How to Replace Car Key Battery?
2 Answers
Steps to replace car key battery: 1. Press the key symbol button on the side of the car key with your left hand, and pull out the mechanical key with your right hand; 2. Locate the position marked with "open" on the end face of the car key, insert a flat-head screwdriver and pry it up and down; 3. Use the flat-head screwdriver to go around the gap surface, separating the car key into two halves; 4. Find the battery position, insert the flat-head screwdriver and pry the notch on the side of the battery; 5. Remove the old battery and replace it with a new one, making sure to check the correct orientation of the positive and negative terminals; 6. Align the two halves of the car key and press them together; 7. Reinsert the mechanical key into the car key.
The first time I changed my car key battery, I was a bit clumsy. I noticed a small gap on the back of the key, which can be gently pried open with a small screwdriver. Inside, there's a round battery, usually of the CR2032 type, available at supermarkets or online. Be careful not to damage the contacts when removing the old battery. When inserting the new battery, make sure the positive side faces up. After closing the cover, test if the car door lock works. If the key still doesn't function, the battery might be inserted the wrong way or the contacts could be dirty—just clean them with an eraser. Regular metal keys are simpler than smart keys, which might have chip protection. Before changing the battery, keep the key far away to prevent accidentally starting the car. Keeping a small toolkit at home and checking every six months can help avoid sudden power loss.
