For many people, there is nothing more annoying than a car alarm that goes off when you least expect it. For some, this is even worse than a horror movie scare. There are even car alarms that go off randomly in the middle of the night, annoying not only car owners, but everyone else on the block as well. However, most of the time, these are just false alarms. There really is no danger lurking. However, what you need to worry about is how to prevent these false alarms from happening again.
How car alarms work
Under normal circumstances, a car alarm would go off if it detects an “intrusion” above its normal threshold. All of this is possible thanks to the crash sensors that are included in most modern vehicles. This could be caused by a loud sound or something hitting the car with considerable force. Car alarms also go off when a person tries to enter the vehicle. This alerts the owner of the serious crime that is occurring. It also helps deter a potential thief from continuing their dirty and illegal work. You can even install switches on the hood, trunk, or doors of your car. If a switch is activated, for example if a door is opened, the alarm will sound.
The most basic car alarms use voltage sensors to activate themselves. If these sensors see a sudden drop in voltage, for example when a door is opened or lights are turned on, the alarm will sound. You can also manually turn on your car alarm by pressing a button on the key fob. This could help when you are trying to stop someone who is playing with your car or when you are trying to search for your car in a huge parking lot. You can then deactivate the alarm with another press of a button.
A malfunctioning keychain
Now that we’ve learned what triggers a car alarm under normal circumstances, let’s now talk about why some alarms go off at random times. The first and one of the most common reasons for an abnormal car alarm to go off is a malfunctioning key fob. We’ve already covered this keychain-sized device earlier in this article. For those who are not yet familiar with it, it is the device that allows you to lock or unlock your car door with the push of a button. For newer cars, having the key fob inside is what allows drivers to start the ignition.
If your key fob is not working properly, it can send an incorrect signal to your vehicle. Sometimes you can even send this signal without pressing a button. These wrong signals are what can cause your car alarm to go off for no reason. The fastest way to fix this problem is to change the batteries in the keychain. If that doesn’t solve it, you can try resetting the device or use a code reader to find out what’s wrong.
A dead or rusted battery
Problems with the car battery can also cause the car alarm to go off without the slightest warning. The first way a car battery can cause this kind of problem is if there isn’t enough power left in it. You may not know this, but car alarms weren’t made for the sole purpose of alerting us to an accident or attempted theft. Car alarms can also indicate other problems in your beloved car. One of these problems is low battery power or energy, which is not enough for the starter motor to start the engine, run properly, and get you where you need to be.
In some cars, if you try to start the engine with a dead battery, the alarm will go off. Be sure to check your car’s battery level with a voltmeter if the alarm goes off for no apparent reason. If your car battery reads less than 12.6 volts, then it’s time to buy a new one. It would be wiser to get a new car battery instead of waiting for your car to die in the middle of the road while driving.
There is no need to worry if your car battery is running low. It is quite easy to get a new one nowadays. Some stores and auto shops even offer delivery services where someone delivers a new battery wherever you need it, even on holidays or in the dead of night. This is especially useful in emergency situations. If you don’t know how to install a car battery, …