We are used to accompanying you in the small problems that go with the use of your car. In this article, we are going to see a problem that may seem insignificant but that promptly turns out to be annoying if it is not repaired. Indeed, we are going to support you to know how to replace my smart fortwo card battery? The advantage of cards is that they work hands-free, but without power your card will be useless. That’s why, first, we will see how the card functions, then how to replace the battery of the card of your smart fortwo?, and, at last, which is the battery that matches to the card of your smart fortwo.

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How does the key card of your smart fortwo work?

Before we teach you how to replace the batteries in your smart fortwo hands-free card, we will promptly explain how it works and the benefits it will give you. Who hasn’t had difficulty finding their car keys in their bag or pocket? For a few years now, car manufacturers have been looking into this problem. With the advent of new wireless technologies, key problems will promptly become a thing of the history! 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 car and on the card so that both can intercommunicate.
  • It allows you to open the smart fortwo simply by passing your hand in front of the door or by pulling the handle when the card is close 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 support 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 smart fortwo if you run out of battery power.

How do I replace the card battery of my smart fortwo?

We will in this part move on to the part that interests you the most in this article, how to replace the key card battery of an smart fortwo? Effectively this wireless technology needs energy to work. 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 included physical key you can do it by hand. 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 smart fortwo:

  • 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 remove 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 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 smart fortwo?

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

    If you need more tutorials on the smart fortwo, go to our smart fortwo category.