We have dedicated this website to help you solve the little problems you can face with your car . In this guide, we are going to see an issue that may seem minor but that rather quickly turns out to be frustrating if it is not fixed. In truth, we are going to help you to know how to replace my Mazda 3 card battery? The advantage of cards is that they work hands-free, but without power your card will be ineffective. That’s why, first, we will see how the card functions, then how to replace the battery of the card of your Mazda 3?, and, finally, which is the battery that matches to the card of your Mazda 3.

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How does the key card of your Mazda 3 operate?

Before we explain how to replace the batteries in your Mazda 3 hands-free card, we will quickly illustrate how it works and the benefits it will provide you. Who hasn’t had difficulties finding their car keys in their bag or pocket? For a few years now, car brands have been looking into this issue. With the advent of new wireless technologies, key problems will quickly become a thing of the history! We are going to present you the product features and operation of your car key card now:

  • It uses a wireless technology that emits a frequency of 433 MHz.
  • Receivers/transmitters are present on the car and on the card so that both can intercommunicate.
  • It permits you to open the Mazda 3 simply by passing your hand in front of the door or by pulling the handle when the card is next to your car
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  • There are two types of key card, one that permits to open and close like a centralized locking mechanism with the help of a press button, and the other one that allows to open without even touching the card.
  • There is a spare key in the card so that you can open the door and start your Mazda 3 if you run out of battery power.

How do I replace the card battery of my Mazda 3?

We will in this part go forward to the part that interests you the most in this content, how to replace the key card battery of an Mazda 3? Effectively this wireless technology requires energy to operate. When the batteries of your card are lifeless you will not be able to wireless open the doors of your car, but with the help of the integrated physical key you can do it physically. Concerning the ignition, all you have to do is insert the card in the slot provided for this purpose, even without a battery, it has a chip that allows your car to start. We now move on to the procedure for replacing the battery of the card in your Mazda 3:

  • Press the button at the bottom and pull out the emergency key concurrently.
  • You will need to see a tab that will allow you to open the case of your card in half.
  • Use a thin thing to take out the used battery from the card
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  • Put in the new battery in the slot provided.
  • Close the card.
  • On some models it will work automatically, on others you will have to press the button 4 times to reactivate it.
  • Which type of battery to buy for the card of my Mazda 3?

    At last, to finish our content page we will help you to choose the card battery type of your Mazda 3. They all look very similar and it is not always easy to choose the good one. It is a button size 3V Lithium CR battery, relating to the number of the battery according to the year of your Mazda 3, it can be either the 2016, the 2032 or the 1620.

    If you want more guides on the Mazda 3, go to our Mazda 3 category.