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 an issue that may seem unimportant but that rather quickly turns out to be bothering if it is not repaired. In fact, we are going to help you to know how to replace my Mercedes A class card battery? The benefit 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 works, then how to replace the battery of the card of your Mercedes A class?, and, finally, which is the battery that corresponds to the card of your Mercedes A class.
How does the key card of your Mercedes A class function?
Before we teach you how to replace the batteries in your Mercedes A class hands-free card, we will fairly quickly summarize 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 brands have been looking into this issue. With the advent of new wireless technologies, key problems will fairly quickly become a thing of the past! 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 car and on the card so that both can intercommunicate.
- It enables you to open the Mercedes A class simply by passing your hand in front of the door or by pulling the handle when the card is close to your car
- There are two types of key card, one that enables 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 A class if you run out of battery power.
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How do I replace the card battery of my Mercedes A class?
We will now go forward to the part that interests you the most in this content, how to replace the key card battery of an Mercedes A class? Effectively this wireless technology needs energy to function. When the batteries of your card are dead 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 physically. Concerning 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 A class:
- 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
- Put in the new battery in the slot provided.
- Close the card.
- On some models it will work automatically, on others you will have to press the button 4 times to reactivate it.
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Which category of battery to use for the card of my Mercedes A class?
Finally, to conclude our article content we will help you to choose the card battery type of your Mercedes A class. 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, concerning the number of the battery according to the year of your Mercedes A class, it can be either the 2016, the 2032 or the 1620.
In the event that you have any further questions about the Mercedes A class, do not hesitate to consult our Mercedes A class category.
