How do you get your car alarm to stop going off?

I have a new car. The other day I drove it to the grocery store and when I tried to unlock it, the car alarm randomly started beeping. I stood there forever trying to turn it off with everyone staring at me. Eventually, I managed to turn the alarm off somehow, but it was so embarrassing. How can I turn my alarm off quickly if that happens again?

“Car alarms definitely help to protect your car, but when they malfunction the situation quickly becomes a very loud nightmare. Here are some things to try if your car alarm will not stop going off:
  • Start your car
  • Lock or unlock your doors
  • Hit the panic button
  • Open the trunk
  • Open the driver’s door
  • Remove the fuse
  • Disconnect the battery
Start your car: This may have been what you did at the grocery store. Most car alarms are designed to reset when the key is turned in the ignition or when the start button is pushed.
Lock or unlock your car: If you hit the lock or unlock button on your remote, your car alarm should automatically turn off.
Hit the panic button: This one sounds a little counterintuitive. Your alarm is already going off… but oddly, hitting the panic button on your remote should silence your alarm.
Open the trunk: Usually, using any buttons on your remote will turn off your car alarm. This includes popping your trunk.
Physically open your door: This one won’t work every time, but it’s good for certain kinds of cars. Use your key to physically unlock your driver’s side door. If the door is already unlocked, lock it and unlock it again.
Remove the fuse: If none of these things work, you might have to remove your alarm fuse. You can do this yourself by taking a look at your owner’s manual to locate your fuse box. Then, use a pair of plastic tweezers to remove the proper fuse. If this seems difficult, you can also ask your mechanic to do it.
Disconnect the battery: If all else fails and your alarm is still going off, you can disconnect the battery. This will cause a full system reboot. You’ll probably do want to call a mechanic for this one. But if you decide to do it yourself, be sure to wear gloves and eye protection.
Find your battery, then loosen the clamp on the negative terminal before removing the cable completely. After about a minute, reconnect the cable. If your car alarm continues to go off, it’s absolutely time to call your mechanic.
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Liz Jenson
Answered on Sep 30, 2021

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