Mazda 3 Key Fob It's Not As Hard As You Think Mazda Key Fob Replacement

A key fob that does not work could mean that you don't have access to your car. A locksmith can easily and cheaply fix this issue.

It is not expensive to replace the battery in your Mazda keyfob. Your owner's manual should provide instructions, or you can find online videos on how you can do it yourself.

How do I open the door of a Mazda Key Fob

If your Mazda key fob has stopped working as well or the operation indicator light has stopped flashing, it may be time to replace the battery. Fortunately, this is one of the easiest repairs you can do at home with just a few basic tools.

The Mazda key fob utilizes a CR2025 battery which is available at most retail stores as well as websites that sell batteries. They are priced at about $4 for a set of four and are available in different sizes.

Open the Mazda key fob with a flathead screwdriver taped. Press the accessory button on the back of the fob to release the metal auxiliary keys and then use the screwdriver on both sides of the case to open the case. Make sure to work slowly to avoid damaging the case, and to keep the screwdriver's tip from getting scratched.


Once you've opened the key fob case, remove the battery. Make sure the rubber ring that the battery is affixed to is in good shape. Insert your new CR2025, ensuring that the positive side is facing you. Replace the case by re-covering the screwdriver. Then put everything back together according to your Mazda CX-5 owner's manual.

Battery Replacement

Mazda key fob batteries are simple to replace, but it is best to do so before the battery has completely died. This can cause the car's ability to start and unlock doors to be compromised. This can be dangerous particularly if you have children in the vehicle.

You'll need to locate the battery that 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 will be two ones: one red one with a mark (+) and a black one marked (-).

Use a taped flathead screwdriver first to open the case on one side and then the other. Do not push the case open or you could damage the internal components. Once the case is removed there is tiny rubber rings that the battery sits on. Be careful not to scratch this ring since the code number is stamped on it. Keep the code number in a safe place, not in the vehicle, to be used later if needed.

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

new mazda key G28CarKeys

In the majority of cases it's quite simple to replace the battery in a car key fob and you can do it at home without the need of a professional. Many experts suggest keeping an extra battery at home. They are available at most hardware shops. This will reduce the expense of purchasing a brand new fob, which could be priced at $250 or more for the cheapest cars, and $500 or more for the most expensive models.

However, if the key is stuck in the ignition, it may be a lot more difficult to take it out. Modern ignitions are complicated systems that require a sequence of movements to function correctly. If there is something that causes disruption to the process, for example a pin in the ignition that is damaged or a key that is broken, the ignition could be jammed and the key may be stuck.

If the ignition is damaged, you'll need it repaired or replaced. This is a challenging task that is dependent on the model and the make of your vehicle. Some dealerships will offer to do this, however it's generally more expensive than hiring an independent mechanic.

You'll have to pay a locksmith the programming of the new key, in addition to the cost to replace or rebuild the ignition. This is not possible to do at your 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. The key fob also has other features, for instance, opening the windows, summoning the vehicle if it is in a tight space and auto-parking. This is the reason they're so useful but they can be a pain when you lose or break one.

The good news is that a majority of modern key fobs are fairly simple to replace. You can generally do it yourself using a screwdriver, and you can buy a new one. Some key fobs sound a warning when their lifespan is approaching the expiration date. Experts suggest keeping an extra battery in the middle console or in the glove box, and small screwdrivers to open it in case you need to change the original one.

A locksmith may also give you an entirely new key. The locksmith might require a key that is working to program the new remote, so choose a locksmith who will require proof before beginning. You can also consider purchasing a brand new fob online from a reputable seller.

If you have a fob for your key that doesn't function, your insurance might cover it. This option will cost you a brand new key fob in addition to your car's deductible.