10 Websites To Help You To Become An Expert In Mazda 3 Key Fob Mazda Key Fob Replacement

If your key fob does not function, you may not be able to get into your vehicle. Luckily, a locksmith is able to fix this problem easily and at a low cost.

It's not too expensive to replace the battery in your Mazda keyfob. You can locate the steps 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 turning on with ease, or its operating indicator light is no longer flashing, then you might require a replacement battery. This is one of the easiest tasks you can do at home using just a few tools.

The Mazda key fob utilizes a CR2025 battery, which you can find at most retail stores as well as websites selling batteries. The set of four costs approximately $4 and is available in a variety of sizes.

You can use a tape-wrapped flathead screwdriver to open the Mazda key fob case. Press the accessory key button on the back of the fob to remove the key made of metal. then use your screwdriver to break the case on both sides. Make sure to work slowly in order to avoid damaging the case as well as to prevent the screwdriver's tip from getting scratched.

After you've opened the key fob case take out the old battery. Make sure you carefully examine the rubber ring on which the battery is mounted to ensure that it is in good condition. Insert your new CR2025, ensuring that the positive side faces you. Replace the case, re-covering the screwdriver. Then, put everything back together according to the Mazda CX-5 owner's manual.

Battery Replacement

Mazda key fob batteries are easy to replace, however it is recommended to do it before the battery has completely died. In other words, it can cause the car to be unable to unlock doors and start the engine. This can be quite dangerous particularly if you have small children in the car.

You'll have to locate the battery, which is located in the lower portion of the key fob case. It's usually a bit larger than a regular coin, and has two terminals. There are two terminals the red one marked (+) and a black one. (-).

Use a tape-wrapped flathead screwdriver pry open the case, first on one side, then on the other side. Be cautious not to force the case open, or you could damage the internal components. When the case is removed you will see tiny rubber rings that the battery is placed on. Be mazda key cut not to damage this ring since the code number is printed on it. Keep the code number in a secure location and not in your vehicle, for later reference when needed.


Reassemble the case after changing the battery. Reattach the case and be sure to insert both sides of the case into the key fob until you hear it click.

Ignition Replacement

In the majority of cases it's quite simple to replace a car key fob battery and you can do it at home without having to call the assistance of a professional. In fact, a lot of experts recommend having an extra battery on hand, and you can find them in a variety of hardware stores. This will reduce the expense of replacing a fob which can be as high as $500 for luxury cars and $250 for the cheapest cars.

If the key is stuck in the ignition, it could be more difficult to remove. Modern ignitions are sophisticated systems that require a number of movements to work correctly. If there is something that causes disruption to the process, for example a damaged ignition lock pin or a broken key, the ignition can jam and the key may be trapped.

If your ignition is damaged, you'll have to repair it or replaced. This is a complex job that is dependent on the make and model of your car. Some dealerships offer to do this, but it's generally more expensive than going to an independent mechanic.

You'll have to pay a locksmith the programming of the new key in addition to the cost of replacing or rebuild the ignition. This isn't something you can do at home unless you have an ignition system that is basic.

Key Blanks

The key fob is able to do more than secure the car and then start it. It also comes with features like opening the windows or summoning the car if it's in a jam and auto-parking. They're extremely useful, but can also be frustrating when you lose or damage one.

It's good to know that most modern key fobs can be replaced easily. You can typically do it yourself with the screwdriver, and then an additional cell. Some key fobs sound warnings when their lifespan is nearing its end. Experts recommend keeping an extra battery in the middle console or glove box and small screwdrivers to remove it in case you have to swap out the original one.

A locksmith may also give you an entirely new key. The locksmith may require a functioning key to program the new remote, so you should choose a locksmith who will require proof prior to beginning. Additionally, you can try purchasing a new fob online through a reputable seller.

If you have an unusable key fob, it's possible that it won't function, your insurance may be able to cover it. However, this means you'll have to pay for a new fob and your car's deductible which could be costly when the fob is worth hundreds of dollars.