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 take a look at a problem that may seem minor but that fairly quickly turns out to be frustrating if it is not repaired. In truth, we are going to support you to know how to replace my Audi A4 card battery? The benefit of cards is that they work hands-free, but with no electricity your card will be ineffective. That’s why, first, we will see how the card works, then how to change the battery of the card of your Audi A4?, and, finally, which is the battery that corresponds to the card of your Audi A4.

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How does the key card of your Audi A4 operate?

Before we demonstrate how to change the batteries in your Audi A4 hands-free card, we will fairly quickly illustrate how it works and the benefits it will give you. Who hasn’t had difficulties locating their car keys in their bag or pocket? For a few years now, car makers have been looking into this issue. With the advent of new wireless solutions, key problems will fairly quickly become a thing of the history! We are going to show 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 Audi A4 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 enables to open and close like a centralized lock 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 Audi A4 if you run out of battery power.

How do I replace the card battery of my Audi A4?

We will now go forward to the part that interests you the most in this content, how to change the key card battery of an Audi A4? Effectively this wireless technology needs energy to operate. When the batteries of your card are flat 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 put 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 Audi A4:

  • Press the button at the bottom and pull out the emergency key concurrently.
  • 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 remove the flat battery from the card
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  • 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 Audi A4?

    Finally, to finish our article content we will support you to select the card battery type of your Audi A4. 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 Audi A4, it can be either the 2016, the 2032 or the 1620.

    To get more tips on the Audi A4, take a look at the Audi A4 category.