Mazda 3 Key Fob: 11 Things You've Forgotten To Do

· 4 min read
Mazda 3 Key Fob: 11 Things You've Forgotten To Do

Mazda Key Fob Replacement

If your key fob won't function, you might not be able access your vehicle. Fortunately, a locksmith can solve this issue quickly and inexpensively.

The battery inside your Mazda key fob is generally very affordable to replace. You can find the necessary instructions in your owner's manual, or online videos on how to do it.

How to open the Key Fob of a Mazda Key Fob

If you've noticed that your Mazda key fob isn't functioning with ease, or its operating indicator light is no blinking, you may require a new battery. Fortunately this is among the easiest services to perform at home with a few tools.

The Mazda key fob is powered by a CR2025 battery, which is sold in all retailers or on online platforms that sell batteries. They are priced at around $4 for a set of four, and are available in a variety of sizes.

You can make use of a tape-wrapped flathead screwdriver to open the Mazda key fob case. Press the button for the auxiliary key on the backside of the fob in order to remove the metal auxiliary key, then use your screwdriver to break the case on both sides. Take your time to avoid damaging to the case, and to protect the screwdriver's tip.

Remove the battery after you have opened the key fob. Make sure that the rubber ring the battery is mounted to is in good working order. Insert your new CR2025 and ensure that the positive side is facing you. Replace the case and re-cover the screwdriver. Then put all the components back together as described in the manual of your owner for your Mazda CX-5 or other model.

Battery Replacement

Mazda key fobs are easy to replace. However it is recommended to do it before the battery has gone out of service. This can cause the car's ability to start and unlock doors to be affected. This could be risky, especially if there are small children in your vehicle.

You'll need to locate the battery which is in the lower section of the key fob case. It is usually a little larger than a regular coin, and it has two terminals. There are two terminals: a red one marked (+) and one black one that is marked (-).

Make use of a tape-wrapped flathead screwdriver to pry open the case, first on one side and then on the other side. Be cautious not to force the case open or you could damage the internal components. The rubber ring where the battery is located once the case is removed. The ring has the code number printed on it. Keep the code number secure, and not in your car, in case you need it in the future.


Reassemble everything after you've changed the battery. Attach the case again and be sure to insert both sides of the case into the key fob until you hear it click.

Ignition Replacement

In general it's fairly simple to replace a car key fob battery, and you can do it at home without the need of the assistance of a professional. Many experts suggest keeping an extra battery in your home. You can get them from most hardware stores. This will help you avoid the cost of a replacement fob that can be up to $500 for the most expensive models and $250 for the cheapest cars.

If the key is stuck in the ignition, it will be more difficult to remove. Modern ignitions are intricate systems that require a series of movements to function properly. If something disrupts the process, like a damaged ignition lock pin or a damaged key, the ignition may stop working and the key may be trapped.

If the ignition is damaged, you'll have to get it replaced or rebuilt. This is a complex task, and it depends on the model of your car and the model. Some dealerships provide this service, however it's usually more expensive than hiring an independent mechanic.

In addition to the cost of the replacement or rebuilt ignition, you will need to pay for an locksmith to program your new key. This isn't possible to do at home unless you have an ignition system that is basic.

Key Blanks

The key fob is able to do more than just unlock the car and start it.  mazda replacement key cost  has additional features, like opening the windows, summoning the vehicle if it is in a tight space, and auto-parking. This is why they're so useful, but they can also be a bit frustrating if you have to replace or break one.

It's important to know that modern key fobs can be replaced easily. It's often possible to do it yourself using a screwdriver, a plier and a new battery. Some key fobs emit a warning when they're nearing the end of their usefulness. Experts suggest keeping an extra battery in your center console or in the glove box. Also, you should have an open-ended screwdriver for it if you need to swap out the old one.

Another option is to contact an locksmith who can create you a new key. They may require an active key from the vehicle to program the new device, so it's essential to find one who will require evidence of ownership or registration prior to they begin. Also, you could look to purchase a new fob online from a reputable seller.

Your insurance might cover a key fob if it fails to function. But, taking this route means you'll have to purchase a new fob and your car's deductible which could be costly when the fob is worth hundreds of dollars.