How to Replace the Battery in a Mazda Key?
2 Answers
Pull out the mechanical key, pry open the key, and after separating it, you can see the battery inside. After replacing the battery, reassemble the key. Below are the detailed steps for replacing the battery: 1. Pull out the mechanical key by directly pressing the key head and pulling it out. 2. Use a flat-head screwdriver to pry open the key along the seam of the key casing. Be careful to follow the seam all around to separate the front and back casings. 3. After separating, you will see the battery inside. There is a cover on the battery; after opening the cover, you can see the battery and the protective ring inside, allowing you to replace the battery. 4. After replacing the battery, reassemble the key.
I've changed the Mazda key battery several times myself and find it quite simple. There's usually a small groove on the back of the key where you can gently pry open the cover using a coin or thin tool. Inside is a button battery, most commonly the CR2025 or CR2032 model - make sure you don't buy the wrong one. When removing the old battery, be careful not to damage the contact points. When installing the new battery, pay attention to the polarity - usually the positive side faces up. After replacement, close the cover and press it firmly, then test the remote locking and unlocking functions to ensure everything works properly. I also recommend keeping a spare battery in your car for emergencies. Regular checks are important as batteries drain faster with prolonged use, especially in cold weather. Doing it yourself can save you quite a bit of money.
