We are used to accompanying you in the small problems that go with the use of your car. In the present day, we are going to see a concern that may seem unimportant but that quickly turns out to be bothering if it is not repaired. Indeed, we are going to support you to know how to replace my Mercury Mariner card battery? The advantage of cards is that they work hands-free, but with no electricity your card will be useless. That’s why, first, we will see how the card works, then how to change the battery of the card of your Mercury Mariner?, and, finally, which is the battery that matches to the card of your Mercury Mariner.

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How does the key card of your Mercury Mariner function?

Before we teach you how to change the batteries in your Mercury Mariner hands-free card, we will quickly illustrate how it works and the benefits it will give you. Who hasn’t had problems finding their car keys in their bag or pocket? For a few years now, car suppliers have been looking into this trouble. With the advent of new wireless technologies, key problems will quickly become a thing of the past! We are going to reveal 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 communicate.
  • It permits you to open the Mercury Mariner simply by passing your hand in front of the door or by pulling the handle when the card is near 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 support of a 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 Mercury Mariner if you run out of battery power.

How do I replace the card battery of my Mercury Mariner?

We will in this part go forward to the part that interests you the most in this article content, how to change the key card battery of an Mercury Mariner? Effectively this wireless technology needs energy to function. When the batteries of your card are flat you will not be able to wireless open the doors of your car, but with the help of the included physical key you can do it by hand. Regarding the ignition, all you have to do is put the card in the slot included 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 Mercury Mariner:

  • Press the button at the bottom and pull out the emergency key simultaneously.
  • You will need to see a tab that will allow you to open the case of your card in half.
  • Use a slim object to take out the used battery from the card
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  • Install the new battery in the slot provided.
  • Close the card.
  • On some models it will work instantly, 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 Mercury Mariner?

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

    If you want more guides on the Mercury Mariner, go to our Mercury Mariner category.