
The method to turn off a car alarm is: 1. Locate the wiring distribution of the anti-theft system under the steering wheel and inside the protective panel below the A-pillar; 2. Disconnect the input wire of the alarm. The functions of a car alarm are: 1. Utilizing the mobile communication network to activate the anti-theft function when the vehicle enters the locked state; 2. When an external force strikes the vehicle or the sensor detects vibrations within the alarm range, the alarm will sound. The working principle of a car alarm is: When the car is hit, impacted, or moved, the sensor sends a signal to the controller indicating the vibration intensity. Based on the vibration intensity, the controller will emit a warning sound or trigger a full alarm.

The alarm on my old car went off randomly last week, which really freaked me out at the time. It took several attempts before I figured out that I needed to press and hold the unlock button on the remote key for three seconds, and the alarm would stop with a beep. If the car key runs out of battery, don't panic—just use the mechanical key to turn the door lock, and when you hear two beeps, it means the alarm has stopped. A friend who owns a repair shop also taught me a trick: if the alarm malfunctions, open the hood, disconnect the negative battery cable, wait about half a minute, and then reconnect it to reset the system. However, this method might reset your radio presets, so it's best used as an occasional emergency fix. Most importantly, don’t let the neighbors mistake it for a car theft—if the alarm is accidentally triggered, check immediately to make sure all doors and the trunk are properly closed.

I remember when I first got my new car and the alarm went off, my first instinct was to look for the manual. Actually, most cars nowadays are quite smart. Just insert the key into the ignition, turn it halfway to the power-on position, and the system will automatically deactivate the alarm. Some high-end models even have a small alarm system switch button hidden on the left side of the steering wheel—just reach out and feel for it. If the alarm frequently goes off by mistake during long-term parking, you can ask the dealership to lower the alarm sensitivity. Once, I forgot to close the sunroof, and the rain triggered the alarm. Since then, I’ve made it a habit to glance at the door status display on the central screen before parking. After all, frequent false alarms can be quite annoying. It’s a good idea to have the technician check the anti-theft system wiring for any signs of aging during regular maintenance.

Last time I helped my neighbor with their car alarm issue, I discovered a little trick: the way to deactivate alarms really varies by brand. For Japanese cars, usually pressing the remote unlock button twice does the trick, while German cars require unlocking first and then opening the driver's door to fully deactivate. If the remote is temporarily out of battery, using the mechanical key to unlock the driver's door and immediately starting the ignition is also a solution. In older neighborhoods, stray cats often jump onto the hood and trigger the vibration sensor alarm. In such cases, you need to open the car window and wait about ten seconds for the system to automatically go into sleep mode. Also, when the roof light is flashing, avoid forcibly opening the car door as it can easily trigger a secondary alarm. Temporarily cutting the power is quick but risky; a friend at the repair shop mentioned that improper battery removal might blow a fuse.


