Mazda 3 2018 Problems

Changing the battery in a current Mazda 3’s key fob is a simple job once you know the process. Start by locating the small button on the back of the key near the silver metal key ring lug, and depressing it. You can then tug the metal key ring lug out and pull the manual accessory key out of the key fob.

Take a flat-bladed screwdriver and twist it gently in the slots where the manual accessory key is located. This starts separating the two halves of the key fob, allowing you access to the battery, though you will need to run an old credit or gift card down each side of the key fob to fully separate the halves.

Once you have the case open you will see the thin, round Panasonic CR2025 battery which has a rubber weather-proofing cover. Once you’ve removed the old battery and switched the cover to your new battery, you can start reassembly by putting the new battery in the key shell, with the positive side facing up.

Snap the key fob halves back together, push the accessory key back in, and then test to make sure the keyless entry works on your car.

It is important to note that this guide is for the current fob-style key and the process will be different for earlier pop-out keys.

Since their introduction to Australia in 2003 Mazda's compact car, the Mazda3, has used a front-wheel-drive format. This continues a tradition from the prior 323 model, dating back to the early 1980s. Some people have been confused by the Mazda CX-3 and larger CX-5 SUVs, which are based off the Mazda2's sub-compact platform, and Mazda6 family car platform, respectively. The confusion stems from the fact the CX-3 and CX-5 look like tall 4WD off-road vehicles, which are often primarily rear wheel drive with part-time front wheel drive to make them four wheel drive. However, the Mazda3 passenger cars, including the high-performance turbocharged MPS model, have all been front-wheel-drive only.