10 Things Everybody Hates About Mazda 3 Key Fob Mazda 3 Key Fob Mazda Key Fob Replacement

If your key fob does not function, you might not be able to access your vehicle. Thankfully, a locksmith can solve this issue quickly and cost-effectively.

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

How to Open a Mazda Key Fob

If you've noticed that your Mazda key fob isn't turning on in the same way, or that its operation indicator light is no longer flashing, you might require a new battery. This is among the easiest tasks you can do at home with just a few tools.

The Mazda key fob is powered by a CR2025, which can be found in most retail stores and online platforms that sell batteries. They are priced at around $4 for a pack of four, and are available in various sizes.

You can make use of a tape-wrapped flathead screwdriver open the Mazda key fob case. Press the accessory button on the back of the fob to release the auxiliary keys made of metal and then use the screwdrivers on both sides to remove the case. Make sure you work slowly to avoid damage to the case and also to avoid the screwdriver's tip from getting scratched.

Remove the battery after you have opened the key fob. Make sure the rubber ring the battery is affixed to is in good condition. Insert mazda keys replacement to ensure that the positive side faces you. Replace the case and cover the screwdriver, then put everything back together according to the instructions in your owner's manual for your Mazda CX-5 or other model.

Battery Replacement

Mazda key fob batteries are easy to replace, however it is best to do this before the battery is completely depleted. This can cause the car's ability of starting and open the doors to be compromised. This can be very risky especially if you have small children inside the vehicle.

You'll have to locate the battery which is in the lower part of the key fob case. It is usually slightly larger than a coin and comes with two terminals. There are two terminals coins: one marked with red (+) and a black one with a minus sign. (-).

Use a screwdriver that is taped first to open the case on one side, and then the other. Be careful not to force the case open or you may damage the internal components. The rubber ring where the battery is situated after the case is removed. Be careful not to scratch this ring as the code number is engraved on it. Keep the code number somewhere secure, not in your car in case you require it in the future.

Reassemble the case after changing the battery. 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 swap the car key fob batteries at home without the need for a professional. Many experts suggest keeping an extra battery at home. You can purchase them at most hardware stores. This will reduce the expense of purchasing a brand new fob that 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 may be more difficult to get it out. Most modern ignitions are highly complex systems and require a specific series of movements to function properly. If something causes a disruption to this process, such as broken keys or an ignition lock pin, the ignition could stop working and the key may get trapped inside.

If your ignition is damaged, you'll need to rebuild it or replaced. This is a difficult job, and will depend on the model of your car and the make. Some dealerships offer this service, but it's usually more expensive than hiring an independent mechanic.

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

Key Blanks

The key fob does more than just lock and start the car. It also includes features like sliding down the window and summoning the car when it's stuck in a tight spot, and auto-parking. They're extremely useful, but they can be very frustrating if you lose or damage one.

It's a good idea to know that most modern key fobs can be easily replaced. It's often possible to do it yourself using a screwdriver, a plier and a new battery. Certain key fobs will even sound warnings when they're getting close to the end of their lifespan. Experts suggest keeping an extra battery in your center console or in the glove box, and a small screwdriver to open it in case you need to change out the battery that's been in use for a while.


A locksmith can also give you a new key. This professional may require a key that is working to program the new remote, so you should locate one that requires proof prior to beginning. Additionally, you can look to purchase a new fob online through a reputable seller.

Your car insurance may cover a key fob in case it doesn't function. But, taking this route means you'll have to pay for a replacement fob and your car's deductible which could be costly if the fob costs hundreds of dollars.