
It is recommended to visit a service station for inspection. There is a special function in TECH2 that can display the cause of the anti-theft alarm and its location. The maintenance technicians at the after-sales service center will complete the inspection based on the computer data. Below is some relevant information: 1. The Buick Excelle, based on General Motors' global platform, is derived from the latest globally developed mid-size sedan by General Motors, primarily designed and developed by GM Daewoo Auto & Technology (GMDAT); 2. The Buick Excelle is positioned as an entry-level family car, featuring a dynamic exterior and high-quality interior, offering a premium experience for 'your first car'.

My Buick Excelle keeps alarming for no reason, which is really annoying. It's usually the anti-theft system being triggered by mistake, like when the vibration sensor is too sensitive on windy days. You can first check if there's any debris stuck in the door handle sensor, or repeatedly lock and unlock the car with the remote key to reset it. Sometimes loose battery terminals or unstable voltage can also cause this—try disconnecting the negative terminal for a few minutes and then reconnecting it. If that doesn't work, it might be a faulty trunk sensor; clean the contact points. I suggest avoiding parking in windy areas or on uneven surfaces to reduce false alarms. If the problem is severe, parts may need replacement—don't delay until it becomes a bigger issue. If you can't fix it yourself, take it to a reliable repair shop.

Last time, my Excelle kept alarming randomly at night, annoying the neighbors. I found out it was due to the remote control button being stuck or low battery power, and replacing the new battery solved the problem. Check if the door, hood, and trunk switches have poor contact, and manually press them a few times to see. When the alarm goes off, immediately unlock or start the car with the key, which usually stops it right away. I also found a method online: get in the car, close the door, and hold the unlock button for 10 seconds to reset the system. Regularly clean the vehicle to prevent dust from accumulating on the sensors. For prevention, try to park on level ground and avoid interfering with the wiring when installing audio equipment. If simple fixes don’t work, professional inspection is needed.

False alarms from the car security system are often caused by control module or wiring issues. Check the fuse box for security-related fuses, remove them for 10 seconds, then reinsert to reset. Inspect sensors around the vehicle body (like door sensors) for misalignment or dirt - clean and reposition them. If you've modified circuits (e.g. audio system), restoring factory settings can eliminate interference. The key is maintaining stable battery power: voltage fluctuations trigger false alarms, so ensure terminal connections are tight. For DIY checks, use a multimeter to test for short circuits, but avoid tampering if unqualified. During normal driving, avoid excessive vehicle vibration.


