Car Alarms: 1989 BMW 525i, prestige alarm, bmw 525i

Question
I have a after market Prestige alarm system in this car and recently my Battery went dead
and since then the car self arm itself but I don`t want it to, can you tell me how to disarm it please....Thanks.  

Answer
No you'd need the manual for the system
( www.audiovox.com ) to toggle between
active and passive arming. (you want active)

But since all systems are different, you
will need the proper manual & procedure.

See if you can locate it at the parent company
Audiovox.

Good luck.

ALARMTEK