We have dedicated this website to help you solve the little problems you can face with your car . Today, we are going to take a look at a problem that may seem minor but that fairly quickly turns out to be annoying if it is not solved. Indeed, we are going to help you to know how to replace my Mercedes Classe C card battery? The advantage of cards is that they work hands-free, but with no power your card will be useless. That’s why, first, we will see how the card works, then how to replace the battery of the card of your Mercedes Classe C?, and, finally, which is the battery that corresponds to the card of your Mercedes Classe C.

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How does the key card of your Mercedes Classe C work?

Before we demonstrate how to replace the batteries in your Mercedes Classe C hands-free card, we will promptly describe how it works and the benefits it will offer 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 difficulty. With the advent of new wireless solutions, key problems will promptly become a thing of the past! We are going to show 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 communicate.
  • It allows you to open the Mercedes Classe C 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 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 Mercedes Classe C if you run out of battery power.

How do I replace the card battery of my Mercedes Classe C?

We will now go forward to the part that interests you the most in this document, how to replace the key card battery of an Mercedes Classe C? Effectively this wireless technology requires energy to work. When the batteries of your card are dead you will not be able to wireless open the doors of your motor vehicle, but with the help of the integrated physical key you can do it manually. 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 Mercedes Classe C:

  • Press the button at the bottom and pull out the emergency key at the same time.
  • 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 category of battery to buy for the card of my Mercedes Classe C?

    At last, to finish our article content we will help you to select the card battery type of your Mercedes Classe C. They all look very equivalent and it is not always easy to select the suitable one. It is a button size 3V Lithium CR battery, concerning the number of the battery according to the year of your Mercedes Classe C, it can be either the 2016, the 2032 or the 1620.

    If you wish more tutorials on the Mercedes Classe C, go to our Mercedes Classe C category.