Is your Hyundai Elantra key fob becoming less responsive? Do you have to press the buttons multiple times to lock or unlock your doors? It might be time for a battery replacement. Fortunately, changing the battery in your Hyundai Elantra key fob is a straightforward process that you can easily do yourself at home. This guide will walk you through each step, ensuring you can quickly get your key fob working like new again.
Before we dive into the battery replacement, let’s briefly understand how your Hyundai Elantra’s alarm system interacts with your key fob. According to the owner’s manual, the alarm system is designed to activate in specific situations when the car is parked and armed. These situations include:
- Opening a front or rear door without using the key fob transmitter or the ignition key.
- Opening the trunk lid or tailgate without using the transmitter or the ignition key.
- Opening the hood.
When triggered, the alarm will sound, and the turn signal lights will blink for about 30 seconds, repeating up to three times. To disarm the system, you can use either your key fob transmitter or the ignition key in the door. It’s worth noting that while the manual suggests using the ignition key in the door will disarm the alarm, starting the car with the ignition key should also silence any alarm activation.
Now, let’s focus on replacing the battery in your Hyundai Elantra key fob. When the battery is low, you might notice that the LED indicator on your key fob doesn’t light up, or you need to press the buttons several times for them to work. The good news is that you won’t need to reprogram your remote after a battery change, unlike some other car brands.
Here’s how to replace the battery:
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Identify the Battery Type: The battery you’ll need is a CR2032. This common button cell battery is widely available at most drugstores, supermarkets, and online retailers.
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Prepare Your Tools: You will need a small blade screwdriver.
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Open the Key Fob Casing: Carefully inspect your key fob. You’ll notice a small slot or seam designed for opening the case. As illustrated in the image below, use the blade screwdriver to gently pry open the case. Insert the screwdriver into the slot and twist gently to separate the two halves of the key fob. Be careful not to apply excessive force to avoid damaging the casing.
- Remove the Old Battery: Once the case is open, you’ll see the battery. Take note of the battery’s polarity – observe which side is facing up (+ or positive side). Carefully remove the old battery. You might be able to gently pry it out with your fingertip or the edge of the screwdriver if needed.
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Insert the New Battery: Take your new CR2032 battery and ensure you insert it with the correct polarity. The positive (+) side should be facing down, just like the old battery. Place the new battery into the battery compartment.
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Close the Key Fob Casing: Carefully align the two halves of the key fob casing and press them firmly together until they snap back into place. Ensure the case is securely closed.
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Test Your Key Fob: Press the buttons on your key fob to lock and unlock your Hyundai Elantra. The doors should respond immediately, and the LED indicator should light up when you press a button.
Congratulations! You’ve successfully replaced the battery in your Hyundai Elantra key fob. This simple maintenance task can save you time and the potential cost of a dealership visit. Enjoy the convenience of a responsive and reliable key fob once again.
