Hyundai Elantra Alarm Keeps Going Off [Here is Why?]

Published: 09/14/22 •  7 min read

Is your Hyundai Elantra car alarm keeps going off for no reason?

It is a severe anxiety-inducing issue that nobody would like to put themselves into. The loud sound of a car alarm can be irritating and distracting, not only to you but to other people too, and you would like to fix it as quickly as possible.

There Could Be a Few Reasons Why Hyundai Elantra Alarm Keeps Going Off

If your Hyundai Elantra’s Alarm Keeps going off, then there might be a few reasons such as the drained battery, damaged key fob, corrosion in the car battery, the alarm is not installed properly, sensitive sensors, or bad weather elements.

Read more about these problems in the post below and find out how can you fix this problem with ease.

Why a Car Alarm Rings At Random?

The car alarm system is an essential component designed to safeguard your car from any criminal issues. But, not all have a clue about the underlying principle behind this alarm system.

A car alarm has four elements: a computer, a Keycode Receiver, an audio system, and various sensors. These sensors include doors sensors, shock sensors, tilt sensors, proximity sensors, and microphone sensors. If any of these sensors detect any unusual signal, it will activate the loudspeaker. Thus, if one of these sensors goes wrong, it can cause it to sound random and trigger false alarms.

There is no specific reason to explain why this car alarm keeps going off issue could occur. We will present the most typical reasons you may be experiencing this problem. Stay tuned!

Why Hyundai Elantra Alarm Keeps Going Off?

Why Hyundai Elantra Alarm Keeps Going Off?

Have you ever wondered why a car alarm is constantly sounding without any reason, and what can you do to stop it? Here are some possible causes for this to happen:

Drained Out Battery

If the car battery is not fully charged or is at a low level, it may be a reason for Hyundai car alarm keeps going off. Since it is not an unintentional issue, the alarm sounds. It is a sign for you to charge or change your car battery. So it would help if you thought about making sure that your car batteries are charged. 

Damaged Keyfob

The keyfob is used to lock or open your car door as well as to turn on your vehicle from a distance. The damaged key fob may be the primary cause behind the hyundai car alarm keeps going off. But, it is more likely to fail due to shorting-out issues, and as a result, your alarm goes off, despite having no other alarms.


The corrosion in the car batteries may cause the constant alarm in your Hyundai Elantra. The corrosion triggers the alarm signals, and alarms go off. The wiring system inside your car may malfunction, including the alarm system in your car.

Inaccurate Installation of the Alarm

If the car alarm is not correctly installed, it won’t function properly. Ensure all the alarm wirings are proper and ensure there is nothing wrong with it.

Too Sensitive Sensors

Vibration sensors or shock sensors usually activate a car alarm. When someone tries to open the vehicle’s doors forcefully or when an object happens to bump into your vehicle, the alarm will immediately go off. So it is better to perform a simple test to determine whether sensitive shock sensors are the reason that your alarm has been activated. If that is the case, you will need to reset the alarm in order to reduce the sensitivity.

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Activated Hood Latch Sensors

The next thing to look at is the hood latch sensor. Your car’s manufacturer has developed an alarm that gets activated when someone opens the hood with intent. This is to prevent burglars from taking your car battery or the car itself. If the alarm sounds, maybe someone is trying to open the hood latch.

Bad Weather Elements

In some instances, it is possible that the Hyundai Elantra alarm is constantly being activated due to bad weather conditions. It could be that there is a powerful wind that causes the alarm to sound. This is the reason you should be aware of this as you go through the effort of having your car battery changed or cleaned.

What Should You Do If Your Hyundai Elantra Alarm Keeps Going Off?

Once you have identified the reason for the alarms going off, let us now discuss the possible solutions to resolve this issue. Here are some answers.

Replace the Car Battery

If the issue is not due to your keyfob but rather your car battery, then you might need to have it replaced. The first step is to check the battery’s charge using the Voltmeter. This will help you decide whether it needs a replacement or is about to go out of service. If the voltage is 12.6 or less, you could need to purchase an entirely new battery.

Replace the Batteries in Your Keyfob.

If you have found that the alarm has been activated due to a weak battery, the simplest solution is to replace it. 

Clean Your Car Battery

If your car battery is reasonably charged, there is no need to replace it. Yet, if there is corrosion, then you will require cleaning. Clean it using a chemical cleaner specifically designed for batteries. The price should not be more than $5, and you can apply it following the product’s instructions.

A thoroughly cleaned battery can establish a secure electrical connection. It will put an end to the irritating trouble with the alarm. Meanwhile, also get the sensor of the hood latch cleaned. It’s a simple process that needs cleaning equipment, like an abrasive brake cleaner.

Might be helpful: How to Reset Battery Light on Ford F150?

Alarm Reinstallation.

If you are still experiencing issues with your car alarm, you can do one final thing is replace it. The initial cost for setting it up should be between $200 to $500. If it is not installed correctly, you can request the car manufacturer Hyundai to replace it for free.

Why Does Hyundai Tucson Alarm Keeps Going Off

One possible reason the Hyundai Tucson alarm keeps going off is because the battery is running low. If the battery is weak, it might not be able to keep the alarm circuit powered, which could cause the alarm to sound intermittently.

There are also other possible reasons why the Tucson alarm might be going off. Faulty sensors, low battery, wiring problems, and a broken key fob are all potential cause.

Enhance Your knowledge about Vehicles


How Do You Turn Off the Alarm on A Hyundai Elantra?

To deactivate the alarm on your Hyundai Elantra, press the lock button three times on the keyfob and then press the panic button. Without a keyfob, simply insert the key inside the lock for ignition and move to ‘on.’ After about 30 seconds, the alarm will turn off.

Why Is My Car Alarm Randomly Going Off?

The most typical reason the car alarm continues to go off is a drained-out battery or sensitive sensor. It could be caused by a defective hood latch sensor or the door lock sensor.

How Do I Reset My Hyundai Alarm?

Turn the key inside the ignition, moving it from ‘off’ to ‘On’ position, two times in a row. The alarm will sound chirp when the ignition is turned ‘on’ for the second time. The alarm is being reset and ready to be reprogrammed.

How Do I Permanently Disable My Car Alarm?

To disable the car alarm permanently, you should know a few simple steps. Start the car, remove the fuse, and finally disconnect the battery from the vehicle.

Closing Words

These are only a few of the most frequent items you can investigate to fix car alarm keeps going off problem. A little trial and error will assist you in finding the best setting for you. If the issue is due to a sensitive shock sensor, you could adjust it to make it less sensitive. 

If you try these suggestions, they could save you from the repair expenses, especially in cases where the problem can be solved without any professional intervention.