The 10 Most Scariest Things About Mazda 3 Key Fob Mazda Key Fob Replacement

If your key fob isn't able to work, you might not be able get into your vehicle. A locksmith can easily and cheaply fix this issue.


The battery in your Mazda key fob is usually very affordable to replace. The owner's manual will provide instructions or videos online on how to do it yourself.

How to open the Key Fob of a Mazda Key Fob

If you've noticed that your Mazda key fob isn't functioning in the same way, or that its operation indicator light is no blinking, you may need a replacement battery. This is among the easiest things to complete at home using a few simple tools.

The Mazda key fob utilizes the CR2025 battery, which you can find in most stores and online platforms that sell batteries. The four-pack costs approximately $4 and is available in different sizes.

You can use a tape-wrapped flathead screwdriver open the Mazda key fob case. Press the accessory key button on the backside of the fob in order to remove the auxiliary metal key, then use the screwdriver to remove the case from both sides. Be sure to work slowly in order to avoid damaging the case and also to avoid the screwdriver's blade from getting scratched.

After you have opened the case of the key fob, take out the old battery. Make sure the rubber ring the battery is mounted to is in good condition. Insert your new CR2025 and ensure that the positive side is facing you. Replace the case and cover the screwdriver, then put everything back together according to the instructions 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 best to do it before the battery has died. This can cause the car's capability to start and unlock doors to be affected. This can be dangerous particularly if you have children who are in the vehicle.

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

Use a tape-wrapped flathead screwdriver pry open the case, first on one side, then on the other. Be cautious not to open the case too much, or you could damage internal components. After removing the case there is the small rubber ring the battery sits on. This ring has the code number printed on it. Place the code number in a secure location and not in the vehicle, to be used later should you need to.

Once you've replaced your battery and put it back together, you can put it back together. Reattach the case and make sure to insert both sides of the case into the key fob until you hear it click.

Ignition Replacement

It is possible to replace car key fob batteries at home without the need of an expert. Many experts recommend having an extra battery at home. They are available from most hardware stores. This will reduce the expense of replacing a fob, which can be up to $500 for high-end models and $250 for most affordable cars.

If the key is stuck in the ignition, it might be more difficult to get it out. Modern ignitions are sophisticated systems that require a series of movements to work correctly. If there is something that disrupts the process, like a broken ignition lock pin or a damaged key, the ignition could be jammed and the key may be trapped.

If your ignition is damaged, you will need it to be rebuilt or replaced. This is a difficult task which is dependent on the type and brand of your vehicle. Some dealerships will do this, but it is typically more expensive than hiring an independent mechanic.

In addition to the cost of replacing or rebuilt ignition, you will also require a locksmith to program the new key. If your car does not have a basic ignition system this is not possible to do at home.

Key Blanks

The key fob can do more than just lock and start the car. The key fob has additional features, like opening the windows or summoning the vehicle when it's in a tight space and also auto-parking. This is why they're useful, but they can also be frustrating when you lose or break one.

The good news is that most modern key fobs are simple to replace. You can usually do it yourself using the screwdriver, and then an additional cell. Some key fobs emit an alert when their life span is approaching the end. Experts recommend keeping an additional battery in the center console or in the glove box. Also, you should have an open-ended screwdriver for it if you need to replace the original one.

A locksmith can also create you an entirely new key. The locksmith might require a working key in order to program the new remote, so you should find one that asks for proof before beginning. mazda 2 spare key can also try to buy a new fob online through a reputable seller.

Your insurance policy may cover a key fob if it's not working. This route will cost you a brand new key fob, as well as the deductible of your car.