We are used to accompanying you in the small problems that go with the use of your car. In this guide, we are going to check out a problem that may seem unimportant but that quickly turns out to be bothering if it is not solved. Indeed, we are going to help you to know how to replace my Mercedes Benz CLS Class card battery? The benefit 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 Mercedes Benz CLS Class?, and, at last, which is the battery that matches to the card of your Mercedes Benz CLS Class.

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How does the key card of your Mercedes Benz CLS Class function?

Before we explain how to change the batteries in your Mercedes Benz CLS Class hands-free card, we will promptly 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 manufacturers have been looking into this difficulty. With the advent of new wireless technologies, key problems will promptly become a thing of the history! We are going to demonstrate you the 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 motor vehicle and on the card so that both can connect.
  • It allows you to open the Mercedes Benz CLS Class simply by passing your hand in front of the door or by pulling the handle when the card is in close proximity to your car
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  • There are two types of key card, one that allows to open and close like a centralized lock with the help 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 Mercedes Benz CLS Class if you run out of battery power.

How do I change the card battery of my Mercedes Benz CLS Class?

We will now move on to the part that interests you the most in this article content, how to change the key card battery of an Mercedes Benz CLS Class? Effectively this wireless technology requires energy to function. When the batteries of your card are lifeless you will not be able to wireless open the doors of your motor vehicle, but with the help of the included physical key you can do it physically. Concerning the ignition, all you have to do is insert 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 Mercedes Benz CLS Class:

  • 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 slim object to take off the flat 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 immediately, on others you will have to press the button 4 times to reactivate it.
  • Which type of battery to purchase for the card of my Mercedes Benz CLS Class?

    Finally, to conclude our article content we will help you to choose the card battery type of your Mercedes Benz CLS Class. They all look very equivalent and it is not always easy to choose the right one. It is a button size 3V Lithium CR battery, relating to the number of the battery according to the year of your Mercedes Benz CLS Class, it can be either the 2016, the 2032 or the 1620.

    If you want more guides on the Mercedes Benz CLS Class, go to our Mercedes Benz CLS Class category.