Holding the alarm or panic button for 2–3 seconds manually triggers the siren, which is useful for locating your car in a crowded lot or deterring suspicious activity.

Many systems allow "silent arming" (lights only, no siren beep) by pressing a specific button sequence, such as a "struck-through speaker" icon.

This guide provides an overview of common car alarm functions and maintenance tips to help you get the most out of your security system.

For specific wiring diagrams or programming steps for your model, consult a professional service or resources like the AutoSiga Technical Archive . Universal Car Alarm System Manual | PDF - Scribd

This disables the alarm functions while leaving central locking active, which is ideal when leaving your car for service. It is often activated by turning the ignition and holding a "Valet" button for several seconds until the status LED stays solid. Installation & Setup Tips

Avoid setting sensors to maximum sensitivity, as wind or heavy rain can cause frequent false alarms.

Opens the trunk remotely (may require holding for 2 seconds).