How to Replace the Battery in a Hyundai Elantra Car Key?
3 Answers
Steps to replace the battery in a Hyundai Elantra car key: 1. First, use a screwdriver to remove the remote cover. 2. Gently remove the key blade. 3. Insert the screwdriver into the hole indicated by arrow 1 and turn it clockwise as shown to completely separate the two parts of the remote. 4. After opening, remove the battery and detach the circuit board. 5. Finally, replace with a new battery and reassemble in the reverse order of disassembly. Below are the functions of the remote key: 1. Vehicle locator. There is a button on the remote key with a horn symbol; pressing it will trigger the car alarm, effective at a distance of over 40 meters, but use with caution in residential areas or late at night. 2. One-touch window closing. Press and hold the lock button on the remote to automatically close the windows. 3. Automatic trunk opening. Press and hold the trunk unlock button or press it twice in succession to automatically open the trunk.
I've been driving a Hyundai Elantra for over three years, and changing the key fob battery several times has been quite convenient. There are generally two types of keys: folding keys and smart keys, with the Elantra commonly using the small button-style fob. Prepare a new CR2032 battery—buy a reputable brand like Panasonic or Duracell from supermarkets or online for better durability. Wash your hands before replacing the battery to prevent static electricity. Locate the seam on the back of the key, then gently pry open the casing using a small flathead screwdriver or a stiff card, being careful not to apply too much force to avoid cracking the plastic. Remove the old battery, noting its orientation (the positive side usually has a + symbol facing upward). Insert the new battery, align it with the slot, and press the cover until you hear a click. Finally, test the remote lock and unlock buttons—if they work, you're all set. Doing it yourself saves 40-50 yuan in repair costs and prevents accidental damage to the circuitry. It's recommended to check the battery every two years to extend its lifespan.
Hey bro, running out of battery in your Elantra key is super annoying, but changing it yourself is a piece of cake. Hold the key steady and look for a small notch on the side—use a hairpin or coin to pry open the case, being careful not to damage the internal chip. The old battery is a common CR2032; avoid cheap knockoffs and go for genuine ones. When removing it, note the positive and negative positions so you don’t install the new battery backward. Snap the cover back on, squeeze it tight, and test the unlock button. If it doesn’t work, the battery might not be seated properly—just redo it. The whole process takes five minutes tops, saving you a trip to the shop. Grab a few spare batteries to keep in your car for emergencies. Pro tip: If your key got wet or dropped and still acts up after a battery swap, it might have contact issues and need repair.
