If your car alarm is going off for no reason, it may be time to disable it permanently. Here's how to do it:
First, locate the fuse box in your vehicle. It should be somewhere near the battery. Once you've found it, look for a fuse labeled ALARM or CAR ALARM. If you can't find one labeled specifically for the alarm, try pulling all of the fuses one by one until the alarm stops going off.
Once you've found the right fuse, pull it out and examine it. If it looks burnt or damaged in any way, replace it with a new one of the same amperage. If the fuse looks fine, put it back in and turn on your car. The alarm should now be disabled.
If you can't find a fuse labeled for the alarm or if pulling all of the fuses doesn't work, there's another way to disable the alarm. Locate the wires that connect the alarm to the battery and cut them. This will permanently disable your car alarm, but it's also a good idea to disconnect any other electrical components from the battery before cutting the wires so you don't accidentally damage anything else.