How to replace the key battery of the Mazda3 Axela?
3 Answers
Steps to replace the key battery of the Mazda3 Axela: There is a small button on the back of the Mazda3 Axela's car key. Pressing this button allows you to remove the mechanical key. Then, you can use a prying tool to gently open the key casing along the seam, enabling you to replace the battery. The battery inside the car remote key typically lasts for 2 to 3 years. When the battery runs out, it needs to be replaced. If the battery is dead, the remote control will stop functioning. The Mazda3 Axela is equipped with two naturally aspirated engines: one is a 1.5-liter naturally aspirated engine, and the other is a 2.0-liter naturally aspirated engine. The 1.5-liter naturally aspirated engine has a maximum power of 86 kW and a maximum torque of 148 Nm, while the 2.0-liter naturally aspirated engine has a maximum power of 116 kW and a maximum torque of 202 Nm.
I've changed the key battery for my Mazda3 Axela a few times, and the process is quite straightforward, taking just a few minutes. The key battery is a common CR2032 coin cell, usually with a small slit or groove on the side of the key. Use a small flat-head screwdriver or a dedicated plastic pry tool to gently open the casing—avoid using too much force to prevent scratching the plastic. Once opened, you'll see the old battery. Use tweezers or a small stick to pry it out, paying attention to the battery's orientation to avoid reversing the polarity. Dispose of the old battery properly. Before inserting the new battery, check the positive-side marking and align it correctly with the slot, pressing it in until you hear a click, indicating it's securely in place. Then, snap the casing back together and press firmly. Finally, test the key's functions, such as remote locking or starting the car. If unsure about the battery model, you can purchase a spare at a 4S dealership—doing it yourself saves a few dozen yuan in labor costs. Typically, the battery lasts about two years, but cold weather can drain it faster, so regular checks can prevent sudden failures.
As a car owner, I once encountered a dead key fob battery and managed to replace it myself. Here's a simple guide. First, prepare a new CR2032 battery and a small tool like a screwdriver. Gently pry open the seam on the back of the key fob to slowly separate the casing, revealing the silver coin-cell battery inside. Carefully remove the old battery without damaging the circuitry. Install the new battery with the plus sign facing up, aligning it properly in the slot before pressing it flat. Then, snap the cover back into place and test if the remote lights up. The whole process takes less than five minutes, saving you a trip to the dealership. Since frequently used key fobs drain batteries faster, I check the power every two years—either with a multimeter or by observing remote responsiveness—and replace it preemptively to avoid issues. DIY is quite rewarding, and keeping tools in the car ensures you're always prepared.
