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 look at a concern that may seem minor but that quickly turns out to be frustrating if it is not fixed. In fact, we are going to support you to know how to replace my Mercedes Classe A 3 card battery? The advantage of cards is that they work hands-free, but with no 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 Mercedes Classe A 3?, and, finally, which is the battery that matches to the card of your Mercedes Classe A 3.
How does the key card of your Mercedes Classe A 3 function?
Before we teach you how to replace the batteries in your Mercedes Classe A 3 hands-free card, we will fairly quickly 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 fairly quickly become a thing of the history! 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 motor vehicle and on the card so that both can connect.
- It permits you to open the Mercedes Classe A 3 simply by passing your hand in front of the door or by pulling the handle when the card is near your car
- There are two versions 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 Mercedes Classe A 3 if you run out of battery power.
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How do I change the card battery of my Mercedes Classe A 3?
We will in this part go forward to the part that interests you the most in this document, how to replace the key card battery of an Mercedes Classe A 3? 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 motor vehicle, but with the help of the included 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 A 3:
- 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 thing to take off the flat battery from the card
- 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.
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Which kind of of battery to buy for the card of my Mercedes Classe A 3?
At last, to end our content page we will support you to choose the card battery type of your Mercedes Classe A 3. They all look very similar 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 Classe A 3, it can be either the 2016, the 2032 or the 1620.
To get more tips on the Mercedes Classe A 3, take a look at the Mercedes Classe A 3 category.
