The battery in your Hyundai Palisade key fob lasts three to four years, then needs replacing
Your Palisade key fob uses a coin-cell battery, usually a CR2032, that you can swap yourself in about two minutes. The fob does not need to go to a dealer — you can buy the replacement battery at any pharmacy, grocery store, or hardware store for two to five dollars. The whole job requires only the new battery and something thin and flat to pry the fob open, like a coin or a plastic spoon.
When the battery dies, the fob stops locking and unlocking your doors and trunk from a distance, though your physical key still works. Some Palisades show a low-battery warning on the dashboard before the fob stops working entirely, giving you time to grab a replacement before you are locked out.
Key Takeaways
- Hyundai Palisade key fobs use CR2032 coin-cell batteries that cost two to five dollars and are sold at pharmacies and grocery stores.
- You open the fob by inserting a coin or flat tool into the slot on the edge and twisting gently until the two halves separate.
- The battery sits in a small metal holder and lifts straight out; note which side faces up before you remove it so you can install the new one the same way.
- After you insert the new battery, snap the fob halves back together and test the lock and unlock buttons before you put it away.
What battery type your Palisade key fob uses
Most Hyundai Palisades from 2020 onward use a CR2032 battery. If you own an older model or a different trim, check the battery compartment inside the fob itself — the battery type is printed on the metal holder. You can also look in your owner's manual or call your Hyundai dealer with your vehicle identification number (VIN) to confirm, though this takes longer than just opening the fob and looking.
CR2032 batteries are the most common coin-cell size and are stocked everywhere: CVS, Walgreens, Walmart, Target, Amazon, and most hardware stores. A pack of two or four costs between two and eight dollars depending on the brand. Name brands like Duracell and Energizer last the same length of time as store brands, so price is the main difference.
How to open the key fob without damaging it
Look at the edge of your fob for a thin slot or seam running around the perimeter. This is where the two halves of the plastic case meet. Insert a coin (a penny or dime works well) or a flat plastic tool into the slot, positioning it so the edge of the coin sits in the groove.
Turn the coin slowly and gently, as if you were opening a battery compartment on a toy or remote control. You will feel slight resistance, then the two halves will begin to separate. Do not force it — if it is not moving, you may have the coin in the wrong spot. Once the halves are loose enough, use your fingers to pull them apart the rest of the way. The two pieces are held together by friction, not screws, so they come apart easily once you have broken the seal.
Removing and replacing the old battery
Inside the fob you will see a small metal holder with a round battery sitting in it. The battery is not glued down — it straightforward rests in the holder. Before you touch it, note which side is facing up. The side marked with a plus sign (+) or a flat surface should be facing toward you; the minus side (−) or domed side faces away.
Lift the battery straight out of the holder. If it is stuck, use your fingernail or a plastic tool to gently pry it up from the edge. Drop the new battery into the holder with the same side facing up as the old one. The battery should sit flat and level in the holder with no gaps. If it rocks or sits crooked, remove it and flip it over — you may have installed it upside down.
Closing the fob and testing it
Line up the two halves of the fob so the seams match. Press them together firmly until you hear or feel a click. The fob should be snug with no gaps between the halves. If there are gaps, open it again and make sure the battery is sitting flat in its holder — a battery that is not seated properly can prevent the case from closing completely.
Once the fob is closed, press the lock button and listen for the sound of your Palisade locking. Walk to your vehicle and press the unlock button to confirm the doors open. If the fob does not work, open it again and check that the battery is installed with the correct side facing up. If you installed it backwards, flip it and try again. If the fob still does not work after you have confirmed the battery is correct and properly seated, the fob itself may be damaged and you will need a replacement from your Hyundai dealer.
When to replace the battery before it dies completely
Most CR2032 batteries last three to four years in a key fob, though this varies based on how often you use the fob. If you press the buttons dozens of times a day, the battery will drain faster than if you use it only a few times a week. Some Palisades display a low-battery warning on the instrument cluster or infotainment screen when the battery is running low, giving you a week or two to replace it before the fob stops working.
If your fob starts to feel sluggish — the doors lock or unlock more slowly than usual, or you have to press the button twice to get a response — the battery is likely weakening. This is a good time to replace it, before you are stranded with a dead fob. Keeping a spare CR2032 battery in your glove box or at home means you can swap it in when ready if the fob dies while you are away from home.
Frequently Asked Questions
Can I use a different battery size if I cannot find a CR2032?
No. Using a different size battery can damage the fob or cause it to malfunction. CR2032 batteries are inexpensive and widely available, so you should be able to find one within a day or two. If your local stores are out of stock, order one online — most arrive within two business days.
What do I do with the old battery?
Most pharmacies and retailers that sell batteries also collect used batteries for recycling. Take the old battery to CVS, Walgreens, Best Buy, or your local waste management facility. Do not throw it in the trash — batteries contain materials that can harm the environment if they end up in a landfill.
Will replacing the battery erase my fob's programming?
No. The battery powers the fob's transmitter but does not store the programming code. Your fob will work exactly as it did before once you install the new battery. You do not need to reprogram it or take it to a dealer.
How do I know if the problem is the battery or the fob itself?
If the fob does not work after you have installed a new battery and confirmed it is seated correctly with the right side facing up, the fob's internal circuitry is likely damaged. Try the fob in bright sunlight — sometimes a weak signal is easier to detect outdoors. If it still does not work, contact your Hyundai dealer for a replacement fob.