Activating The Alarm Operation Of The Vehicle Security System

WARNING: This page is about a different car, the 2016 Infiniti QX70. However, it is still accessible from the selected car via links, so may be relevant.

Check that the system is in the armed phase. (The security indicator lamp blinks every 2.4 seconds.)

When the following operation 1 or 2 is performed, the system sounds the horns and blinks the headlamps for about 50 seconds.

Back door or any door is opened during the armed phase.
Disconnecting and connecting the battery connector before canceling the armed phase.