An alarm that is not working as expected and keeps going off by itself can be a nuisance. A malfunctioning alarm puts your car in danger of being stolen or being damaged by vandals. Credible car alarm manufacturers have an anti-theft option available in case your alarm fails. The bad news about alarms is that like any other car component; they too need repairs. I have come up with steps that will guide you on what to do when your car alarm goes off without a trigger.