How to Remove the Key Battery for Mazda3 Axela?

[LeFelix]

To remove the key battery for Mazda3 Axela, follow these steps: 1. Locate a small switch on the back of the car key. 2. Press the small switch while pulling out the mechanical key from the top. 3. Use a flat object to pry open the gap on the side of the key to separate it. 4. Open the key cover and remove the black waterproof cover. 5. Take out the old battery and replace it with a new one, ensuring the side with the '+' sign faces up. 6. After installation, reattach the key cover and squeeze it gently from both sides. Additional related information: 1. The Mazda3 Axela key has three buttons: unlock, lock, and trunk open. Holding the lock button can close the windows after turning off the engine, pressing the lock button firmly will sound the horn, and holding the trunk button will automatically open the trunk. 2. Owners can remotely unlock and lock the doors without inserting the key into the lock. The main advantage is that, regardless of day or night, there's no need to locate the lock hole, allowing for convenient remote unlocking (opening) and locking (securing) of the doors.

[JamesLee]

I remember changing the battery for my Mazda3 key was quite simple when it ran out of power. First, locate the thin seam on the back cover of the key, then gently pry it open using a small coin or a tiny screwdriver. Don’t use too much force, or the key casing might break. Once opened, you’ll see the battery inside—usually a CR2032 coin-type battery. Just pop it out, insert the new battery in the same orientation, and make sure the positive and negative poles are correctly aligned; otherwise, the key won’t work. After installation, snap the cover back on and press firmly to secure it. Finally, test if the remote functions properly. The battery typically lasts one to two years, so I recommend keeping some high-quality spares on hand to avoid panic if it dies unexpectedly. Regularly check the battery condition to prevent last-minute failures. It’s cost-effective and hassle-free—just a few minutes to get it done.