10 Things We All Love About Mazda 3 Key Fob Mazda Key Fob Replacement

If your key fob does not function, you might not be able access your car. Locksmiths can quickly and inexpensively solve this issue.

It's not too expensive to replace the battery in your Mazda keyfob. You can find the instructions in your owner's manual, or online videos on how to do it.

How do I open a Mazda Key Fob

If you've noticed that your Mazda key fob isn't functioning in the same way, or that its operational indicator light isn't blinking, you may need a replacement battery. This is among the easiest tasks to do at home using a few simple tools.

The Mazda key fob is powered by the CR2025 and is sold in all stores or on websites that sell batteries. They cost about $4 for a box of four, and are available in a variety of sizes.

Open the Mazda key fob by using the flathead screwdriver that is taped. Press the button for the auxiliary on the fob's backside to remove the metal auxiliary keys and then use the screwdrivers on both sides break the case. Make sure to work slowly so that you don't cause damage to the case, and to keep the screwdriver's tip from being scratched.

Remove the battery after you have opened the key fob. Be sure to carefully inspect the rubber ring on which the battery is positioned to make sure it's in good working order. Insert your new CR2025 and ensure that the positive side is facing you. Replace the case and cover the screwdriver. Then put all the components back together as described in the owner's manual of your Mazda CX-5 or other model.

Battery Replacement

Mazda key fob batteries are easy to replace, however it is best to do it before the battery has completely died. It can also cause the car's ability of starting and unlock doors to be impaired. This could be extremely dangerous especially if you've got small children in the car.

You'll have to locate the battery that is located in the lower section of the key fob case. It is usually slightly larger than a coin and has two terminals. There is an red one that is marked (+) and the black one is marked (-).

Make G28 Car Keys Solutions of a tape-wrapped flathead screwdriver pry open the case, first on one side and then on the other. Be careful not to open the case too much, or you could damage internal components. The rubber ring where the battery is located after the case has been removed. Be careful not to scratch this ring, as the code number is engraved on it. Keep the code number secure, and not in your car in case you require it in the future.

Once you've replaced your battery, put everything back together. Re-attach the case, and make sure to re-insert both sides of the key fob case until hearing them click into the correct position.

Ignition Replacement

It is possible to replace the car key fob batteries at home, without the need of an expert. In fact, a lot of experts recommend having an extra battery in the car and you can find them in a variety of hardware stores. This will cut down on the cost of a new fob, which can cost upwards of $250 for the most basic vehicles, and $500 or more for the most expensive models.

If the key is stuck in the ignition, it might be more difficult to remove. Modern ignitions are complex and require a specific sequence of actions to function properly. If there is something that disrupts the process, like an ignition lock pin that is broken or a damaged key, the ignition can jam and the key could be trapped.

If the ignition is damaged, then you will need to have it repaired or replaced. This is a complex job that depends on the model and the make of your vehicle. Some dealerships offer this service, however it's usually more expensive than hiring an independent mechanic.

In addition to the cost of a replacement or rebuilt ignition, you'll also require an locksmith to program your new key. It is not something you can do at home unless your car has an ignition system that is basic.

Key Blanks

The key fob can do more than just lock and start the car. It also comes with additional features, like opening the windows, summoning the vehicle if it's in a congested space, and auto-parking. This is why they're useful however they can be a bit frustrating if you have to replace or break one.


The good news is that a majority of modern key fobs are fairly simple to replace. You can often do it yourself using a screwdriver and an additional battery. Some key fobs also emit an alert when they're approaching the end of their lives. Experts recommend keeping an additional battery in the center console or in the glove box, and an open-ended screwdriver for it in the event that you need to replace the original one.

Another option is to call locksmiths who can make you a new key. These professionals might require a working key from the vehicle to program the new fob, so it is important to find a locksmith that requires evidence of ownership or registration before they begin. Additionally, you can look to purchase a new fob on the internet from a trusted seller.

If you have an unusable key fob, it's possible that it won't work, your car insurance may be able to cover it. However, going this route means that you'll need to pay for a replacement fob as well as your car's deductible which could be costly when the fob cost hundreds of dollars.