Diyvehiclerepair
The alarm that goes off when you use the key will deactivate when you put the key in the ignition and turn it because the key has an RF chip, which is read by the car when the key is put in the ignition (the range on that is very very short) and confirms that the key is legitimate and thus deactivates the alarm.
What triggers a car alarm to go off?
The most basic alarms use a single voltage sensor to determine when a theft or break-in attempt is being made. This sensor monitors the static voltage of the car's electrical system and triggers the alarm when it senses a drop in voltage, such as when a door or trunk is opened and the interior lights go on.
How do you stop a car alarm from going off with a key?
Use Your Key and Both Lock And Unlock The Driver's Side Door
Locking and unlocking the driver's side door can reset the switch and cause the alarm to cease. If the driver's side door doesn't work, try the passenger door. Further, try turning your vehicle on as well.
