Triggering The Alarm
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2014 Volvo XC90, 2013 Volvo XC90, 2012 Volvo XC90, 2011 Volvo XC90, and 2010 Volvo XC90. However, it is still accessible from the selected car via links, so may be relevant.
If the alarm is in active mode and the rear electronic module (REM) receives an indication from a directly connected sensor or the upper electronic module (UEM), a so-called alarm cycle will be initiated. The rear electronic module (REM) or Upper Electronic Module (UEM) sends a command to the siren for it to activate. At the same time, the rear electronic module (REM) sends a direction indicator lamp activation command to the central electronic module (CEM). The siren sounds for a period of approximately 25 seconds and then stops. The light signal will continue for an additional 4.5 minutes. The function for alarm redeployment (if for example, a door is still open) is market dependent.