1999 Subaru Impreza Owner's Manual - Page 47

J Security system operation IMPORTANT Security System and Keyless Entry Features Do Not Operate when the Vehicle Ignition is on. B Arming the system HS1000DB To arm the system, close all doors, then press the "LOCK" button. The siren will "chirp" twice and the parking lights will flash twice, indicating the system is armed. The doors will also lock at this time. The status indicator will blink steadily, once per second. If the siren chirps and/or the parking lights flash only once, this indicates that the system is in pre-arm mode. The system has detected that a protected entrance is not secured. In pre-arm mode, the status indicator stays on and does not blink. Check to see that all vehicle entrances are closed securely. Once all entrances are secured, the system will chirp/flash again, and the status indicator will blink steadily. The system is now fully armed. 1-16