Security Alarm

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

The security alarm system is armed automatically after the doors, hood, and trunk lid are closed and locked For the system to arm, the ignition switch must be in the LOCK (0) position, or the vehicle ignition in the OFF mode, with the key must be removed from the ignition switch, or the remote must be removed from the remote slot, and the driver's and passenger's MICUs must receive signals that the doors, hood, and trunk lid are closed and locked The alarm can be disarmed at any time by unlocking the driver door with the key or pressing the UNLOCK button on the transmitter, or by grabbing either the driver's or front passenger's door handle with the keyless access remote in range

When everything is closed and locked, the only inputs that are grounded, and have 0 V, are the driver's door lock knob switch (LOCK position) and the audio unit or audio-navigation unit (if equipped) In other words, all of the other switches are open, and have about 10 to 12 V, including the key cylinder switches A beep sounds and the parking lights flash to confirm the security alarm system is armed if the LOCK button is pressed a second time within 5 seconds The security indicator in the gauge control module begins to flash immediately after the vehicle is completely closed and locked, and 15 seconds later, the security system arms If the security indicator does not flash, the system is not arming

If one of the switches is misadjusted or shorted internally, or there is a short in one of the keyless/power door lock/security circuits, the security system will not arm As long as the control unit continues to receive a ground signal (0 V) except for the driver's door lock/unlock knob switch input, it senses that the vehicle is not closed and locked, and the system will not arm A switch that is slightly misadjusted can cause the alarm to sound for no apparent reason In this case, a significant change in outside air temperature, the vibration of a passing truck, or someone bumping into the vehicle could cause the alarm to sound

NOTE: There is no glass breakage or motion detection feature

If anything is opened or improperly unlocked after the system is armed, the control unit receives a ground signal from that switch, and the 10 to 12 V reference drops to 0 V If the audio unit or audio-navigation unit (if equipped) is disconnected, the input loses its ground, and the input voltage goes from 0 V to 10 to 12 V The system sounds the alarm when any of these occur

A door or the trunk lid is forced open
A door is unlocked without using the key or the transmitter
The hood is opened
The audio unit or audio-navigation unit (if equipped) is disconnected
The transmitter PANIC button is pressed

When the system sounds the alarm, the horn sounds and the exterior lights flash for 2 minutes The alarm can be stopped at anytime by unlocking the driver's door by pressing any button on the transmitter

NOTE: The security system can be customized in the multi-information display (MID) to suit the client needs For more information about keyless/security system options, refer to the Owner's manual