The Next Big New Mazda Key Fob Replacement Industry How to Replace a Dead Mazda 5 Key Fob

Your Mazda 5 key fob is equipped with many great features. Some of them enhance safety or performance while others make driving in East Stroudsburg Brodheadsville and Saylorsville more efficient.

Remote start is one of the most convenient features. If you're having difficulty starting your vehicle it may be time to replace the battery on your key fob.

What is a keyfob?

A key fob is a remote control that lets you open and start your vehicle without the need to insert a metal key in the ignition. It is a small, light device that contains a microchip that stores information, such as an ID number that is unique and an antenna to transmit and receive signals. The microchip communicates with the receiver in your car via radio frequencies. These signals are a kind of near-field communication (NFC) that allows payments that are not made using contactless technology, as well as other features requiring proximity.

Depending on your key fob's model it will come with different capabilities. Certain systems, like, keep a record of who entered the building and when. This can be extremely beneficial in preventing crimes. There are also security measures that can be added, like encrypted keys that make it harder to clone them. Prox cards are very popular as fobs and are also known as 125khz, 26-bit or proximity cards.

You should always carry an extra car key fob in case your original is stolen or lost. It's easy and cost-effective to program a third keyfob by yourself. However, it is important to be aware that the procedure may differ from manufacturer to manufacturer and isn't always easy. You may have to do some research to find the proper instructions and steps. But, it's worth having a reliable key fob that can help you reach your destination without any hassle.

How do you open the keyfob

Nothing is more frustrating than pressing the unlock button on your Mazda key fob, only to find that it's not working. It doesn't matter if you're getting ready for your workday or returning home from an exciting afternoon at EAA Airventure, a dead key fob's battery can put a damper on your plans.

It's simple to change your key fob batteries at home by using a couple of simple tools. The service team at Holiday Mazda has put together this guide to help you to open the key fob, and then replace the battery.

Press the auxiliary button on the back of your key fob in order to remove the auxiliary piece of metal. After removing the auxiliary key, you will see an opening on the opposite side of the case. By using the tape-wrapped flathead screwdriver gently pry open the case. It should fall apart easily without damaging the rubber ring underneath which the battery sits.

After the battery is exposed, remove it and put it away somewhere that you will not forget it. Then, place the new battery in its place ensuring that the positive (+) side of the battery is facing up. After the battery is in place, close up the case making sure both sides snap into place. Then you can use your Mazda keyfob for the second time.

What is the battery in a key fob?

Button cells are the most commonly used type of battery that is used in key fobs. They are sold in many places including general stores, home improvement centers and auto parts stores. It is important to choose the correct size of battery for your keyfob. Different sizes of batteries have different discharge characteristics which could influence the way your keyfob works.

You can usually tell when the battery in your key fob has died by pressing the buttons and watching the LED light. If the LED light does not turn on it means the battery is dead. It needs to be replaced. You can also use a voltmeter on the battery to check its voltage. A fully charged key fob battery should read around 3 Volts. If the battery shows less than this, it is at a low level and needs to be replaced.


To replace the battery, first open your key fob. Find the notch that divides the two halves. You can use a screwdriver, a knife, or your finger to push into this notch and then wedge the two halves apart. Once the halves are separated and you have found screws that are tucked away on the back of the key fob, and take it off. Make sure you keep the screw in a safe place, like a resealable cup or bag in order to avoid losing it.

How to replace a key fob battery

A key fob is attached to the key ring. It has buttons that can be used to lock or unlock your car and even remotely start it (one of their many uses). The fob transmits wireless signals that allow the car to accomplish this. However, these signals are powered by battery power. If the battery goes out or is damaged, your Mazda will not be able to do anything at all and that could be a major disappointment. It's easy to replace the battery on the key fob.

The first step for opening the key fob is to push the screwdriver's tip into the seam where the two halves snap together. This seam usually has formed by a notch which makes it easier to tear the two halves apart.

After you have opened the case, remove the old battery by gently pulling on the key blade until it triggers a tab, and it pulls away from the case. Put the new CR2025 batteries into its place, ensuring that the plus side is facing upwards. Once mazda 2 battery key is installed, put the black cover piece back on and then slide the key blade back into place.

This is a quick and simple procedure that can be completed at home in Springfield but the steps will differ based upon your model year and key fob type. If you have any questions or concerns, the team at Eich Mazda is always here to help!