How to Replace the Battery in a 2015 Elantra Key?
3 Answers
The method to replace the battery in a 2015 Elantra key is as follows: 1. Hold both ends of the car key with both hands and push and pull in opposite directions to open the back cover of the key; 2. Remove the old battery and replace it with a new one of the same model; 3. Push the back cover back along one side. The 2015 Elantra is a compact car with body dimensions of 4570mm in length, 1775mm in width, 1445mm in height, and a wheelbase of 2700mm, with a curb weight of 1206kg. The 2015 Elantra features a MacPherson strut front suspension and a torsion beam rear suspension. It is equipped with a 1.6L naturally aspirated engine, delivering a maximum horsepower of 128PS, a maximum power of 93.8kW, and a maximum torque of 156Nm, paired with a 6-speed manual transmission.
I just replaced the key battery for my 2015 Elantra, which has a remote-style key. When the battery runs low, the buttons become less responsive. The steps are straightforward: First, locate the small latch on the back of the key and gently pry open the casing using a small tool like a flathead screwdriver or a credit card—avoid using too much force to prevent damaging the plastic. Inside, you’ll find a coin-cell battery, model CR2032. I bought a new one online for just a few bucks; you can simply take the old battery to a supermarket or online store to match the model. After removing the old battery, insert the new one with the positive side facing up (the side with the ‘+’ symbol outward) and press it lightly into place. Finally, align the latch and snap the key casing back together, pressing firmly until you hear a click to confirm it’s locked. Now test the buttons—the remote should respond instantly. The whole process takes less than 5 minutes, saving you the labor cost of visiting a dealership while picking up some handy DIY knowledge. A good tip: if you notice the remote’s range shortening, it’s a sign the battery is running low.
The key to replacing the battery in a 2015 Elantra key fob is careful operation to avoid damaging components. First, use a small tool like a thin bamboo skewer to locate the seam and gently pry open the key fob—the casing usually snaps shut, so once you've lifted one side slightly, it should open easily. Remove the old CR2032 battery inside, check the model to ensure compatibility, and compare the polarity markings between the old and new batteries to avoid incorrect installation (reversed polarity will disable the remote). After inserting the new battery, snap the casing back together and press firmly to ensure a dustproof seal. Test the key fob by standing near the car and pressing the unlock button to check responsiveness—I often help neighbors with this, and the results are immediate. DIY replacement is cost-effective and quick; CR2032 batteries are readily available at convenience stores. Avoid using metal tools to pry, as plastic parts can crack, and if the battery gets dirty, wipe it clean with a tissue. This method works for most remote key fobs—give it a try!
