How to Replace the Key Fob Battery for the Elantra?
2 Answers
Here are the detailed steps to replace the key fob battery for the Elantra: 1. Prepare a small knife or flat-head screwdriver and a CR2032 coin cell battery. 2. Remove the mechanical key from inside the key fob. 3. Turn the key fob over and unscrew it. 4. Use the small knife or flat-head screwdriver to pry open the green chip. 5. After opening the chip, you will see the coin cell battery. Remove the old battery and replace it with the new one. 6. Reassemble the key fob by 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.
When my Elantra key fob stopped responding, I realized it needed a battery replacement. The first step is to locate the small seam or latch on the back of the key, usually requiring a small screwdriver or thin coin to gently pry open the casing. Be careful not to apply too much force to avoid scratching the plastic. After opening, remove the old battery, remembering it's a CR2032 coin cell readily available at convenience stores. Check the polarity of the new battery, install it with the convex side facing up, and press it firmly into place. Reassemble the casing and test the buttons to see if the indicator light illuminates. The process isn't difficult—I was a bit nervous during my first attempt, but it became straightforward with practice. As a side note, key fob batteries typically last one to two years, so it's wise to carry a spare for emergencies. I've also heard it's best to avoid operating in humid environments to prevent electrostatic damage to the circuitry. If a malfunction occurs, a visit to the 4S dealership for repairs might be necessary. Safety first—DIY saves both time and money.
