What is the specific method for replacing the key battery in the Elantra?
2 Answers
The specific method for replacing the key battery in the Elantra is: 1. Prepare a small knife or flat-head screwdriver and a CR2032 button battery; 2. Remove the mechanical key from the key fob; 3. Turn the key fob over and unscrew it; 4. Locate the green chip and pry it open using the small knife or flat-head screwdriver; 5. After opening the chip, you will see the button battery—remove the old battery and replace it with the new one; 6. Reassemble the key fob following the disassembly steps in reverse. The Elantra has dimensions of 4610mm in length, 1800mm in width, and 1450mm in height, with a wheelbase of 2700mm. In terms of power, it is equipped with a 1.6L hybrid system, with the engine delivering a maximum power of 105 horsepower and a maximum torque of 77.2 kW.
I used to change the key battery myself a few times when I drove the Hyundai Elantra, and it was quite simple. The Elantra key usually has a foldable design, with the battery compartment located at the back cover. Use a coin or a small screwdriver to gently pry open the back cover along the gap, and you'll see the button battery, typically a CR2032 model. When removing the old battery, pay attention to the polarity of the terminals—it's best to use a plastic tool to avoid scratches. When installing the new battery, make sure the positive side faces up, then press it gently into place and snap the back cover shut. After replacing, test the lock and start button functions to ensure they work properly. The battery usually lasts about a year. If your key frequently malfunctions, it's not necessarily a circuit issue—most of the time, it's just a depleted battery. Changing it yourself can save you dozens of dollars compared to dealership service fees, and the tools are readily available. However, be careful not to use too much force when prying, as the plastic parts can crack easily. Wearing gloves is safer.
