How to Replace the Battery in a Keyless Start Car Key When It's Dead?
2 Answers
The steps to replace the battery in a keyless start car key are: 1. Identify the battery model used in your car key; 2. Press the key symbol button on the side of the car key; 3. Remove the mechanical key from the car key, insert a flat-head screwdriver into the 'open' position, and pry open the car key; 4. Open the car key and locate the battery compartment; 5. Replace the battery. The functions of a car key include: 1. Remotely locking and unlocking the car doors; 2. Pressing the red horn-shaped button on the car key to locate the car or send a distress signal; 3. Holding down the lock button on the remote key after turning off the engine to close the windows; 4. Holding down the trunk unlock button to automatically pop open the trunk.
I once encountered a dead battery in my push-to-start car key when I was in a hurry to leave, which almost caused me to miss an important event. Later, I learned to replace the battery myself, and it's quite simple. Find the tiny gap along the edge of the key, gently pry open the casing with a small flathead screwdriver or a coin, and you'll see the battery. When removing the old battery, note the model number clearly—usually CR2032 or CR2025—and don't mix up the orientation. Replace it with a new battery of the same type, securely close the casing, and test the functionality. Before replacing the battery, it's best to keep a mechanical key as an emergency backup. Check the battery every six months to avoid sudden power failure. Batteries can be purchased online or at supermarkets, and keeping a few extras in the car is very convenient. Here's a handy tip: when the key's light starts flashing weakly, it's a sign that the battery is running low—replace it in advance to save trouble.
