needs to be reviewed. These alarm
systems depend on the power system in the
car to be correct. If the alternator is bad,
these "spikes" can set off the alarm. Last option
is to replace the body control module computer,
and now were talking money.

Go to the dealer and place it on the
diagnostic to try to pin point exactly what,
where, how, and why.

Sorry about the bad news, but at least it points
you in the right direction.

Good luck with it.

ALARMTEK