We have dedicated this website to help you solve the little problems you can face with your car . In this article, we are going to take a look at a problem that may seem insignificant but that fairly quickly turns out to be annoying if it is not corrected. Indeed, we are going to support you to know how to replace my Mercedes Classe A card battery? The advantage of cards is that they work hands-free, but without 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?, and, at last, which is the battery that matches to the card of your Mercedes Classe A.
How does the key card of your Mercedes Classe A work?
Before we describe how to replace the batteries in your Mercedes Classe A hands-free card, we will fairly quickly describe how it works and the benefits it will offer you. Who hasn’t had difficulties finding their car keys in their bag or pocket? For a few years now, car producers have been looking into this issue. With the advent of new wireless systems, key problems will fairly quickly become a thing of the history! We are going to demonstrate 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 Mercedes Classe A 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
- There are two versions of key card, one that permits to open and close like a centralized locking mechanism 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 Mercedes Classe A if you run out of battery power.
.
How do I replace the card battery of my Mercedes Classe A?
We will in this part move on to the part that interests you the most in this content, how to replace the key card battery of an Mercedes Classe A? 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 manually. Relating to the ignition, all you have to do is put 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:
- Press the button at the bottom and pull out the emergency key while doing so.
- You will need to see a tab that will allow you to open the case of your card in half.
- Use a thin object to take out the flat battery from the card
- 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 kind of of battery to purchase for the card of my Mercedes Classe A?
Finally, to conclude our content page we will support you to select the card battery type of your Mercedes Classe A. They all look very identical and it is not always easy to select the right one. It is a button size 3V Lithium CR battery, concerning the number of the battery according to the year of your Mercedes Classe A, it can be either the 2016, the 2032 or the 1620.
If you wish more guides on the Mercedes Classe A, go to our Mercedes Classe A category.
