How to Set Up a Car Alarm to Trigger Upon Touch?

[OJoshua]

You need to install an alarm system for the vehicle and set the alarm sensitivity to the highest level. In this case, the vehicle will sound the alarm whenever it is touched. During daily use of the vehicle, this setup is highly discouraged, as even a gust of wind could trigger the alarm.

[StJanelle]

It's actually quite simple, with a few scenarios to consider. If the car comes with factory-installed anti-theft, you'll need to dig into the central control menu for security settings, like sensitivity adjustment options, and crank it up to the highest level. My neighbor set his BMW to 'sensitive mode'—even a kid kicking the wheel would set it off. For aftermarket installations, it's more flexible. You can buy a vibration sensor alarm for a few hundred bucks on Taobao and install it yourself, sticking it to the corner of the windshield. The mobile app even gives real-time alerts—last week, a delivery guy leaned against the door for a smoke, and my phone buzzed. Oh, and don't go overboard with the sensitivity. Once I set it too high, and a passing truck set off the alarm like a police siren—it was chaos.