What causes the alarm of an old Mazda 6 to go off for no reason?

[McGage]

The reasons why the alarm of an old Mazda 6 goes off for no reason are as follows: 1. The sensitivity of the anti-theft device is too high, causing the device to sound the alarm with even the slightest vibration. Solution: First, locate the main unit of the anti-theft device, which is usually under the steering wheel or inside the panel below the A-pillar. Then, slightly adjust the sensitivity knob, but be careful not to set it too low, as this would significantly reduce the car's anti-theft effectiveness. 2. There may be an issue with the wiring of the anti-theft device's main unit, requiring timely inspection, repair, or replacement. However, whether it's checking the wiring or replacing the alarm, it's best to leave it to professionals. Improper installation or reversed wiring could result in the anti-theft device not working properly or, in severe cases, damage to the car's internal components.